Mono Propylene Glycol

Monopropylene Glycol (CAS 57-55-6) – Cosmetic, Pharmaceutical, Food & Industrial Grade

Monopropylene Glycol (MPG) is a high-purity, versatile organic compound widely used in cosmetics, pharmaceuticals, food processing, and industrial manufacturing. It is a clear, colorless, hygroscopic liquid known for its excellent solvent, humectant, and carrier properties.

Monopropylene Glycol is valued for its low toxicity, chemical stability, and compatibility with a wide range of active ingredients, making it one of the most commonly used functional raw materials across multiple industries.

Chemical Information

Chemical Name: Monopropylene Glycol (1,2-Propanediol)

Molecular Formula: C₃H₈O₂

Molecular Weight: 76.09 g/mol

CAS Number: 57-55-6

Appearance: Clear, colorless, viscous liquid

Odor: Odorless

Solubility: Miscible with water, alcohol, and many organic solvents

Purity: Typically ≥ 99.5%

Key Applications of Monopropylene Glycol

Cosmetic & Personal Care Industry

Monopropylene Glycol is extensively used in:

Moisturizers and creams
Lotions and serums
Hair care formulations
Deodorants and roll-ons
Fragrances and perfumes
Makeup products

It functions primarily as a humectant, helping retain moisture in the skin, and as a solvent and penetration enhancer to improve the stability and absorption of active ingredients.

Pharmaceutical Applications

Monopropylene Glycol is widely used in pharmaceutical formulations as:

A solvent for active pharmaceutical ingredients (APIs)
A carrier in oral, topical, and injectable formulations
A stabilizing and moisture-retaining agent
A component in cough syrups and elixirs

Due to its safety profile and regulatory acceptance, it is commonly utilized in both prescription and over-the-counter products.

Food & Beverage Industry

Food-grade Monopropylene Glycol is used as:

A food additive (E1520)
A flavor carrier
A humectant in baked goods
A solvent for food colorings and additives
A moisture stabilizer

It helps maintain texture, extend shelf life, and ensure uniform distribution of flavors.

Industrial Applications

In industrial settings, Monopropylene Glycol functions as:

An antifreeze and heat transfer fluid component
A raw material in unsaturated polyester resins
A solvent in paints, coatings, and inks
A component in de-icing solutions
A plasticizer and chemical intermediate

Its low volatility and stability make it suitable for a wide range of manufacturing processes.

Storage & Handling

Store in a cool, dry, well-ventilated area
Keep container tightly sealed to prevent moisture absorption
Protect from contamination
Use appropriate personal protective equipment during handling

Monopropylene Glycol remains an essential multifunctional raw material across cosmetic, pharmaceutical, food, and industrial sectors due to its safety, versatility, and consistent performance in formulation systems.