As a new-type foreign trade service provider driven by both technology transformation and foreign trade services, HiSiaddi has established a "1+2+3+4=1" service system and can supply Antioxidant 1098 sourced directly from multiple well-known original manufacturers. As a research & development-oriented foreign trade service provider, HiSiaddi will professionally sort out and analyze common difficulties encountered by B2B buyers purchasing Antioxidant 1098 from China, as well as corresponding solutions provided by HiSiaddi.

If you require more professional and in-depth analysis regarding Antioxidant 1098 selection, please contact HiSiaddi customer service.

I. European & American High-End Nylon Engineering Plastic & Automotive Modified Plastic Manufacturers (Automotive Structural Parts, Engine Peripheral Components, Nylon Cable Ties, Glass Fiber Reinforced Plastic Products)

(I) Core Pain Points: Insufficient Purity, Excessive Volatiles, Poor Thermal Stability Leading to Thermal-Oxidative Aging Failure, Die Buildup and Blooming of Finished Products

1.

Low main content and excessive residual intermediate substances lead to insufficient long-term anti-aging capacity High-temperature nylon modification and glass fiber reinforced nylon production & service temperatures reach 180~230°C. Low-purity 1098 contains unreacted raw materials and byproducts, unable to form a stable antioxidant system. Component parts installed in high-temperature engine compartments suffer rapid yellowing, brittleness and sharp drop in mechanical strength within a short period, failing European and American automotive component thermal aging durability tests.

2.

3.

Excessive high-temperature volatiles generate smoke during extrusion granulation and injection molding with severe die buildup Excess volatile content in raw materials continuously volatilizes under high-temperature screw shear, creating heavy workshop smoke and poor operating conditions on one hand; on the other hand, volatiles continuously deposit on die heads and flow channels, requiring frequent production line shutdowns for disassembly and cleaning, drastically reducing continuous production efficiency. Meanwhile, finished product surfaces develop pits and haze, raising defective appearance rates.

4.

5.

High free small molecule content causes blooming on finished product surfaces, impairing assembly and appearance Small impurity molecules feature poor migration resistance. After long-term heating and stress application to nylon products, additives gradually migrate to surfaces forming white blooming layers. This not only results in unqualified appearance but also reduces friction and adhesion between components and rubber parts, leading to assembly slippage and loose assemblies.

6.

7.

Excessive moisture and ash content generate internal bubbles and reduce impact strength of finished products Excess water in raw materials vaporizes during high-temperature melting, forming tiny internal bubbles in injection-molded parts that fracture easily under stress starting from bubble locations. Excessive inorganic ash disrupts bonding interfaces between nylon resin molecular chains and glass fibers, drastically reducing finished product toughness and impact resistance, failing safety requirements for structural components.

8.

9.

Unstable melting point and uneven particle size cause poor mixing dispersion and obvious batch performance differences Unstable melting points lead to inconsistent melting timing of additives inside barrels; coarse, agglomerated powder/pellets mix unevenly with nylon pellets, glass fibers and other additives. Under identical formulas, anti-aging performance, hardness and toughness deviations between batches exceed standards, triggering out-of-control mass product quality.

10.

11.

Weak thermal storage stability leads to powder discoloration and activity attenuation after warehousing Conventional grades darken in color and lose antioxidant activity after long-term storage or ocean shipping heat exposure. When put into production, protective effects are greatly weakened, causing premature aging failure of finished products.

12.

(II) Targeted Solutions

1. Adopt multi-stage recrystallization + negative pressure purification processes to stabilize main content standards, thoroughly remove synthetic intermediates and byproducts, long-term suppress nylon thermal-oxidative aging under high-temperature working conditions, and enable finished products to pass automotive industry high-low temperature and thermal aging durability tests.

2. High-temperature vacuum devolatilization treatment strictly controls volatile indicators, eliminating obvious smoke during extrusion and injection molding, reducing die head and flow channel buildup, cutting shutdown cleaning frequency and supporting full-load production line operation.

3. Fine refining removes free small molecular substances to strengthen migration resistance, ensuring finished products remain blooming-free and precipitation-free after long-term service with stable assembly and performance.

4. Low-temperature vacuum drying tightly controls moisture, while high-temperature incineration purification reduces ash content, completely eliminating internal bubbles in finished products and guaranteeing bonding strength between nylon and glass fibers for superior finished product impact and fracture resistance.

5. Precisely temperature-controlled crystallization paired with airflow crushing and classified screening delivers narrow melting range, evenly distributed particle size without agglomeration, thorough mixing and dispersion with all materials, and highly consistent batch product performance.

6. Compound dedicated thermal stabilizers paired with light-proof moisture-proof sealed packaging maintain consistent color and antioxidant activity under normal temperature and shipping high-temperature storage conditions for stable warehouse quality.

II. European & American Wire & Cable & Insulation Sheath Manufacturers (High-Voltage Cable Insulation Layers, Cable Sheaths, Photovoltaic Cables, Locomotive Cables)

(I) Core Pain Points: Poor Hydrolysis Resistance, Low Light Transmittance, Insufficient Extraction Resistance Leading to Declined Insulation Performance, Aging Cracking and Sheath Powdering

1.

Weak hydrolysis resistance causes antioxidant loss and rapid insulation layer aging Cables are long-term buried underground or laid outdoors with high ambient humidity. Low-grade 1098 features poor hydrolysis resistance and gradually precipitates and leaches from resin systems under water vapor erosion. Cable insulation layers lose protective capacity, hardening and cracking within a short timeframe with continuous decline in insulation resistance, creating potential electric leakage safety hazards.

2.

3.

Substandard light transmittance impairs cable sheath appearance and weather resistance Most cable sheaths adopt light-colored and color-matched formulas. Raw materials with poor light transmittance produce dark, turbid color after compounding, accelerating yellowing and chalking during outdoor use and failing appearance acceptance standards, alongside simultaneous decline in UV aging resistance.

4.

5.

Insufficient extraction resistance leads to additive loss after contact with oil and rainwater and premature sheath powdering Outdoor and locomotive cables frequently contact engine oil and rainwater. Conventional grade antioxidants are easily extracted by media, gradually causing sheath powdering and peeling, failure of protective layers and drastically shortened cable service life.

6.

7.

Poor powder fluidity causes bridging and uneven feeding in automatic batching systems Most cable manufacturers adopt fully automatic weight-loss batching systems. Poor powder fluidity triggers material bin bridging and feed interruption, generating dosage deviations of additives across batches, inconsistent anti-aging performance along cable lengths and uneven quality of full cable rolls.

8.

9.

Poor compatibility with thioether and phosphite auxiliary antioxidants invalidates synergistic protective effects Polar impurities in raw materials trigger antagonistic reactions with commonly used auxiliary antioxidants, breaking synergistic effects of compound systems and drastically weakening overall anti-oxidation and anti-UV capacity, failing long service life requirements for cables.

10.

(II) Targeted Solutions

1. Molecular purification modification improves hydrolysis resistance, preventing precipitation and leaching under high humidity and buried conditions to maintain long-term cable insulation layer stability and eliminate insulation degradation and cracking issues.

2. Strictly control raw material light transmittance indicators with pure white powder color for uniform, bright sheath color after compounding, outstanding anti-UV and weather resistance and resistance to yellowing and chalking during long-term outdoor service.

3. High-molecular-weight stable molecular structure strengthens extraction resistance, preventing additive leaching after contact with oil and rainwater, avoiding sheath surface powdering and peeling and extending overall cable service cycles.

4. Powder surface fluidity modification enables smooth bin feeding without bridging, precise automatic batching metering and uniform stable performance across full cable lengths.

