Polyoxyethylene Glycol 400 Solvent

In cosmetic, pharmaceutical, and industrial formulations, insufficient purity or uneven molecular weight distribution in PEG products can lead to incomplete dissolution of active ingredients, crystallization during storage, emulsion separation, or turbidity in liquid formulations. Manufacturers‍‌‍‍‌ are quite often the ones who have to introduce additional solubilizers or make repeated formula adjustments—actions that lead to higher production costs as well as extended R&D ‍‌‍‍‌periods.

Our Polyethylene glycol 400 for synthesis is produced using a stable polymerization process that strictly controls key parameters such as molecular weight distribution, moisture content, and color. In‍‌‍‍‌ short, this product allows customers to solubilize more material with 25%, increase stability of the store by 30% and reduce time for formulation development of ‍‌‍‍‌20%.

Upstream Laboratory and Technical Support

PEG-400 is widely used in pharmaceutical excipients, cosmetics, food additives, industrial lubricants, metalworking fluids, and fine chemicals. The‍‌‍‍‌ main properties such as the molecular weight range, the water percentage, the hydroxyl number, color, and the viscosity mainly affect the product's capability to dissolve other substances, its stability and how well it can be ‍‌‍‍‌processed. With‍‌‍‍‌ the assistance of our upstream production facilities and CNAS-accredited laboratories, a complete testing system for the PEG (Polyethylene Glycols) product series has been put in place ‍‌‍‍‌successfully. We‍‌‍‍‌ are very well-equipped with over 30 analytical instruments in our laboratories besides Gel Permeation Chromatography (GPC), Gas Chromatography (GC), Karl Fischer moisture titrators, Brookfield viscometer, automatich potentiometric titrators, UV-Vis spectrophotometers, etc., and we can carry out the detailed analyses of average MW, OH number, moisture, color, viscosity, and purity, ‍‌‍‍‌etc. Pharmaceutical‍‌‍‍‌ and cosmetic formulation development is also supported through our services, solubilization performance testing, and long-term storage stability testing, compatibility testing, and viscosity check, which will allow to improve the formulations and increase the efficiency as well as stability of production of a ‍‌‍‍‌product.

Customer Case Study

A pharmaceutical company specializing in topical gel formulations encountered issues during the R&D of a new product: the active ingredient dissolved slowly, and slight crystallization occurred after long-term storage, causing the product to fail stability tests. Following a technical assessment, we recommended the use of high-purity PEG-400 as a solubilizer. After implementation, the dissolution efficiency of the active ingredient increased by approximately 30%, the pass rate for stability tests rose by about 25%, and the product development cycle was shortened by roughly 20%. Additionally, filling flowability improved significantly, leading to a 15% increase in production efficiency.

Product Packaging and Transportation

PEG-400 is packaged in 200 kg plastic or steel drums; 1,000 L IBC totes and customized packaging solutions are also available to meet domestic and international shipping requirements. The‍‌‍‍‌ packaging provides good sealing capability and effectively keeps out moisture and contaminants during transit. In addition, all product batches are fully labeled so that warehouse and product tracing processes can be facilitated ‍‌‍‍‌easily. 

Qualifications & Certifications

Certificate Numbers: ZM034125Q43615R0L, ZM034125E43616R0L, ZM034125S43617R0L

Disclaimer: The qualification certificates listed above are held by our long-term manufacturing partners. In‍‌‍‍‌ our role as a supply chain service provider, we handle product quality inspection, coordinate logistics and provide international trade services so that all delivered products satisfy the manufacturer-certified ‍‌‍‍‌benchmarks.

Why Choose Us

Established in 2012, Liaoyang Zhongshi Chemical possesses over 15 years of experience in the chemical solvent supply chain sector. Regarding sourcing, we maintain long-term partnerships with major state-owned enterprises—CNPC, Sinopec, and CNOOC—and have deep strategic ties with three ISO-certified production bases.Our‍‌‍‍‌ annual production capacity is 20,000 tons and 100 tons are always ready in one of our warehouses. It is our pleasure, that we even take minimum size orders of 1 ton and deliver at most 7-day time ‍‌‍‍‌frame.

In terms of quality control, our products originate from factories certified to ISO 9001, ISO 14001, and ISO 45001 standards (Certificate Nos.: ZM034125Q43615R0L, ZM034125E43616R0L, ZM034125S43617R0L). Leveraging CNAS-accredited laboratories, we implement a dual quality control process—factory testing followed by pre-shipment re-inspection—ensuring batch consistency exceeding 99.9%. We provide comprehensive COA and MSDS documentation alongside full-process traceability data. Our products are exported to over 20 countries, with packaging options including drums, IBCs, and ISO tanks; samples are available within 24 hours, and delivery is completed within 7 working days. We also provide a complete set of export documentation—including Dangerous Goods Packaging Certificates, customs declarations, Certificates of Origin, and SGS reports—to ensure smooth customs clearance.

FAQ

1. What are the product purity and average molecular weight?

The average molecular weight is typically controlled between 380 and 420; the product features high purity and a uniform molecular weight distribution.

2. What packaging specifications are available?

Standard packaging consists of 200kg drums; 1,000L IBC totes and customized packaging options are also available. 3. What is the minimum order quantity (MOQ)?

The minimum order is 1 ton; we support sample testing and long-term partnerships.

4. What is the delivery lead time?

Standard orders can generally be shipped within 7 working days.