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57-55-6 is the CAS number of Propylene Glycol. Here is a detailed description of propylene glycol:

Basic information

• Alias: 1, 2-propylene glycol, methyl glycol

• Molecular formula:

• Molecular weight: 76.09

Physical and chemical properties

Appearance: Colorless, odorless, hygroscopic viscous liquid with sweet taste.

• Boiling point: 188.2℃

• Melting point: -59℃

• Density: 1.036g/cm³

• Solubility: miscible with water, ethanol and a variety of organic solvents, can be dissolved in ether, but can not be miscible with petroleum ether, chloroform and other organic solvents.

Main use

• Food industry: Propylene glycol is a commonly used food additive, can be used as a moisturizer, solvent, stabilizer, etc., used in cakes, candies, beverages and other foods, help to maintain the moisture of food, extend the shelf life, improve the taste.

• Pharmaceutical industry: as a drug carrier and solvent, it can be used to manufacture various pharmaceutical preparations, such as oral liquid, injection, ointment, etc. It can also be used as a moisturizer in cosmetics to keep skin hydrated and prevent dryness.

• Industrial field: It is an important raw material for the production of unsaturated polyester resin, epoxy resin, polyurethane resin, etc. It can also be used as antifreeze, heat carrier and hydraulic oil additives to improve the performance of these substances.

security

• Propylene glycol is generally considered safe for appropriate use. However, in high concentrations or long-term exposure, it may produce certain irritation and toxicity to the human body. It may cause mild irritation and allergic reactions to the skin and irritation to the eyes. If you ingest a large amount of propylene glycol, it may cause damage to the gastrointestinal tract, liver, nausea, vomiting, diarrhea and other symptoms.