5. Deep removal of polar interfering impurities enables perfect compatibility with all mainstream auxiliary antioxidants to maximize synergistic effects of compound systems and superior comprehensive protective performance.

III. European & American Textile Fiber & Film Product Manufacturers (Industrial Polyester Filaments, Nylon Elastic Yarns, Food Packaging Films, Agricultural Weather-Resistant Films)

(I) Core Pain Points: Excessive Impurities, Strong Odor, Unbalanced Thermal-Oxidative Protection Leading to Yarn Breakage, Film Pinholes and Failed Food-Grade Compliance

1.

Mechanical impurities and black specks block spinnerets during spinning and film blowing, generating finished product defects Solid foreign particles and coke particles mixed into raw materials block spinnerets during spinning, causing yarn breakage and uneven yarn thickness; pinholes and dot protrusions form during film blowing, damaging film sealing and mechanical performance and drastically reducing yield rates.

2.

3.

Residual solvent and low-molecular impurities generate strong odor, exceeding odor standards for food packaging films Food-contact films impose strict odor requirements. Volatile substances remaining in raw materials migrate into packaged contents causing abnormal odor, failing European and American FDA and food-contact material testing standards.

4.

5.

Weak short-term antioxidant capacity triggers premature thermal degradation of resins during fiber and film processing Spinning and film blowing operate at elevated processing temperatures. Insufficient antioxidant activity causes degradation of resin molecular chains during processing, reducing fiber strength and increasing breakage risk, while film stretchability declines with higher tearing tendency.

6.

7.

Unbalanced photo-oxidative aging resistance causes rapid aging and damage of agricultural films during outdoor use Impurities disrupt photo-oxidative stabilization systems. After exposure to sunlight and rain, agricultural films embrittle and crack rapidly within a short period, failing weather resistance lifespan standards.

8.

(II) Targeted Solutions

1. Multiple precision filtration procedures added at the end of production completely remove mechanical impurities and coke particles, preventing spinneret blockage during spinning and film blowing and delivering clean, defect-free finished product surfaces.

2. Multi-stage solvent removal and deodorization processes eliminate residual solvents and volatile impurities for low-odor raw materials fully compliant with European and American food-contact regulatory standards for food packaging applications.

3. Optimized matching of antioxidant activity balances processing thermal stability and long-term post-production protection, effectively inhibiting resin degradation during processing and stabilizing fiber and film mechanical performance.

4. Purification optimizes photo-oxidative aging resistance paired with weather-resistant systems to extend outdoor service cycles of agricultural films and significantly improve anti-embrittlement and anti-damage performance.

IV. Indian & Southeast Asian General Modified Plastic & Low-End Cable Processing Plants (Conventional Engineering Plastics, Civil Cables, Daily Plastic Parts, Cost-Oriented Purchasing)

(I) Core Pain Points: Widespread Adulteration, Volatile Indicators, Deterioration During Storage & Transportation, Incomplete Compliance Leading to High Production Costs and Frequent Customer Complaints

1.

Low-priced products heavily adulterated with inert fillers with insufficient active ingredients rendering basic anti-aging performance ineffective High procurement costs for pure high-purity Antioxidant 1098 lead low-end suppliers to adulterate products with talcum powder, calcium carbonate and other fillers, drastically reducing effective content. Plastic parts and civil cables suffer rapid yellowing, cracking and aging failure after short service, triggering mass terminal returns and complaints.

2.

3.

Severe batch fluctuations in melting point, moisture, volatile content require repeated process adjustments during production Lack of standardized quality control generates obvious performance differences across raw material batches. Workers must repeatedly adjust processing temperatures, screw speeds and additive dosage ratios, requiring frequent equipment start-stop debugging, reducing production efficiency by over 20% and raising reject rates.

4.

5.

High-temperature high-humidity storage & shipping environments cause moisture absorption and caking, blocking batching and feeding equipment High temperatures and humidity during local ocean shipping and warehousing paired with inadequate ordinary packaging protection trigger rapid moisture absorption and agglomeration of powder, blocking hoppers and automatic feeding ports, halting production lines, delaying construction periods and causing material losses.

6.

7.

Incomplete compliance documents prevent local filing and sampling inspections, restricting distribution to informal channels Missing English COA, MSDS, heavy metal, REACH and food-contact test reports create detention risks during market regulatory inspections, with no guarantee of payment recovery.

8.

9.

Absence of supporting technical support hinders troubleshooting for yellowing, blooming and yarn breakage, exacerbating raw material waste Suppliers only provide goods without process guidance. Factories blindly adjust formulas amid production abnormalities, drastically increasing overall resin and additive consumption losses.

10.

(II) Targeted Solutions

1. Launch regional exclusive economical grades retaining core anti-aging and anti-precipitation performance by simplifying deep purification procedures for high-end food grades, with selling prices 20%~24% lower than high-purity grades to balance procurement costs and service demands without intentional adulteration of any kind.

2. Standardize and lock core indicators including melting point, moisture and volatile content for stable batch performance, enabling customers to fix production processes and formulas, reducing machine adjustment frequency and boosting production efficiency.

3. Double-layer moisture-proof sealed packaging with inner film plus woven bags mixed with environmentally friendly anti-caking additives adapts to high-temperature high-humidity environments, preventing powder moisture absorption and agglomeration for smooth feeding equipment operation.

4. Free complete set of English compliance documents provided per batch to assist customers with local filing and sampling inspections, opening formal sales channels and avoiding cargo detention risks.

5. Provide basic English process guidance with adjustment solutions for common issues including finished product yellowing, blooming, yarn breakage and die buildup to effectively reduce all types of raw material losses.

V. Overseas Chemical Packaging & Rubber & Plastic Additive Distributors (Regional Repackaging, Small Packaging, Supporting Supply of Plastic/Cable Additives)

(I) Core Pain Points: Adulteration & Filling, Damaged Packaging, Missing Qualifications, Storage Deterioration Damaging Channel Reputation and Causing Customer Churn

1.

Widespread adulteration and filling with falsely labeled main content and melting point triggering mass after-sales compensation claims Unscrupulous merchants adulterate Antioxidant 1098 with cheap fillers and falsely label all core indicators. After downstream factory use, mass finished product aging failure and substandard performance occur, forcing distributors to bear high compensation costs, losing long-term cooperative customers and damaging channel credibility permanently.

2.

3.

Insufficient packaging strength causes bag breakage and powder leakage during ocean shipping extrusion and bumping, triggering logistics disputes Thin, weakly sealed ordinary packaging materials easily tear and leak powder after container stacking and long-distance transportation, causing material losses, contaminating co-loaded goods and generating logistics deductions and compensation disputes.

4.

5.

Lack of light-proof moisture-proof protection leads to moisture absorption, discoloration and activity attenuation after long-term storage Antioxidant 1098 oxidizes, discolors and gradually loses activity under light exposure and moisture absorption; simple packaging fails to provide protective effects. Goods are rejected in full batches when supplied to high-end end customers due to substandard appearance and performance.

6.

7.

Missing environmental protection and dangerous goods documentation blocks access to European and American high-end supply chains Missing updated English SDS, marine dangerous goods identification certificates, REACH/RoHS and third-party test reports prevent passing supplier audits by large European and American plastic and cable manufacturers, limiting distribution to low-end markets with narrow profit margins.

8.

9.

Open repackaging introduces impurities and water vapor triggering continuous quality decline of small packages Repackaging operations without closed, dust-proof and moisture-proof facilities expose powder to air and water vapor, raising moisture and ash content and reducing antioxidant activity, leading to declining repeat purchase rates from end customers.

