Description
l Propylene Glycol is an organic compound. It appears as a colorless, transparent, and viscous liquid. It has no pungent odor, with a slightly sweet taste and a hint of spiciness. Under normal temperature and in ordinary air conditions, Propylene Glycol is stable and has hygroscopicity, capable of absorbing moisture in the surrounding air. Its boiling point is approximately 187.3 °C, and its freezing point is about -60 °C. Propylene glycol is highly soluble in water and can be miscible with water in any proportion. It can also be freely mixed with various organic solvents such as ethanol, insoluble in most oil-based substances. Within Its aqueous solution is neutral, with a pH value close to 7. Propylene glycol is mainly produced through the propylene oxide hydration method, that is, by reacting propylene oxide with water under the action of a catalyst.
Applications
Propylene glycol is a multifunctional food additive and pharmaceutical excipient renowned for its versatility and safety. It serves as a solvent, humectant, antifreeze agent, and plasticizer, making it indispensable across various industries.
Food Industry:
l Solvent for Flavors and Pigments:
Ensures even dispersion of flavors and colors in food products.
l Humectant in Baked Goods:
Prevents moisture loss in bread, cakes, and pastries, extending shelf life and maintaining freshness.
l Antifreeze Agent in Frozen Foods:
Lowers freezing points, inhibits ice crystal formation, and preserves food texture.
l Plasticizer in Candies:
Enhances flexibility and optimizes the mouthfeel of confectionery products.
Dairy Products:
l Adjusts viscosity and improves texture in yogurt and cheese.
l Inhibits microbial growth, contributing to preservation and shelf stability.
Pastry Fillings and Jams:
l Prevents sugar crystallization, maintaining a smooth texture and appealing appearance.
Beverage Industry:
l Acts as a solvent for flavor compounds in sports drinks, fruit juices, and other beverages.
l Stabilizes aroma components due to its low volatility, ensuring a consistent and enhanced flavor profile.
Specification
ITEM | STANDARD |
APPEARANCE | Colorless clear viscous liquid |
ASSAY | Typically ≥99.5% |
SPECIFIC GRAVITY | 1.038 - 1.042 at 25°C |
REFRACTIVE INDEX | 1.430 - 1.433 at 25°C |
pH (10% AQUEOUS SOLUTION) | 4.0 - 7.0 |
MOISTURE | 0.2 % MAX |
RESIDUE ON IGNITION | 0.05% MAX |
HEAVY METALS | 10PPM MAX |
LEAD | 1PPM MAX |
ARSENIC | 1PPM MAX |
Packaging
- PACKING: 25KG NET / BAG
- STORAGE AND TRANSPORT: IN DRY AND COOL NORMAL TEMPERATURE
- SHELF LIFE: 2-3 YEARS