Propylene glycol USP
Description
Propylene glycol USP is a high-purity grade propylene glycol which is used in pharmaceutical, food, cosmetic & personal care, flavor & fragrance, and a variety of other applications.
TYPICAL PHYSICAL AND CHEMICAL PROPERTIES
| Property | Value |
|---|---|
| Chemical name | 1,2-propanediol |
| Formula | C3H8O2 |
| CAS Number | 57-55-6 |
| Appearance | liquid, clear, colorless, practically odorless, slightly viscous |
| Assay | > 99,8 % (p/p) |
| Water | < 0,2 % (p/p) |
| Boiling point 101,3 kPa (1atm) | 187°C (369°F) |
| Freezing point | < -20°C (< -4°F) (EC Method A1) |
| Specific gravity, 25°C (77°F) | 1.035-1.037 |
| Viscosity, 25°C (77°F) | 48,6 centipoise (mPa.s) |
| Specific heat, 25°C (77°F) | 2,51 J/g°K |
Application
Propylene glycol USP is commonly used in a large variety of applications.
Pharmaceuticals – solvent for active ingredients in oral and topical products
Cosmetics and Personal Care Products – solvent, coupling agent, carrier, emulsion stabilizer, softening agent, viscosity modifier and humectant
Flavors & Fragrances – solvent and extraction solvent
Food – carrier or carrier solvent for colors, emulsifiers, antioxidants and enzymes; humectant and stabilizer in fruits, vegetables and bakery goods (except in Europe)
Propylene glycol USP is also applied in indirect contact food applications, such as a low temperature heat-transfer fluid in the brewing, dairy and ice cream industries and for food storage facilities, an equipment cleaner fluid or a solvent for printing inks.
Animal Feed – emulsifying agent
It must be emphasized that users are responsible for consulting country-specific regulations for details of approved use.
STORAGE AND HANDLING
Store at ambient temperatures in closed containers. Keep away from sunlight and other sources of UV light.
SHELF LIFE
Propylene Glycol USP is stable for at least two years under a properly storage and handling.