10.

(II) Targeted Solutions

1. Direct supply of original factory pure powder with zero fillers and zero adulteration, truthful labeling of all physical & chemical indicators; full international third-party complete test reports provided per batch supporting global re-inspection, eliminating quality compensation risks from the source and stabilizing channel reputation.

2. Custom thickened composite moisture-proof packaging bags with heat-sealed reinforced closures, with compressive and leak-proof testing of all bags before factory delivery to eliminate goods loss and logistics disputes via ocean shipping without bag breakage or powder leakage.

3. Combined light-proof inner film plus outer moisture-proof packaging paired with warehouse maintenance recommendations maintains consistent powder color and antioxidant activity without moisture absorption or discoloration during long-term storage, enabling smooth passing of high-end customer incoming inspection.

4. One-stop provision of complete formal English documentation including SDS, dangerous goods certificates and all environmental compliance test reports to fully connect European and American high-end rubber & plastic supply chains.

5. Establish full-link traceability systems covering production, quality inspection, packaging, warehousing and transportation with fully traceable batch information to fully cooperate with customer factory audits and supplier reviews; meanwhile provide standardized closed, dust-proof and moisture-proof repackaging specifications to guarantee consistent quality of large and small packaged products.

If you require more professional and in-depth analysis regarding Antioxidant 1098 selection, please contact HiSiaddi customer service.

Lead time

The monthly inventory volume of An 1098 is 10 tons, with appropriate adjustments upwards or downwards in response to peak and off-peak seasons.

HiSiaddi safeguards the supply stability of An 1098 through the following measures:

1. Supply of one mainstream An 1098 model by 3 premium factories

(1) Performance evaluation and screening of An 1098 brand factories based on on-time delivery rate, batch pass rate, timeliness of risk alerts, and completeness of documentation to assess their supply stability.

(2) For each mainstream model or major grade of An 1098, secure 1 primary high-quality brand manufacturer and 2 backup high-quality manufacturers.

(3) Each factory operates independent production lines in separate production zones to prevent production halts caused by major unforeseen incidents such as environmental production suspensions and power outages.

2. Technological transformation partnerships and long-term sales binding for An 1098

Through long-term cooperation with brand manufacturers via technology commercialization and authorized distribution channels, HiSiaddi can effectively strengthen supervision over the production processes of brand manufacturers, optimize full-process traceability management, improve batch stability control, and further reinforce real-time monitoring of the supply stability of An 1098 products.

Long-term Annual Framework Supply Guarantee Agreement. HiSiaddi signs 12-month long-term agreements with leading manufacturers. The agreements specify the minimum guaranteed supply volume, maximum price hike range, and priority production scheduling rights during peak seasons. It is stipulated that manufacturers shall issue a 30-day prior written notice if production is suspended due to environmental rectification or equipment maintenance, and backup manufacturers will be activated to replenish goods accordingly.

3. 4 warehouses and 10 peak & off-peak demand forecasting

We have 4 warehouses, which are jointly operated and managed with suppliers to store hot-selling products.The four warehouses are located at Qingdao Port in North China, Ningbo Port in East China, Shenzhen Port in South China, and Zhengzhou, China’s inland logistics hub. This setup guarantees sufficient supply and timely shipment of An 1098 during peak seasons.

HiSiaddi issues a rolling demand forecast covering the subsequent three months on the 25th of each month, allowing manufacturers to reserve production capacity in accordance with the forecast. Any new urgent orders from overseas clients will be prioritized to draw on inventories or production capacity from backup manufacturers.

4. Multi-channel logistics to resolve vessel congestion and inspection delays for An 1098 sea and land shipments

Unstable logistics for An 1098 will extend delivery lead times. HiSiaddi has established alternative arrangements covering multiple freight forwarders, ports and transportation solutions:

(1) Binding of multiple professional chemical freight forwarders for An 1098

Each product is assigned 2 to 3 freight forwarders with hazardous chemical/food transport qualifications affiliated with different shipping lines. Alternative sailing schedules can be switched to immediately in case of space shortages or customs inspections on a single shipping route.

(2) Backup transportation solutions for An 1098

Ocean freight serves as the standard mode; air freight and rail freight are reserved as alternatives for urgent orders. Long-term agreements for temperature-controlled containers are signed for temperature-sensitive and perishable food additives to secure shipping space.

(3) Visual tracking and digital early warning for An 1098

Freight forwarders synchronize daily updates on container loading, customs declaration, vessel loading and port arrival milestones. If customs inspection occurs, replenishment from backup inventory will be initiated immediately to shorten client waiting periods.

Full-chain digital early warning automatically monitors four categories of risks:

• Factory side: Expiring supplier environmental assessment certificates, renewal of production permits, scheduled major equipment overhauls, and notifications of price hikes for upstream raw materials;

• Inventory side: Inventory falling below safety thresholds, excessive inventory age, and batches failing quality inspection;

• Logistics side: Shipping line space shortages, strikes at destination ports, and updates to customs policies;

• Overseas side: Revisions to additive regulations and adjustments to import restriction lists in target countries.

Early warning notifications are automatically pushed to procurement and business leads, allowing backup suppliers or inventory contingency plans to be activated in advance.

Antioxidant 1098: What Qualification Certifications Have China’s Top Brands Obtained? What Is Their Market Feedback?

As a new-type foreign trade service provider driven by dual engines of technology transformation and foreign trade export, HiSiaddi has built a "1+2+3+4=1" service system, capable of supplying Antioxidant 1098 sourced directly from multiple well-known original manufacturers.

With inherent R&D capabilities, HiSiaddi differs from single-brand manufacturers that only promote their own products. We provide objective analysis of multiple Chinese brands with strong global export competitiveness, sharing their certification portfolios and market feedback to streamline buyers’ supplier selection processes.

For more authentic, objective information on multiple leading Chinese Antioxidant 1098 brands, please contact HiSiaddi customer service.

I. Rianlon – Global Leading Antioxidant Manufacturer, Top Recognition in High-End Markets

Main Grades: RIANOX® 1098 (Standard Grade), RIANOX® 1098-H (High-Purity / Low Metal Ion Grade)

Positive Market Feedback

· Automotive engineering plastics: Top 15 global automotive modified material manufacturers (including BASF and LANXESS Asia facilities) maintain long-term stable procurement. Customers praise its optimal compatibility with PA6/PA66, zero migration during high-temperature extrusion, and post long-term thermal aging color difference ΔE<0.3, outperforming generic domestic Antioxidant 1098 variants.

· Photovoltaic & electronics sectors: Head photovoltaic POE encapsulant film manufacturers verified its volatile content ≤0.3% and zero yellowing after 25 years of outdoor aging. Electronic-grade 1098-H features metal ion (Na/K/Ca/Fe) residues ≤5ppm and has entered the insulation material supply chains of Samsung and LG Electronics.

· International customer repeat purchase rate: 92%+ for high-end European, American, Japanese and Korean clients, recognized as the preferred domestic direct replacement for BASF Irganox 1098 at a 15–20% price discount versus imports.

