Propylene glycol CAS No.57-55-6
Agrochemicals 2025-03-02
Propylene Glycol
CAS No.: 57-55-6 | FEMA No.: 2940
1. Chemical Identification
| Property | Specification |
|---|---|
| IUPAC Name | Propane-1,2-diol |
| Molecular Formula | CH₃CH(OH)CH₂OH |
| Molecular Weight | 76.09 g/mol |
| Beilstein Number | 1340498 |
| EC Number | 200-338-0 |
Synonyms:
1,2-Propanediol, PG, Methyl ethyl glycol
2. Physical Properties
| Parameter | Value |
|---|---|
| Appearance | Colorless viscous liquid |
| Density | 1.036 g/cm³ at 25°C |
| Boiling Point | 188.2°C |
| Melting Point | -59°C |
| Solubility | Miscible with water and most organic solvents |
3. Food Industry Applications
- Functional Roles:
✓ Anti-caking agent
✓ Antioxidant
✓ Humectant
✓ Flavoring agent
✓ Emulsifier
✓ Stabilizer
✓ Thickener - Common Uses:
✓ Baked goods
✓ Dairy products
✓ Beverages
✓ Processed foods
4. Safety Information
Regulatory Status:
- FDA 21 CFR 184.1666 – Generally Recognized As Safe (GRAS)
- EU E-number E1520
Safety Profile:
- Oral LD₅₀ (rat): 20 g/kg
- Skin Irritation: Mild
- Eye Irritation: Moderate
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