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Propylene Glycol
Appearance: Transparent liquid
Application: Skin care products, hair dye, toothpaste, soap
Propylene glycol is a chemical agent that is miscible with water, ethanol and a variety of organic solvents. Propylene glycol can be used as the raw material of unsaturated polyester resin. It can be used as a wetting agent in combination with glycerin or sorbitol in cosmetics, toothpaste and soap. It is used in hair dye as a moisture conditioner, hair levelling agent, and also as an antifreeze.
| Property | Details |
| Chemical Name | Propylene glycol |
| CAS Number | 57-55-6 |
| Molecular Formula | CH3CH(OH)CH2OH |
| Appearance | Transparent liquid |
| Odor | Odorless |
| Boiling Point at 760 mmHg (°C) | 188-189°C |
| Melting Point (°C) | <121-128°C |
| Freezing Point (°C) | -59°C |
| Vapor Density (Air=1) | 2.62 |
| Liquid Density g/cm³ (20°C) | 1.03 |
| Dynamic Viscosity (25°C) (mPa·s) | 43.4 |
| Storage | Store in a cool, dry place, away from sunlight |
| Shelf Life | 2 years under proper storage conditions |