Authorized, Verifiable Certifications

· EU: Full REACH registration, FDA 21 CFR 178.2010 food contact certification, IATF 16949 automotive quality system certification

· Domestic: ISO 9001, ISO 14001, National High-Tech Enterprise accreditation, China’s first A-share listed company in the industry (Stock Code: 300596)

· Industry Accolades: Captured 18.7% global market share in nylon anti-aging additives in 2025, ranking first; awarded "Innovative Automotive Material Supplier" and "Preferred Photovoltaic Additive Brand"

II. Wanhua Chemical – Major Chemical Conglomerate, Strong Footing in High-End Composite Formulations & New Energy Markets

Main Grades: WANOX® 1098 (Standard Industrial Grade), WANOX® 1098-LV (Low-Volatility Photovoltaic Grade), WANOX® 1098-MB (Masterbatch Grade)

Positive Market Feedback

· New energy vehicle lightweighting: Delivers exceptional performance in glass fiber reinforced PA66 battery brackets and motor housings. Customers report an 8–12℃ rise in thermal deformation temperature and 30% improved hydrolysis resistance, with supply chains covering core suppliers of BYD, NIO and Li Auto.

· Polyurethane/nylon alloy applications: Synergizes with Wanhua’s in-house polyurethane feedstocks for superior compatibility and anti-precipitation performance, certified by the European PU Modification Association for premium shoe soles and automotive interior soft components.

· Southeast Asian & Middle Eastern markets: Leverages fully self-produced intermediates for cost advantages to rapidly expand market share in Indonesia, Thailand and Vietnam modified plastic sectors; customers cite consistent quality, fast delivery and outstanding cost performance.

Authorized Certifications

· International: REACH, RoHS, FDA food contact, EU CE; passed supplier audits for Tesla, Volkswagen and BMW

· Domestic Qualifications: ISO 9001/14001/45001, National Green Factory certification, China Well-Known Trademark

· Technical Accolades: WANOX® 1098-LV received the 2025 China Petrochemical Federation Science and Technology Progress Award; photovoltaic grade certified by TÜV Rheinland for 25-year aging resistance

III. Songwon Industrial – Sino-Korean Joint Venture, Cost-Performance Leader, Widest Mid-to-Low-End Global Market Coverage

Main Grades: SONGNOX® 1098 (Standard Grade), SONGNOX® 1098-E (Economical Grade)

Positive Market Feedback

· General modified plastics & textile fibers: The highest-volume Antioxidant 1098 brand globally for PA6 spinning, standard appliance housings and automotive interior trim. Customers report stable 99.5% purity, strong price competitiveness and consistent batch performance.

· Middle East, South American & Southeast Asian markets: Low minimum order quantity (5 tons) and fast delivery make it the primary supplier for local small and medium modification manufacturers; exports to these regions rose 35% year-on-year in 2025.

· Excellent composite formulation compatibility: Works synergistically with phosphite 168 and light stabilizer 944 for low-cost anti-aging formulations, cutting downstream comprehensive material costs by 10–15%.

Authorized Certifications

· International: REACH, RoHS, FDA indirect food contact, South Korea KC certification

· System Certifications: ISO 9001, ISO 14001, South Korea Eco-Friendly Product Certification

· Market Recognition: Captured 22% global market share in mid-to-low-end Antioxidant 1098 in 2025; awarded "Most Popular Additive Brand for Southeast Asian Modified Plastics Industry"

IV. Yingkou Fenghuang New Materials – Established Domestic Manufacturer, Solid Reputation in Engineering Plastics & Cable Compounds

Main Grades: YFK® 1098 (Standard Grade), YFK® 1098-C (Cable Special Grade)

Positive Market Feedback

· Cable & wire insulation layers: Excels in cross-linked PE and PA insulation compounds with long-term 125℃ heat resistance, copper passivation and zero migration, integrated into overseas supply chains of Hengtong Optic-Electric and Zhongtian Technology.

· Domestic major engineering plastic manufacturers: Long-term supplier to Kingfa Technology and Prelit, praised for consistent quality, robust production capacity and moderate pricing suited for continuous mass manufacturing.

· Russian & Eastern European markets: Superior low-temperature performance (no precipitation at -40℃) and weather resistance deliver leading market share in Russian automotive components and outdoor plastic products.

Authorized Certifications

· International: REACH, RoHS, UL 94, Russian EAC certification

· Domestic Qualifications: ISO 9001, ISO 14001, National High-Tech Enterprise, Liaoning Provincial Specialized, Refined, Unique & Innovative Enterprise

· Product Accolades: YFK® 1098 designated as a National Key New Product; awarded "Excellent Brand of China Plastic Additives Industry"

V. Jiangsu Hanguang Industrial – State-Owned Veteran Enterprise, Standout Performance in Specialty Nylon & High-Temperature Applications

Main Grades: HANOX® 1098 (Standard Grade), HANOX® 1098-HT (High-Temperature Grade)

Positive Market Feedback

· High-temperature nylon (PA46/PA6T): Maintains stability during 230–260℃ processing with zero decomposition or discoloration, delivering 20% higher thermal stabilization efficiency than generic Antioxidant 1098 and cutting import replacement costs by 25%+.

· Petrochemical & oilfield tubing: Outstanding oil resistance and extraction resistance with long-term thermal stability for PA oilfield pipelines and chemical pump valve components, approved by Middle Eastern petroleum corporations.

· Niche European & American high-end markets: High purity (99.7%+), ultra-low impurities and consistent batch performance enable penetration into premium medical devices and food machinery sectors, passing EU food contact migration testing.

Authorized Certifications

· International: REACH, RoHS, FDA 21 CFR 177.1520, EU Regulation 1935/2004 food contact compliance

· System Certifications: ISO 9001, ISO 14001, OHSAS 18001, EU CE certification

· Industry Recognition: One of China’s earliest enterprises to realize full domestic production of Antioxidant 1098; awarded "Excellent Supplier to China Petrochemical Industry" and "Jiangsu Provincial High-Tech Enterprise"

VI. Summary: Core Differentiators & Sourcing Recommendations for Five Brands (For Overseas B-End Buyers)

· High-end automotive / photovoltaic / electronics: Prioritize Rianlon 1098-H, Wanhua 1098-LV – ultra-high purity, low metal ions, low volatility, full certification portfolio, direct import replacement capability

· Mid-to-high-end engineering plastics / cable compounds: Prioritize Fenghuang YFK® 1098, Hanguang HANOX® 1098-HT – consistent quality, superior heat & weather resistance, optimized for harsh operating conditions

· General modified plastics / textile fibers / low-cost applications: Prioritize Songwon SONGNOX® 1098-E – unbeatable pricing, reliable supply, exceptional composite formulation compatibility

For more authentic, objective information on multiple leading Chinese Antioxidant 1098 brands, please contact HiSiaddi customer service.

Antioxidant 1098: Production Processes, Supply Stability & Key Performance Indicators of China’s Five Leading Brands

As a new-type foreign trade service provider driven by dual engines of technology transformation and foreign trade export, HiSiaddi has built a "1+2+3+4=1" service system, capable of supplying Antioxidant 1098 sourced directly from multiple well-known original manufacturers.

With inherent R&D capabilities, HiSiaddi differs from single-brand manufacturers that only promote their own products. We provide objective analysis of multiple Chinese brands with strong global export competitiveness, detailing their production workflows, supply reliability, and core technical indicators, alongside an explanation of how these factors impact downstream buyers to streamline supplier selection.

For more authentic, objective information on multiple leading Chinese Antioxidant 1098 brands, please contact HiSiaddi customer service.

I. Rianlon – Industry-Leading Manufacturing Technology, Stable Supply, Import-Matching Performance Metrics

Main Grades: RIANOX® 1098 (Standard Grade), 1098H (High-Purity / Low Metal Ion Grade)

1. Production Process: Green Catalytic Esterification + Continuous Closed-Loop Synthesis, Unmatched Impurity Control

· Adopts one-step low-pressure esterification amidation of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and hexamethylenediamine with composite solid acid catalysts, operating at 140–150℃ – 30℃ lower than traditional acid chloride routes, minimizing side reactions and delivering a 99.2% product yield.

