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Propylene Glycol (PG) CAS 57-55-6

Propylene Glycol (PG) is a widely used organic compound in various industries, with CAS 57-55-6 and a molecular formula of $$C_3H_8O_2$$. It is recognized for its excellent solubility, stability and safety, making it a preferred raw material for global importers and manufacturers.

Product Synonyms

Common synonyms of Propylene Glycol include 1,2-Propanediol, α-Propylene Glycol, Methyl Ethyl Glycol, Methyl Ethylene Glycol, 1,2-Dihydroxypropane, Monopropylene Glycol, and Propane-1,2-diol. These terms are frequently used in international trade and industry communications, helping importers quickly identify the product.

Product Properties & Physical Characteristics

Propylene Glycol is a colorless, clear and viscous liquid under normal temperature and pressure, almost odorless with a slightly sweet taste. It has strong hygroscopicity, easy to absorb moisture from the air, and low volatility, which ensures stable performance during storage and transportation.

Its key physical characteristics include miscibility with water, ethanol, acetone, chloroform and other solvents, non-corrosiveness to metals, and good compatibility with most organic compounds. The melting point of Propylene Glycol is -59°C, boiling point is 188.2°C, and density is 1.036 g/cm³ (25°C), which meets the standard requirements of international industrial and food-grade applications.

Product Specifications (Most Common Grade)

Product Applications

Propylene Glycol has a wide range of applications across multiple industries, making it a high-demand product in international trade:

Food Industry: Used as a humectant, solvent, stabilizer and thickener, it can extend the shelf life of baked goods, candies and beverages, and is recognized as a food additive with E1520 certification by the European Union.

Cosmetics & Personal Care: Serves as a moisturizer and solvent in skin care products, lotions, shampoos and toothpaste, with good permeability and no greasy feeling, helping to maintain skin hydration.

Pharmaceutical Industry: Used as a solvent and preservative for oral and injectable drugs, with low toxicity and no irritation, suitable for various pharmaceutical formulations.

Industrial Field: Applied as an antifreeze, deicer and heat transfer fluid, and also as a raw material for the production of unsaturated polyester resins, which are widely used in automotive parts and building materials.

Animal Feed: Used as an additive to treat hyperketonemia in ruminants, helping to improve feed intake and animal health.

Product Certification & Safety

Propylene Glycol has completed REACH registration (registration number: 01-2119456809) and complies with EU CLP regulations, which is non-hazardous and meets international safety standards. For detailed safety information,MSDS download is available to provide comprehensive guidance for storage, transportation and use.

FAQ

Q1: Is Propylene Glycol safe for use in food and cosmetics?

A1: Yes, it is safe. Propylene Glycol is approved by the FDA and EU as a food additive (E1520) and cosmetic ingredient, with low toxicity and no irritation when used within the specified dosage range.

Q2: What is the storage condition for Propylene Glycol?

A2: It should be stored in a cool, dry and well-ventilated warehouse, away from direct sunlight and high temperature (5-30°C), and should not be mixed with strong oxidants. It is strictly prohibited to freeze to avoid crystallization affecting product performance.

Q3: Does Propylene Glycol have any special transportation requirements?

A3: No special transportation requirements are needed. It can be transported by ordinary chemical liquid transport vehicles, packed in 304 stainless steel tanks or PE barrels, with a stacking height not exceeding 2 layers to prevent packaging deformation and leakage.

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