Description

Propylene Glycol CAS NO 57-55-6 is a versatile, high-purity organic compound belonging to the class of diols. It serves as a fundamental building block and performance additive across numerous industries due to its excellent solvent properties, humectancy, and low toxicity. This chemical is essential for manufacturers in pharmaceuticals, food production, cosmetics, and industrial applications seeking a reliable, high-quality ingredient. Its ability to absorb and retain moisture makes it particularly valuable in formulations requiring consistent stability and shelf life.

Application

• Pharmaceuticals: Used as a solvent, humectant, and carrier in oral, topical, and injectable drug formulations.
• Food & Beverage (FCC Grade): Functions as a humectant, solvent, and preservative carrier in flavorings, colorings, and baked goods.
• Cosmetics & Personal Care: A key ingredient in lotions, creams, deodorants, and toothpaste for its moisturizing and solvent properties.
• Industrial Fluids: Acts as a base fluid or additive in antifreeze, de-icing solutions, and hydraulic fluids.
• Chemical Intermediates: A crucial raw material for the synthesis of unsaturated polyester resins, plasticizers, and other specialty chemicals.
• Animal Feed: Employed as a pelletizing aid and humectant to maintain feed quality and prevent caking.
• Tobacco Industry: Used as a humectant to control moisture content and maintain the freshness of tobacco products.
• Liquid Detergents & Cleaners: Serves as a solvent and viscosity modifier in various cleaning formulations.

Basic Information

Item	Details
Product Name	Propylene Glycol
CAS No.	57-55-6
Molecular Formula	C3H8O2
Molecular Weight	76.09 g/mol
Synonyms	1,2-Propanediol; 1,2-Dihydroxypropane; Methyl Ethylene Glycol; Propane-1,2-diol; Sident® 8; Dowfrost®; USP Propylene Glycol; Food Grade Propylene Glycol
EINECS	200-338-0

Quality Control

Our Propylene Glycol is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. We offer grades compliant with major international pharmacopeial standards, including USP, EP, and FCC, meeting the stringent requirements of pharmaceutical, food, and cosmetic applications. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles, available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Clear, Colorless, Viscous Liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.5%
Water Content (KF)	≤ 0.2%
Specific Gravity (20/20°C)	1.035 - 1.040
Refractive Index (20°C)	1.431 - 1.435
Heavy Metals (as Pb)	≤ 5 ppm
Residue on Ignition	≤ 0.005%
Chloride	≤ 5 ppm
Sulfate	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.