polyethylene glycol CAS 25322-68-3,polyethylene glycol,CAS 25322-68-3
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Polyethylene glycol (PEG) is a non-ionic polymer formed by the polymerization of ethylene oxide. It has good water solubility, chemical stability and biocompatibility. It is widely used in many industries such as medicine, cosmetics, food, chemicals, textiles, and papermaking, and has a wide range of uses and market demand.
25322-68-3
HO–(CH₂CH₂O)ₙ–H
200 ~ 8000
500-038-2
| CAS | 25322-68-3 |
| Molecular formula | HO–(CH₂CH₂O)ₙ–H |
| Molecular weight | 200 ~ 8000 |
| EIENCS | 500-038-2 |
| Form | / |
| Melting point | / |
| boling point | 250–300 °C |
| Density | 1.1–1.2 g/cm³ |
| Solubility | Soluble in water, alcohol, acetone, glycerin and other polar solvents |
| PKA | / |
| Color | Colorless and transparent |
| Storage temp | 15–30 °C |
Polyethylene glycol (PEG) is a nonionic polymer derived from the polymerization of ethylene oxide. It exhibits excellent water solubility, chemical stability, and biocompatibility. Its physical state varies depending on its molecular weight: low-molecular-weight products are typically colorless, transparent liquids, while high-molecular-weight products are white, waxy solids or flaky crystals. PEG is widely used in a variety of industries, including pharmaceuticals, cosmetics, food, chemicals, textiles, and papermaking, enjoying broad applications and market demand.
Pharmaceutical Industry: Used as a matrix, emulsifier, tablet lubricant, and sustained-release material (e.g., suppository base, ointment base)
Cosmetics: Used as a moisturizer and softener in lotions, creams, and conditioners
Food Additive: Food-grade PEG is used as a thickener, carrier, or solvent (must comply with FDA/GB standards)
Industrial Applications: Used in lubricants, antifreeze, inks, resins, and plastic processing aids
Biochemistry: PEG modification technology is widely used in experiments such as protein purification, buffer adjustment, and cell fusion.
PEG is generally considered to have low toxicity and minimal irritation and is widely used in daily chemical and pharmaceutical products.
High molecular weight PEG is almost non-absorbable, but avoid long-term, high-volume ingestion.
Store in a sealed container in a cool, dry place, away from heat and direct sunlight.
Practice industrial hygiene when handling and avoid contact with eyes and inhalation of dust (solid).
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