· Continuous-flow microchannel reactors coupled with rectification-crystallization purification under full DCS automated control eliminate human error; 100% mother liquor recycling cuts three-waste emissions by 40% versus industry averages.

· The premium 1098H grade undergoes additional ion exchange and molecular distillation to deeply remove metal ions and low-molecular-weight oligomers, limiting Na/K/Ca/Fe residues to ≤5ppm.

2. Supply Stability: Large-Scale Dual-Base Capacity, Full Industrial Chain Synergy, Short Delivery Cycles

· Dual production bases in Tianjin and Ningxia deliver total annual capacity of 18,000 tons, making Rianlon the world’s largest Antioxidant 1098 producer with 100% self-sufficiency of the core intermediate 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid.

· Permanent safety stock of 3,000 tons enables delivery within 5–7 days for standard orders; annual framework customers from Europe, America, Japan and Korea receive priority production scheduling, with supply disruption risk below 1%.

· Zero major delivery incidents for export shipments in 2025, supported by a 92%+ repeat purchase rate among overseas clients.

3. Key Performance Indicators (Direct Drop-In Replacement for BASF Irganox 1098)

· Purity: ≥99.8% (1098H: ≥99.9%)

· Melting Point: 158–161℃

· Volatile Content (105℃, 2h): ≤0.2%

· Light Transmittance (425nm): ≥97%; (500nm): ≥98%

· Metal Ion Residues: ≤5ppm (1098H)

· Ash Content: ≤0.05%

4. Impacts on Downstream Buyers

· High-end automotive, electronics and photovoltaic customers: Ultra-low metal ions, minimal volatility and exceptional purity prevent yellowing, electrical leakage and precipitation in PA66 insulation components, supporting high-temperature extrusion at 260–280℃ with post long-term thermal aging color difference ΔE<0.3, significantly boosting end-product service life and finished good yield rates.

· Reduced compliance overhead: Complete REACH, FDA and IATF16949 certification portfolios enable direct use in food-contact and automotive OEM applications without supplementary third-party testing.

· Cost advantages: 15–20% lower pricing than BASF equivalents with identical performance, eliminating technical risks associated with import substitution.

II. Wanhua Chemical – Fully Integrated Industrial Chain, Optimized for New Energy, Guaranteed Delivery Reliability

Main Grades: WANOX® 1098 (Standard Grade), 1098LV (Low-Volatility Photovoltaic Grade), 1098MB (Masterbatch Grade)

1. Production Process: Self-Produced Intermediates + Co-Production Workflow, Dual Advantages in Cost & Stability

· Leverages its integrated MDI industrial chain for fully self-sourced aniline, cyclohexylamine, hexamethylenediamine and tert-butylphenol, eliminating external supply chain volatility for critical intermediates.

· Adopts transesterification-amidation coupled reactions with low-temperature high-selectivity catalysis to avoid dealkylation side reactions at high temperatures; vacuum flash evaporation plus recrystallization delivers consistent ≥99.7% purity.

· The 1098LV grade utilizes supercritical CO₂ extraction to strip trace volatiles, limiting volatile weight loss to ≤0.15% and meeting 25-year aging resistance requirements for photovoltaic POE encapsulant films.

2. Supply Stability: Ample Capacity, Flexible Production Scheduling, Fast Response Delivery

· Yantai Shandong base operates 15,000 tons/year capacity, with 12,000 tons actual output in 2025; permanent inventory of 2,000 tons enables delivery within 5 days for orders below 10 tons, and 7 days for orders above 50 tons.

· New energy customer orders receive priority production scheduling to support BYD, NIO and Li Auto supply chains, achieving a 99.5% on-time delivery rate in 2025.

· Global bonded warehouses in Shanghai and Rotterdam cut European and American delivery lead times to 3–5 days.

3. Key Performance Indicators (Class-Leading Performance in New Energy Applications)

· Purity: ≥99.7% (LV Grade: ≥99.8%)

· Melting Point: 157–160℃

· Volatile Content: ≤0.2% (LV Grade: ≤0.15%)

· Light Transmittance (425nm): ≥96%

· 1% Thermal Weight Loss Temperature: ≥275℃

· Moisture Content: ≤0.1%

4. Impacts on Downstream Buyers

· Photovoltaic encapsulant film manufacturers: Low volatility and superior heat resistance prevent yellowing and adhesion loss in POE films under high-temperature conditions, eliminating precipitation after 25 years of outdoor aging and passing TÜV Rheinland certification to lift module power generation efficiency and service life.

· New energy vehicle lightweighting: Delivers 30% improved hydrolysis resistance and an 8–12℃ rise in thermal deformation temperature for glass fiber reinforced PA66 battery brackets, reducing component cracking and premature failure risks.

· Controlled cost volatility: Full self-sufficiency of intermediates insulates product pricing from raw material swings, ideal for long-term framework procurement agreements.

III. Songwon Industrial – Sino-Korean Joint Venture, Cost-Performance Benchmark, Preferred Standard-Grade Supplier

Main Grades: SONGNOX® 1098 (Standard Grade), 1098E (Economical Grade)

1. Production Process: Mature Esterification Technology + Refined Recrystallization, Unrivaled Cost Performance

· Utilizes proven esterification-amidation workflows with low-cost titanium ester catalysts for the reaction between methyl 3,5-di-tert-butyl-4-hydroxyphenylpropionate and hexamethylenediamine, delivering a 98.5% product yield.

· Two-stage recrystallization paired with low-temperature drying controls uniform particle size distribution (200–300 mesh) for excellent dispersion performance; production targets stable 99.5% purity rather than ultra-high purity to drastically reduce manufacturing costs.

· On-site South Korean technical teams oversee quality control to maintain tight cross-batch consistency, optimized for mass standard-grade production.

2. Supply Stability: Large-Scale Capacity, Low-Cost Operations, Extensive Southeast Asian & Middle Eastern Reach

· Zibo Shandong base delivers 12,000 tons/year capacity, capturing 22% global market share in mid-to-low-end segments with permanent inventory of 1,500 tons. Minimum order quantity of 5 tons with 7-day delivery makes it the industry’s most SME-friendly supplier.

· Exports to Southeast Asia, Middle East and South America rose 35% year-on-year in 2025, establishing it as the primary supplier for local small and medium modification manufacturers with minimal supply disruption risk.

· Strong price competitiveness: Proactive price reductions during off-seasons to retain clients, with priority production reserved for long-term partners during capacity crunches.

3. Key Performance Indicators (Reliable Standard-Grade Benchmark)

· Purity: 99.5%±0.2%

· Melting Point: 155–159℃

· Volatile Content: ≤0.3%

· Light Transmittance (425nm): ≥95%

· Ash Content: ≤0.1%

· Particle Size: 200–300 mesh

4. Impacts on Downstream Buyers

· General modified plastic & textile fiber manufacturers: Exceptional cost performance delivers 25–30% savings versus imported equivalents, with stable 99.5% purity meeting standard anti-oxidation requirements for PA6 spinning, appliance housings and automotive interior trim, cutting comprehensive material costs by 10–15%.

· Broad composite formulation compatibility: Works synergistically with antioxidants 168 and light stabilizer 944 for low-cost anti-aging blends without disrupting downstream color matching or processing performance.

· SME-friendly sourcing terms: Low minimum order quantity, fast delivery and stable pricing support small-batch, frequent order procurement models.

