HiSiaddi is an innovative foreign trade service provider driven by dual business pillars: technology commercialization and international trade. We operate under a "1+2+3+4=1" service system and can supply dipropylene glycol dimethyl ether (DMM) sourced directly from multiple well-known original manufacturers. As a tech-driven foreign trade enterprise, HiSiaddi has collaborated repeatedly with manufacturers on technology conversion and accurately captured market demands, enabling us to resolve customized DMM product requirements for clients. Below is a case study detailing how HiSiaddi delivered a customized DMM solution.
Contact HiSiaddi customer service for inquiries about customized product services.
CERACHEM INC., headquartered in Silicon Valley, California, USA, is a listed leading North American enterprise specializing in electronic fine chemicals with a 33-year track record in R&D and production of semiconductor wafer cleaning solutions, liquid crystal panel strippers, and high-end lithium battery electrolyte additives. Its products are mass-supplied to top North American wafer foundries and liquid crystal panel manufacturers.
Dipropylene glycol dimethyl ether (DMM) serves as an ultra-high polarity solvent dedicated to dry precision circuit cleaning for semiconductors, requiring extremely low metal ion content and stringent control of trace alcohol ether impurities. The client has long purchased US Dow electronic-grade DMM under original brand specifications, with a stable annual customized order volume of 132 tons. Products comply with US ASTM electronic chemical standards, REACH, TSCA, and SEMATECH semiconductor raw material access specifications.
Due to annual raw material price hikes, maintenance shutdowns at North American local production facilities, and extended production lead times (up to 75 days) for Dow’s premium grades, the client initiated localized alternative sourcing from China. The client independently sent samples to five major domestic ether manufacturers for customization trials over three months, yet all trials failed. Most domestic manufacturers mass-produce general-grade DMM for coatings and industrial cleaners using conventional catalysis and single-tower distillation processes. Their production lines are fixed, and manufacturers are unwilling to invest in equipment retrofits. Conventional-grade products contain excessive residual methanol, dipropylene glycol monomethyl ether impurities, and heavy metal ions, failing to meet strict indicators for chip cleaning processes. The client’s pilot production of cleaning solutions supporting next-generation 5nm chips was suspended, and they fully entrusted HiSiaddi with indicator decomposition, factory screening, process customization, lab/pilot/mass production trials, and full export compliance implementation.
1. Main component dipropylene glycol dimethyl ether purity ≥99.90%; single organic impurities including monomethyl ether, methanol, and water ≤30 ppm each, total impurities ≤150 ppm (conventional domestic industrial-grade products generally contain over 3,000 ppm organic impurities).
2. Individual metal ions (Na, K, Fe, Ca, Mg, Al) ≤1 ppb; excessive metal impurities cause short-circuiting and scrapping of wafer circuits.
3. Water content ≤20 ppm, APHA color ≤5; colorless, transparent, and free of suspended solids.
4. Peroxide content ≤1 ppm to prevent oxidative deterioration of photoresist during chip cleaning.
5. Packaged in electronic-grade clean lined stainless steel drums with full-process nitrogen-sealed filling; each batch is accompanied by complete GC/ICP test spectra, 6-month stability test reports, English Certificates of Analysis (COA), and TSCA/REACH compliance documents.
Most domestic DMM production facilities are continuous mass industrial lines adopting alkali-catalyzed synthesis and single-tower atmospheric distillation. Retrofitting multi-stage vacuum precision distillation and ion exchange metal removal sections requires revamping distillation towers and adding ultra-pure filtration systems, incurring high renovation costs. Customized orders account for a small proportion of manufacturers’ overall production capacity, leaving them with no incentive to adjust production lines separately and refusing independent customized development.
Methanol, monomethyl ether, and the main product have close boiling points, making deep cutting and separation impossible with conventional distillation. Conventional processes cannot remove trace water-soluble metal salts in the system, and simple distillation alone fails to achieve ppb-level ion control.
Lab-scale samples from some manufacturers temporarily meet standards after manual adjustment, yet mass production suffers unstable raw material sources, inaccurate temperature control, and unfixed distillation collection parameters. Batch-to-batch fluctuations in impurities and metal ions during mass production make it impossible to maintain consistent quality for continuous semiconductor manufacturing.
