Polypropylene Glycol CAS#25322-69-4

Wide Solubility and Compatibility: Exhibits excellent solubility flexibility, dissolving in water at lower molecular weights and in oils, hydrocarbons, alcohols, ketones, and esters at higher molecular weights.


Chemically Reactive End Groups: Features hydroxyl groups at both molecular ends, enabling esterification and etherification for diverse chemical modifications.


Stable and Safe Physical Properties: Non-volatile and non-corrosive, ensuring safe handling and stable performance in various industrial applications.


Broad Industrial Application Range: Widely used as a solvent and as a key raw material in the production of resins, emulsifiers, lubricants, plasticizers, and related formulations.



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Product Description

Product Description of ‌Polypropylene Glycol CAS#25322-69-4

Poly(propylene glycol) (PPG, formula H(C₃H₆O)ₙOH) is a colorless to pale yellow viscous liquid, non-volatile and non-corrosive.
Commercial grades have molecular weights of 400–2050. Low-molecular-weight PPG is water-soluble, while high-molecular-weight grades are slightly water-soluble but readily dissolve in oils, hydrocarbons, aliphatic alcohols, ketones and esters.
With terminal hydroxyl groups, it undergoes esterification to form mono- or diesters. Its monoesters serve as non-ionic surfactants and can further react with alcohols to produce ethers.
PPG acts as a solvent for vegetable oils, resins and paraffin wax, and is widely used in manufacturing alkyd resins, emulsifiers, demulsifiers, lubricants and plasticizers. It is synthesized via condensation of propylene oxide and propylene glycol under high pressure or with acidic catalysts.


Product Application of Polypropylene Glycol CAS#25322-69-4

Poly(propylene glycol) (PPG) is widely used in polymer science and organic chemical industry, serving as professional reagent, biochemical reagent and chemical raw material across various research and industrial fields.
Available in grades including PPG-400, PPG-1000, PPG-2000 and PPG-4000, it is applied in food additives, defoamers, pesticide formulations and cosmetic raw materials.
It also functions as an active pharmaceutical ingredient and intermediate for pharmaceuticals, pesticides and dyes, as well as a solvent and organic raw material for alcohol-based chemicals and other organic products in multiple industrial applications.


Product Information

Parameters


Melting point-40 °C
Boiling point>300 °C
density1.01 g/mL at 20 °C
vapor density>1 (vs air)
Pour Point-26
Pour Point-45
vapor pressure<0.01 mm Hg ( 20 °C)
refractive indexn20/D 1.451
Fp230 °C
solubilityH2O: <0.01 % (w/w) at 25 °C
formViscous Liquid
Specific Gravity1.005
colorWhite to light gray
Water SolubilityPRACTICALLY INSOLUBLE
FreezingPoint-25
FreezingPoint-40
Stability:Stable. Substances to be avoided include strong oxidizing agents.
LogP0.01 at 25℃
NIST Chemistry ReferencePolypropylene glycol 425(25322-69-4)
EPA Substance Registry SystemPolypropylene glycol (25322-69-4)
Safety Statements24/25
WGK Germany1
RTECSTR5250000
TSCAYes
HS Code39072090
Hazardous Substances Data25322-69-4(Hazardous Substances Data


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FAQ

Q1: Is Huafeng Chemical a manufacturer or a trader?
A: We are a professional service provider specializing in chemical foreign trade. Rather than being limited to the products of a single factory, we leverage the chemical industry cluster in Shandong Province to integrate production resources from multiple high-quality manufacturers. This allows us to offer a wide range of sourcing options—covering various product categories and origins—instead of simply pushing a single product. Furthermore, our core competitiveness lies in our professional foreign trade services (covering documentation, logistics, and regulatory compliance), ensuring a smooth and worry-free procurement process for you.


Q2: How is the security of my transaction guaranteed when working with Huafeng Chemical?
A: We strictly adhere to international trade rules (Incoterms® 2020) and accept various payment methods, such as Letters of Credit (L/C) and Telegraphic Transfers (T/T). For new clients, we support small-batch trial orders and can clearly define arbitration clauses and applicable laws within the contract. Additionally, we maintain a robust risk management system to help you mitigate common trade risks, such as exchange rate fluctuations, shipping delays, and document discrepancies.


Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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