IV. Yingkou Fenghuang New Materials – Fully Self-Sufficient Industrial Chain, Strong Track Record in Engineering Plastics & Cable Compounds

Main Grades: YFK® 1098 (Standard Grade), 1098C (Cable Special Grade)

1. Production Process: End-to-End Self-Production from Phenol to Antioxidant, Full Control of Quality & Cost

· Unique fully integrated industrial chain: In-house manufacturing spanning phenol → tert-butylphenol → 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid → finished Antioxidant 1098 eliminates outsourced intermediate purchases for complete independent control over quality and production costs.

· High-temperature esterification paired with vacuum amidation drives full reaction conversion and minimizes impurities; water-cooled crystallization and airflow milling deliver uniform low-dust particles optimized for high-speed cable compound extrusion.

· The 1098C cable grade incorporates copper passivating functional groups to deliver copper resistance and extraction resistance, tailored for long-term heat resistance requirements of cross-linked PE/PA insulation materials.

2. Supply Stability: Northeast Production Base, Consistent Capacity, Optimized for Cold-Climate & Russian Markets

· Yingkou Liaoning base operates 10,000 tons/year capacity focused exclusively on engineering plastics and cable compounds, with permanent inventory of 1,200 tons. Orders below 10 tons deliver within 7 days, orders above 50 tons within 10 days.

· Leading market share in Russia and Eastern Europe, with superior low-temperature performance eliminating precipitation at -40℃ to resolve whitening and embrittlement issues for automotive components and outdoor plastic goods manufactured in cold climates.

· Long-term stable supplier to major manufacturers including Hengtong Optic-Electric and Kingfa Technology, with consistent quality and reliable delivery track record.

3. Key Performance Indicators (Optimized for Engineering Plastics & Cable Insulation)

· Purity: ≥99.6% (Cable Grade: ≥99.7%)

· Melting Point: 156–160℃

· Volatile Content: ≤0.25%

· Light Transmittance (425nm): ≥96%

· Copper Ion Residues: ≤10ppm (Cable Grade)

· Extraction Resistance Rate: ≤1.5%

4. Impacts on Downstream Buyers

· Cable & insulation material manufacturers: Copper passivation, extraction resistance and long-term 125℃ heat resistance prevent insulation layer aging, cracking and electrical leakage, extending cable service life to 30+ years.

· Large-scale engineering plastic producers: Full in-house intermediate production delivers tight cross-batch quality consistency suited for uninterrupted mass manufacturing, reducing production line shutdowns and defective goods caused by additive performance fluctuations.

· Northern & Russian market clients: Low-temperature precipitation resistance eliminates whitening and brittleness defects in cold-environment end products.

V. Jiangsu Hanguang Industrial – State-Owned Veteran Manufacturer, Industry-Leading High-Temperature Grade Performance, Optimized for Specialty Nylon

Main Grades: HANOX® 1098 (Standard Grade), HANOX® 1098-HT (High-Temperature Grade)

1. Production Process: Traditional High-Pressure Amidation + Deep Refining, Superior High-Temperature Thermal Stability

· One of China’s earliest manufacturers to achieve full domestic Antioxidant 1098 production, utilizing 1.2MPa high-pressure amidation for complete reaction conversion, highly regular molecular structures and exceptional thermal stability.

· Activated carbon decolorization, precision filtration and vacuum drying deliver ultra-low impurity levels and pale product color; the HT high-temperature grade achieves 1% thermal weight loss at ≥280℃, suited for PA46/PA6T processing temperatures of 230–260℃.

· Rigorous state-owned enterprise quality control mandates full-spectrum batch testing and 3-year sample retention for complete product traceability.

2. Supply Stability: Moderate Production Capacity, Consistent Quality, Priority Support for Specialty Grade Long-Term Clients

· Wuxi Jiangsu base operates 8,000 tons/year capacity focused on premium specialty nylon and high-temperature applications, with permanent inventory of 800 tons. Standard orders below 10 tons deliver within 7 days, specialty customized orders within 10 days.

· Captures the largest domestic market share in PA46/PA6T applications, supplying Asian facilities of DuPont and DSM; high-temperature grade products operate at near full capacity with priority production reserved for long-term framework clients.

· Export focus targets niche high-end European and American markets with stable pricing and strong premium capacity.

3. Key Performance Indicators (Class-Leading High-Temperature Grade Metrics)

· Purity: ≥99.7% (HT Grade: ≥99.8%)

· Melting Point: 158–161℃

· Volatile Content: ≤0.2% (HT Grade: ≤0.15%)

· 1% Thermal Weight Loss Temperature: ≥275℃ (HT Grade: ≥280℃)

· Light Transmittance (425nm): ≥97%

· Free Amine Content: ≤0.03%

4. Impacts on Downstream Buyers

· High-temperature nylon (PA46/PA6T) manufacturers: Exceptional thermal stability eliminates decomposition and discoloration during 260℃ processing, delivering 20% higher anti-oxidation efficiency than generic Antioxidant 1098 and cutting import replacement costs by 25%+.

· Petrochemical & oilfield tubing manufacturers: Outstanding oil resistance and extraction resistance with long-term thermal stability meet requirements for PA oilfield pipelines and chemical pump valve components, validated by Middle Eastern petroleum corporations.

· Premium food machinery & medical device manufacturers: High purity, ultra-low impurities and pale color meet EU Regulation 1935/2004 food contact standards with zero precipitation for safe food-grade and medical applications.

VI. One-Sentence Summary of Core Brand Differentiators & Downstream Sourcing Guidance

· High-end automotive / photovoltaic / electronics: Select Rianlon 1098H, Wanhua 1098LV – ultra-high purity, low metal ions, minimal volatility, full certification portfolio, direct import replacement capability

· Mid-to-high-end engineering plastics / cable compounds: Select Yingkou Fenghuang YFK® 1098, Jiangsu Hanguang HANOX® 1098-HT – consistent quality, superior heat & weather resistance, optimized for harsh operating environments

· General modified plastics / textile fibers / low-cost applications: Select Songwon SONGNOX® 1098-E – unbeatable pricing, reliable supply, exceptional composite formulation compatibility

For more authentic, objective information on multiple leading Chinese Antioxidant 1098 brands, please contact HiSiaddi customer service.

As a new-type foreign trade service provider driven by both technology transformation and foreign trade services, HiSiaddi has established a "1+2+3+4=1" service system and can supply Antioxidant 1098 sourced directly from multiple well-known original manufacturers. As a research & development-oriented foreign trade service provider, HiSiaddi will analyze key purchasing considerations and critical indicators from a professional perspective to ease buyers’ selection concerns.

If you require more professional and in-depth analysis regarding Antioxidant 1098 selection, please contact HiSiaddi customer service.

I. Core Comprehensive Global Purchasing Factors (Pre-Transaction Full-Dimensional Assessment to Avoid Compliance, Quality & Supply Risks)

Prior to finalizing suppliers and product grades, a full-dimensional pre-transaction assessment is the core prerequisite to guarantee stable cross-border order delivery and reduce after-sales production issues.

First, strictly verify regulatory requirements and market access qualifications for target countries and regions. As a polymer additive, Antioxidant 1098 is widely applied in highly regulated scenarios including automotive parts, electronic appliances, textile fibers, food-contact plastics, children’s rubber & plastic products, and drinking water contact materials. Chemical safety, environmental protection and restricted substance regulations vary drastically worldwide. For the EU market, products must complete REACH registration and SVHC substance of very high concern screening; electronic and automotive rubber & plastic components shall comply with RoHS 2.0, while children-contact products and toy auxiliary materials must additionally meet EN 71-3 standards. For the North American market, TSCA chemical inventory listing is mandatory; food-contact, drinking water plastic and packaging materials need FDA testing, and automotive interior & engineering plastics shall follow North American industrial material specifications. Japan, South Korea and Australia impose extremely strict controls on residual monomers, heavy metals, organic impurities, odor and migratable substances. Southeast Asia, the Middle East and South America adopt general industrial safety standards. If goods are re-exported to European and American end markets, a complete set of international certification documents must be provided. Customs authorities worldwide conduct routine inspections of multi-lingual MSDS, batch-by-batch COA test reports and third-party test certificates, requiring full consistency among certificate issuers, production factories and shipment batch information. Missing qualifications or inconsistent information will directly lead to cargo detention and return. All items must be checked and confirmed one by one in the early purchasing stage.

