Polyethylene Glycol (PEGs)
| Formula: | H–(O–CH₂–CH₂)ₙ–OH |
| CAS Number: | 25322-68-3 (average for commercial PEGs) |
| EC Number (EINECS): | 232-674-9 |
| HS Code: | 39072000 |
| UN Number: | Not classified as dangerous goods |
| IUPAC Name: | Poly(oxyethylene) glycol |
| Also Known As: | PEG; Polyethylene Oxide (low molecular weight) |
| Molecular Weight, g/mol: | Variable (200–20,000 depending on grade) |
Typical Specifications
| Appearance: | White to off-white waxy solid / powder |
| Odor: | Odorless |
| Melting Point, °C: | 50–65 (depending on MW) |
| Boiling Point, °C: | Decomposes >300 |
| Density, g/cm³ (at 20°C): | 1.12–1.23 (depending on MW) |
| Flash Point, °C: | Not flammable |
| Solubility: | Soluble in water, alcohols, and some organic solvents |
| pH (1% solution): | 6–8 |
| Purity, %: | ≥99.0 |
| Grades Available: | PEG 200, 400, 600, 1000, 1500, 4000, 6000, 20,000 |
| Packaging: | 25kg bags, 50kg drums, bulk IBC |
Applications / Uses
Primary Applications
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Solvent, plasticizer, and binder in pharmaceuticals and cosmetics
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Humectant and thickening agent in personal care formulations
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Intermediate in chemical synthesis and polymer production
Secondary Applications
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Surfactant and dispersant in industrial formulations
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Used in detergents, coatings, and textile applications
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Laboratory reagent for biochemistry and molecular biology
End Industries Served: Pharmaceuticals, Cosmetics, Personal Care, Chemicals, Textiles, Laboratory, Coatings, Detergents
Safety & Handling Information
Hazard Class (GHS): Not classified as hazardous; may cause mild irritation
Hazard Statements (H-Codes):
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H319: Causes serious eye irritation (in some concentrated forms)
Precautionary Statements (P-Codes):
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P280: Wear protective gloves/eye protection
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water
Storage Conditions
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Store in cool, dry, ventilated place
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Keep containers tightly closed
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Avoid moisture and contamination
Transport Information
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ADR/RID: Not classified as dangerous goods
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IMDG: Not classified as dangerous goods
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IATA: Not classified as dangerous goods