Propylene glycol
Introduction:
Propylene glycol (Propylene Glycol), with the chemical formula C₃H₈O₂, is a colorless, odorless, viscous organic compound widely used in food, medicine, cosmetics and industrial fields.
Specifications:
| Items | Specification |
|---|---|
| Appearance | Colorless Transparent Liquid |
| Melting point | -60 °C |
| Boiling point | 187 °C |
| Purity | 99.5% 99.8% 99.9% |
| Packing | Iron Drum; Flexitank |
| EINECS No. | 200-338-0 |
| CAS No. | 57-55-6 |
Physical properties:
Appearance: colorless, transparent and viscous liquid.
Melting point: about -59°C.
Boiling point: about 188°C.
Solubility: miscible with water, ethanol, acetone, etc., slightly soluble in ether.
Density: about 1.04 g/cm³ (25°C).
Chemical properties:
Hygroscopicity: strong hygroscopicity, easy to absorb moisture in the air.
Stability: chemical properties are stable and not easy to decompose at room temperature.
Reactivity: can participate in reactions such as esterification and etherification.
Main uses:
Food industry: as a humectant, stabilizer, solvent, used in beverages, baked goods, etc.
Pharmaceutical industry: used as drug solvent and moisturizer for oral liquid and injection.
Cosmetics: used as moisturizer and solvent for skin care products, toothpaste, etc.
Industrial applications: used for antifreeze, lubricants, resins, coatings, etc.
Other uses: used for tobacco, e-cigarette liquid, pet food, etc.
Safety:
Toxicity: low toxicity, but high concentrations may irritate the skin and eyes.
Storage: stored in a cool, dry and ventilated place, away from fire and oxidants.
Environmental protection:
Biodegradability: can be degraded by microorganisms.
Environmental impact: emissions need to be controlled during production and use to reduce environmental impact.
Specifications and packaging:
Specifications: industrial grade, food grade, pharmaceutical grade, etc., purity is usually ≥99.5%.
Packaging: 25 kg barrel, 200 kg barrel or as required by customers.