Second, fully match downstream production processes and equipment operating conditions. Antioxidant 1098 normally exists as white crystalline powder or pellets, mainly used in plastic granulation, injection molding, extrusion, wire drawing, spinning, compounding, calendering and other procedures. Featuring high thermal decomposition temperature, it adapts to all high-temperature processing technologies. This additive plays a decisive role in material aging resistance, surface color and precipitation behavior. Downstream processes focus on purity, melting point, thermal stability, particle size, dispersibility and volatile matter: Insufficient purity with high residual synthetic intermediates and byproducts will reduce anti-aging efficiency and aggravate yellowing and blooming of finished products. High-temperature extrusion, continuous spinning and thin-wall product production lines demand strong thermal stability and ultra-low volatile content to prevent additive decomposition and volatilization during processing, which causes die buildup, smoke and pinholes in finished goods. Fully automatic closed batching and high-speed compounding production lines prioritize uniform particle/pellet size and good fluidity without caking; uneven particle size and severe caking result in poor dispersion and unbalanced local antioxidant performance. For long filaments, films and transparent product systems, excellent compatibility between antioxidant and substrate is a must to avoid long-term migration, precipitation and transparency loss. New customers are advised to request free samples for machine trial testing in advance to verify processing stability, yellowing resistance and long-term aging performance of finished products.

Third, distinguish end-product positioning and long-term service environments. High-value products such as high-end automotive engineering plastics, electronic connectors, high-temperature nylon components, industrial filaments and precision cables must adopt high-purity, low-volatility, low-impurity and high-heat-resistant refined grades. For food-contact packaging, drinking water pipes, children’s rubber & plastic and fiber products exported to the EU, North America and Australia, migratable heavy metals, toxic organic residues and restricted precipitates must be strictly controlled. Standard industrial grades can be selected for general nylon miscellaneous parts, civil plastic accessories and conventional industrial fibers to balance procurement costs. Products serving long-term high-temperature, enclosed or outdoor working conditions shall be evaluated for long-term thermal-oxidative stability, extraction resistance and migration resistance to prevent additive loss and rapid material aging failure after long-term service. Select products as needed based on end positioning to balance quality and operating profits.

Fourth, evaluate supplier production capacity, raw material supporting capacity and long-term supply stability. Antioxidant 1098 is synthesized via condensation, dealcoholization, recrystallization, drying, sieving/pelletization using methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and hexamethylenediamine as core raw materials. Recrystallization purification and impurity removal processes directly determine product purity and thermal stability. Buyers with long-term large global orders, multi-port distribution and peak season replenishment demands shall prioritize large-scale factories equipped with continuous synthesis and multi-stage recrystallization production lines and self-sufficient core raw material supply. Such enterprises are less affected by upstream raw material price hikes and regional environmental inspections, with low capacity fluctuations across off-peak and peak seasons and highly consistent batch indicators and service performance. Meanwhile, confirm that suppliers support direct delivery from major domestic export ports including Qingdao, Shanghai, Ningbo and Tianjin, and flexibly accept full-container, LCL and small-batch urgent orders. In addition, inspect enterprise laboratory capabilities to verify full physical & chemical testing, thermogravimetric analysis, aging performance and migration precipitation testing capacity, as well as the ability to cooperate with international third-party institutions such as SGS, Intertek and BV for sampling and re-inspection.

Fifth, plan cross-border packaging, transportation and long-distance storage & transportation solutions. As solid powder/pellets, Antioxidant 1098 is not classified as dangerous chemicals, with few global sea, land and air transportation restrictions. Storage & transportation characteristics: low hygroscopicity, yet prone to caking under high temperature and heavy pressure; slow oxidative discoloration under prolonged light exposure. For ocean freight and tropical high-temperature shipping routes, adopt double-layer sealed packaging with inner moisture-proof PE film plus thickened paper-plastic composite bags/fiber drums, with standard 25kg specifications; bulk bags are available for large-scale automatic production lines. Containers shall be kept away from light and heat to avoid caking and discoloration caused by high cabin temperature during shipping. During storage and transportation, strict separation from strong acids, strong alkalis and strong oxidants is required; warehouses shall be cool and dry with limited stacking height, storage temperature controlled below 35°C, and strict first-in-first-out implementation to prevent deterioration from long-term storage.

Finally, consider customized product services and polymer formulation technical supporting capabilities. Different plastic systems, processing equipment and molding processes impose personalized requirements on Antioxidant 1098 in terms of particle size, pellet form, dispersibility and purity grade. Mature factories can provide customization including particle size screening, pelletization and deep purification. Professional suppliers can also offer formulation guidance, matching auxiliary antioxidants, light stabilizers and lubricants to optimize compound ratios and improve comprehensive anti-aging, anti-yellowing and weather resistance of the system, solving production problems such as die buildup, precipitation and poor color. Comprehensive technical service is a key bonus factor for long-term cooperation.

II. Universal Basic Indicators for All Grades (Mandatory Inspection for All Purchasing Scenarios, Core Quality Thresholds)

Regardless of powder/pellet form, grade or global destination, the following physical and chemical indicators are rigid standards requiring batch-by-batch factory and incoming inspection. Substandard indicators will directly weaken anti-aging effects and trigger surface defects and performance degradation of finished products, representing non-negotiable quality thresholds.

1.

Active Ingredient Purity (Main Content of 1098) Purity is the core factor determining antioxidant efficiency, compatibility and precipitation risk. Industry classification standards: general industrial grade ≥98.0%, standard engineering plastic grade ≥98.5%, high-end food-contact/automotive electronic grade ≥99.0%. Low purity means high residual condensation byproducts and unreacted raw materials, which not only drastically reduce thermal-oxidative protection capacity but also easily cause blooming, yellowing and excessive volatile matter in finished products, making this the top priority inspection item upon goods arrival.

2.

3.

Melting Point/Melting Range The standard melting range of Antioxidant 1098 is 155~165°C. A narrower melting range indicates purer components and fewer low-melting impurities. An excessively wide melting range signals high impurity content, leading to premature melting and volatilization during processing, die buildup and surface defects of finished goods. This indicator is strictly controlled for high-temperature spinning and film products.

4.

5.

Heating Loss (Moisture + Volatile Substances) It represents the total amount of free water and low-boiling residual impurities. Heating loss ≤0.30% for general grades, ≤0.15% for high-end low-volatility processing grades. Excessive moisture and volatile content generate water vapor and smoke during high-temperature processing, forming internal bubbles and pinholes in plastics while aggravating die buildup, damaging finished product appearance and compactness.

6.

7.

Ash Content Ash reflects insoluble inorganic impurity content. Ash ≤0.10% for general grades, ≤0.05% for high-end precision products and transparent material grades. Inorganic particles in ash act as internal stress points of materials, reducing mechanical strength and wear resistance of finished products, and impairing surface smoothness of spun fibers and films.

8.

9.

