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Propylene glycol CAS 57-55-6 , also called propane-1,2-diol, is an organic compound with the chemical formula C3H8O2. It is a viscous colorless liquid which is nearly odorless but possesses a faintly sweet taste. Chemically it is classed as a diol and is miscible with a broad range of solvents, including water, acetone, and chloroform.
Propylene glycol is colorless liquid with steady viscosity and good water absorption.It is nearly odorless,uninflammable and almost nontoxic. It can be mixed and solved with alcohol,water and various organic agents.
Specification
| Item | USP grade | Tech grade |
| Content, %min. | 99.50%min. | 99.0%min. |
| Moisture | 0.20%max. | 0.20%max. |
| Density | 1.035-1.041 | 1.035-1.041 |
| Refractive index (25°C) | 1.431-1.435 | 1.426-1.435 |
| Distillation range IBP | 184.0°C min. | 183.0 °C |
| Alkalinity | 0.0020%max. | 0.01%max. |
| Chloride | 0.007%max. | -- |
| Sulphate | 0.006%max. | -- |
| Heavy metal | 5ppm max. | -- |
| Residue on ignition | 0.007%max | -- |
| Oxidizing substance | Not detected | -- |
| Reducing matter | Not detected | -- |
| Organic volatile matter-chloroform | 60 ppm max | -- |
| Organic volatile matter-dioxane | 380 ppm max | -- |
| Organic volatile matter-methylene chloride | 600 ppm max | -- |
| Organic volatile matter-trichloroethylene | 80 ppm max | -- |
| Color (Pt-Co) | 10 max | 16 max |
| IR Test | Complies with USP | -- |
Application
Industrial grade
1) Unsaturated Polyester Resins
2) Engine Coolants and Antifreeze
3) Hydraulic and Brake Fluid
4) Aircraft Deicing Fluid
5) Heat Transfer Fluids
6) Paint and Coatings
7) Liquid Detergents
Pharmaceutical grade (USP)1) Flavors and Fragrance
2) Comestics and Personal Care
3) Food and Flavorings
4) Pet Food and Animal Feed
5) Pharmaceutical Excipient
6) Tobacoo Moisturizing Agent
Packing
215kg/steel drum or plastic drum, 80 drums=17.2mt/20GP
Storage
Tightly closed to prevent from leaking, avoid rain and sunlight, far from fire and heat source. Stored in cool and ventilating places.
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