Domestic manufacturers only provide simplified domestic standard quality inspection reports, lacking TSCA registration documents, SEMATECH raw material compliance statements, and full ICP metal test reports. Without these documents, the client cannot pass supply chain QA audits by US electronics factories, and products cannot be imported and warehoused even if physical and chemical indicators meet requirements.
Leveraging domestic glycol ether industrial chain resources, HiSiaddi screened 2 out of 12 ether manufacturers equipped with DMC composite catalytic units, four-stage vacuum precision distillation systems, and deep impurity removal ion exchange facilities. We collaborated with the manufacturers’ R&D centers to upgrade processes as follows:
1. Optimize the methylated synthesis catalytic system to reduce methanol and monomethyl ether byproducts at the source.
2. Construct independent dedicated four-stage stepped vacuum distillation lines to precisely cut light and heavy fractions and eliminate most trace organic impurities.
3. Add two-stage special ion exchange resin refining and ultrafiltration procedures for finished products to deeply remove trace metal ions and stabilize all metal indicators below 1 ppb.
4. Store finished products in airtight, light-shielded tanks under nitrogen protection to avoid peroxide generation via oxidation.
1. 10kg lab-scale trial: Finalize full process parameters; entrust a CNAS-certified electronic chemical third-party laboratory to conduct full-indicator testing. Qualified samples are packed and air-shipped to the client’s US laboratory for cleaning solution formulation lab trials, with distillation collection temperatures fine-tuned based on cleaning performance of finished products.
2. 800kg continuous pilot production: Run three parallel batches of pilot production; retain samples for 6-month room-temperature light-shielded accelerated stability testing, formalize standardized mass production SOPs, and lock fixed parameters for raw material ratios, temperature control, and distillation pressure.
3. 18-ton mass production trial order: HiSiaddi deploys process specialists to supervise full on-site production inspections, sampling at every working procedure including raw material incoming inspection, synthetic reaction, multi-stage distillation, ion refining, and airtight filling.
1. All products use semiconductor-specific 200L iron drums with stainless steel inner coating. Drums undergo nitrogen purging to remove water and oxygen before filling to eliminate impurity introduction from packaging.
2. HiSiaddi collaborates with manufacturers to compile complete technical archives: full-component GC/ICP test spectra, batch stability reports, and SGS-SVHC screening reports. We draft English Safety Data Sheets (SDS) and electronic-grade English COAs in compliance with US TSCA, EU REACH, and CLP regulations, paired with SEMATECH compliance statements.
Reserve exclusive customized dedicated production line capacity with manufacturers, arrange batch production according to the client’s monthly material demand, complete hazardous goods classification, dangerous goods packaging inspection, customs clearance, and ship goods to the US on schedule.
1. The 18-ton trial order cleared US customs smoothly. When used by the client to formulate wafer cleaning solutions, the cleaning cleanliness, volatilization rate, and storage stability fully matched Dow’s original products, resulting in the same chip defect rate as imported raw materials. The customized domestic DMM was successfully introduced into formal mass production.
2. The comprehensive procurement cost of customized domestic raw materials decreased by 30.8% compared to Dow’s original products, completely resolving the client’s supply shortage and raw material price inflation issues. A yearly 132-ton quarterly phased framework procurement contract was signed (35 tons Q1, 38 tons Q2, 32 tons Q3, 27 tons Q4).
3. In the following year, the client entrusted HiSiaddi with targeted customization of modified dipropylene glycol dimethyl ether derivatives for R&D of new ultra-thin panel stripping solvents, deepening long-term new product cooperation.
1. The domestic dipropylene glycol dimethyl ether industry mainly mass-produces bulk materials for coatings and industrial solvents. Ultra-high-purity customized electronic-grade DMM is difficult for manufacturers to independently deliver to overseas high-end clients due to high equipment renovation costs and niche order volumes.
2. Core value of HiSiaddi: Connect end-user electronic raw material indicators, factory technical retrofits, multi-stage sample verification, third-party special testing, and full European & American compliance industrial chain services, bridging multiple technical, regulatory, and process gaps between upstream manufacturers and overseas high-end electronic material clients.
3. Core procurement demands of North American high-end electronic chemical clients: ppb-level impurity control, high batch consistency, and complete compliant traceability documents take priority over pricing. Technical supporting services are the key to domestic substitution and long-term binding of high-end clients.
Contact HiSiaddi customer service for inquiries about customized product services.
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