Propylene glycol 57-55-6

Product name: Propylene Glycol
English alias: 1,2-Propanediol; PG
CAS: 57-55-6
Molecular formula: C3H8O2
Appearance: Colorless, odorless, slightly viscous transparent liquid
Package: 215kg/drum, or IBC drums

What is Propylene Glycol？

Propylene Glycol is a synthetic organic compound widely used as a solvent, humectant, and carrier fluid in various industries including cosmetics, food, and industrial manufacturing. It is miscible with water, acetone, and chloroform, and has hygroscopic properties that make it an effective moisture-retaining ingredient in skincare products. In food processing, it serves as a solvent for food colors and flavors, and is classified as GRAS (Generally Recognized As Safe) by the FDA.

COA:

Test Item	Specification	Result
Appearance	Colorless transparent liquid	Conforms
Density	1.010–1.062	1.0355
Refractive Index	1.431–1.433	1.432
Assay (%)	≥99%	99.56%
Water (% m/m)	≤0.2	0.0025
Residue (mg/kg)	≤50	<10
Heavy Metals (as Pb, mg/L)	Conforms	Conforms
Sulfates (% m/m)	<0.0002	Conforms
Iron (mg/kg)	<1.00	Conforms
Acidity (0.1N NaOH/10mL)	<0.2	Conforms

Application

Propylene Glycol used as a solvent and humectant in personal care products such as lotions, creams, shampoos, and deodorants
Propylene Glycol used in the food industry as a solvent for flavorings, colors, and food additives
Propylene Glycol used as antifreeze in food-grade applications and in the production of e-cigarette liquids
Propylene Glycol serves as a plasticizer and antifreeze agent in industrial and chemical processes

Safety profile

Propylene Glycol is considered safe for use in food, cosmetic, and pharmaceutical applications
It is non-toxic and non-carcinogenic when used appropriately
Overexposure may cause mild skin or eye irritation in sensitive individuals
Inhalation of high concentrations (e.g., from mist or vapor in confined spaces) should be avoided

Storage requirements

Store in a tightly sealed container in a cool, dry, and well-ventilated place
Avoid prolonged exposure to air, moisture, and high temperatures
Keep away from strong oxidizing agents

Transport & Packaging

Propylene Glycol is available in 215 kg steel/plastic drums, and 1000 kg IBC tanks
Transport as a non-hazardous chemical; follow standard chemical handling procedures