PROPYLENE GLYCOL
PROPYLENE GLYCOL
Chemical formula: C3H8O2
International name: PROPYLENE GLYCOL
Synonym: 1,2-propanediol, monopropylene glycol, 1,2-dioksipropan, propanediol
CAS No: 57-55-6
Qualifications: Imp.
Appearance: colorless oily liquid
Storage: Store in a dry, well-ventilated place
Specification
PROPYLENE technical 99.5%
| № | Item | Result |
|---|---|---|
| 1 | Purity, % | 99.75 |
| 2 | Moisture Content, % | 0.035 |
| 3 | Color, APHA | 5 |
| 4 | Appearance | Colorless and transparent liquid without foreign material |
Specification
Propylene Glycol USP
| № | Item | Result |
|---|---|---|
| 1 | Color, APHA | 5 |
| 2 | Content, % | 99,87 |
| 3 | Moisture, % | 0,06 |
| 4 | Specific gravity, 20/20o C | 1,035 |
| 5 | Free Acid (CH3OOH), ppm | 14 |
| 6 | Distillation range >95% | 185-188 |
| 7 | Index of refraction | 1,433 |
| 8 | Chloride, % | 0,002 |
| 9 | Sulfate, % | 0,003 |
| 10 | Heavy metals, ppm | 0,63 |
| 11 | Organic volatile impurity chloroform, µg/g | Non-detected |
| 12 | Organic volatile impurity 1.4 dioxane, µg/g | Non-detected |
| 13 | Organic volatile impurity methylene chloride, µg/g | Non-detected |
| 14 | Organic volatile impurity trichloroethylene, µg/g | Non-detected |
Application
Propylene glycol and glycerol as well as practically non-toxic in small and medium doses. Propylene glycol is a feedstock for various chemical compounds. From it are acetol, methylglyoxal, dimethyl, lactic acid, and various drugs. A large proportion of propylene produced is consumed for the production of saturated and unsaturated polyester resins.
Propylene glycol is used as well:
- in the manufacture of plastics,
- in the manufacture of cosmetics, as a water-retaining agent, solvent, humectant and essential oils,
- in the pharmaceutical industry
- in the food industry as a component in itself as a food sweetener.
Propylene glycol solutions are used as refrigerants in refrigeration and heat transfer in heating systems in enterprises associated with the manufacture and storage of food, etc.