Propylene Glycol
| Formula: | C₃H₈O₂ |
| CAS Number: | 57-55-6 |
| EC Number (EINECS): | 200-338-0 |
| HS Code: | 29053200 |
| UN Number: | Not regulated as hazardous for transport |
| IUPAC Name: | Propane-1,2-diol |
| Also Known As: | 1,2-Propanediol; Methyl Ethylene Glycol; PG |
| Molecular Weight, g/mol: | 76.09 |
Typical Specifications
| Appearance: | Colorless, clear, viscous liquid |
| Odor: | Practically odorless, slightly sweet |
| Melting Point, °C: | -59 |
| Boiling Point, °C: | 188.2 |
| Density, g/cm³ (at 20°C): | 1.036 |
| Flash Point, °C: | 99 (closed cup) |
| Refractive Index (20°C): | 1.431–1.433 |
| Solubility: | Miscible with water, alcohols, acetone |
| Vapor Pressure (at 20°C): | 0.08 mmHg |
| Purity, %: | ≥99.5 |
| Grades Available: | USP/Pharma, Food, Industrial, Technical |
| Packaging: | 200kg drums, 1000kg IBC, bulk ISO tanks |
Applications / Uses
Primary Applications
-
Humectant and solvent in food & beverages (E1520)
-
Solvent and stabilizer in pharmaceutical formulations
-
Moisturizer and emollient in cosmetics and personal care
Secondary Applications
-
Carrier fluid in flavors, fragrances, and colors
-
Heat transfer fluid and antifreeze blends
-
Component in resins, coatings, and de-icing solutions
End Industries Served: Food & Beverages, Pharmaceuticals, Cosmetics, Personal Care, Chemicals, Industrial Fluids
Safety & Handling Information
Hazard Class (GHS): Generally recognized as safe (GRAS); not classified as hazardous in most jurisdictions
Hazard Statements (H-Codes):
-
H319: May cause eye irritation
-
H335: May cause respiratory irritation (aerosol/mist)
Precautionary Statements (P-Codes):
-
P280: Wear protective gloves/eye protection
-
P261: Avoid breathing mist/vapors
-
P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if present
Storage Conditions
-
Store in tightly closed containers
-
Keep in a cool, dry, ventilated area
-
Protect from contamination and direct sunlight
Transport Information
-
ADR/RID: Not classified as dangerous goods
-
IMDG: Not classified as dangerous goods
-
IATA: Not classified as dangerous goods