Appearance & Color Qualified products are white crystalline powder or white pellets. Yellowish or grayish color indicates oxidation or excessive impurities. Abnormal color directly implies decreased antioxidant activity, and finished products manufactured with such goods will suffer mass yellowing, making them prohibited for exterior and light-colored product applications.

10.

11.

Particle Size/Pellet Distribution & Caking Rate Powder products mainly adopt 80~120 mesh, while pellet sizes can be customized according to customer equipment; sieve residue and caking rate must be strictly controlled. Uneven particle size and severe caking lead to poor dispersion in resin and localized insufficient antioxidant protection; excessive fine powder increases workshop dust, impairing closed production environments.

12.

III. Specialized Indicators by Global Application Scenario (Differentiated Key Control by End Use, Core Basis for Grade Differentiation, Pricing and Global Regulatory Compliance)

Based on four mainstream global application fields of Antioxidant 1098, specialized test indicators are categorized with differentiated control priorities for each scenario, which also serve as the core basis for grade differentiation, pricing and alignment with international regulations. You may accurately control product quality against your end products.

(I) Automotive & Electronic Engineering Plastics (Automotive Nylon Components, Electronic Connectors, Precision Injection-Molded Parts, High-End EU, Japanese, South Korean & North American Markets)

Core requirements: high thermal stability, low volatility, anti-precipitation, long-term aging resistance and low yellowing with the strictest indicator control.

1. Thermogravimetric Analysis (TGA): Simulate high-temperature extrusion and injection molding conditions to test weight loss ratio at different temperatures; ultra-low weight loss above 280°C is required to avoid processing buildup and smoke.

2. Yellowing Resistance: Conduct thermal-oxidative aging and xenon lamp aging tests to evaluate long-term color stability, a core indicator for automotive interior and exterior parts.

3. Migration & Precipitation Test: Perform high-low temperature cycling and immersion tests to confirm no additive migration or blooming that impairs surface coating and adhesion performance of finished products.

4. Heavy Metal Content: Strictly comply with RoHS standards, with lead, cadmium, mercury, hexavalent chromium and other restricted substances below regulatory limits.

5. Processing Stability: Conduct repeated extrusion tests to verify no obvious attenuation of antioxidant performance after multiple processing cycles.

(II) Food & Drinking Water Contact Plastic Products (Packaging, Pipe Fittings, Daily Containers, Strictly Regulated EU, North American & Australian Categories)

On top of general indicators, align with safety regulations with core focus on low migration, non-toxicity, high safety and controllable impurities.

1. Migratable Substances: Test migration volume in media such as water and grease per FDA and EN 71-3 standards, a decisive pass/fail item for market access.

2. Hazardous Organic Residue Screening: Strictly control synthetic intermediates, residual amines and phenolic impurities to reduce toxicity and contact risks.

3. Total Volatiles: Further tighten volatile content indicators to prevent small molecule precipitation from contaminating contact media.

(III) Synthetic Fibers & Industrial Filaments (Nylon Spinning, Industrial Yarns, Textile Auxiliaries, Global General Markets)

Core requirements: excellent dispersibility, low volatility, no yarn breakage and no surface spots.

1. Dispersibility: Ensure uniform dispersion after compounding with nylon chips to eliminate yarn breakage and color difference caused by agglomeration during spinning.

2. High-Temperature Volatiles: Spinning generally operates at elevated temperatures; volatile content must be tightly controlled to prevent spinneret blockage and surface defects on yarns.

3. Thermal Aging Resistance: Guarantee no rapid strength attenuation of fibers during stretching, ironing and long-term service.

(IV) General Nylon Miscellaneous Parts & Ordinary Rubber & Plastic Products (Civil Plastic Parts, Conventional Injection-Molded Parts, Low-End Compounding Materials, General Industrial Markets in Southeast Asia, Middle East, South America and Eastern Europe)

Focus on basic anti-aging performance and cost control with moderately relaxed indicator requirements. Prioritize inspection of three core basic indicators: purity, melting point and heating loss to guarantee standard anti-aging effects; minor ash content and slight particle size fluctuations can be tolerated to balance procurement costs and mass production efficiency.

IV. Supplementary Cross-Border Purchasing Dimensions (Qualification Certifications, Customization Services, Supply Stability & Product Inherent Drawbacks)

Beyond physical & chemical and service indicators, cross-border global procurement also requires simultaneous attention to qualification certifications, customizable services, supply capacity and inherent product drawbacks to ensure long-term stable cooperation.

(I) Mandatory Global Market Qualification Certifications

Universal basic documents: ISO9001 quality management system certification, multi-lingual MSDS, batch-by-batch COA reports and SGS basic physical & chemical test reports. EU market: REACH registration, SVHC screening, RoHS 2.0; EN 71-3 supplementary for children/food-contact products. North American market: TSCA chemical inventory listing, FDA (for food-contact products), CPSIA (for children’s articles). Japan, South Korea & Australia: local chemical inventory filing, specialized heavy metal & migratable substance testing. All certificates must remain valid with consistent information among manufacturing factories, brands and shipment batches.

(II) Acceptable Customization Services

Major domestic Antioxidant 1098 manufacturers offer regular personalized customization for global B2B customers:

1. Form customization: Switch between pure powder, pellets and micro-pellets to adapt to different batching, extrusion and spinning equipment.

2. Deep purification: Further reduce residual impurities, volatiles and migratable substances for high-demand food-contact and automotive electronic scenarios.

3. Particle size screening: Precise grading by mesh count to optimize dispersibility and fluidity.

4. Anti-caking treatment: Surface modification of powder for long-distance ocean shipping, high-temperature warehousing and automatic batching.

5. Packaging customization: Flexible switch between 25kg bags, fiber drums and bulk bags, plus customized multi-lingual outer packaging labels.

6. Pre-mixed compounding: Pre-blend with auxiliary antioxidants, light stabilizers and lubricants at customer-specified ratios to simplify downstream batching procedures.

(III) Key Criteria for Judging Supply Stability

Prioritize large-scale factories with self-sufficient raw material supply, continuous synthesis and multi-stage recrystallization production lines. Recrystallization processes directly determine product purity, melting range and volatile content; continuous production minimizes batch differences. Enterprises with ten-thousand-ton production capacity maintain stable output and delivery cycles amid raw material price fluctuations, environmental supervision and peak order seasons. Standard full-container order lead time ranges from 7 to 12 days, with direct delivery from multiple ports and support for urgent rush orders. Small-scale intermittent production units feature weak purification capacity, high residual impurities and significant batch fluctuations, making them unsuitable for high-end automotive, food-contact applications and long-term global cross-border large orders.

(IV) Inherent Product Drawbacks & Purchasing Risk Reminders

1. The product is prone to caking under high temperature and heavy pressure; ocean containers must be protected from light and heat, with limited stacking height and controlled warehouse temperature.

2. Long-term open-air light storage causes slow oxidative discoloration and decreased antioxidant activity; strict first-in-first-out implementation is required to avoid over-storage deterioration.

3. Powder-form products generate certain dust; pellet grades are recommended for clean workshops and spinning plants.

4. When used alone in strong UV outdoor systems, weather resistance is limited; light stabilizers and auxiliary antioxidants are recommended for compounding in outdoor products.

5. Excessive addition ratio fails to significantly boost protection effects and instead raises blooming risk; gradient formulation tests are required in advance to determine optimal dosage for new formulas.

6. Ultra-high-purity, low-migration food/automotive special grades involve complex purification procedures and carry higher selling prices, slightly increasing formulation costs.

If you require more professional and in-depth analysis regarding Antioxidant 1098 selection, please contact HiSiaddi customer service.