Paper
Glycerol to Propylene Glycol Under the supervision Dr
Published 2018 · DOI · Ali Abd Alameer
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Abstract
Propylene glycol (also called 1,2-propanediol) is an incredibly versatile compound that is used in a number of industrial applications that range from transportation andconstruction to food and pharmaceutical production. Pharmaceutical (USP) grade propylene glycol is at least 99.5% pure by weight and is used in health-sensitive products such as food, personal consumer goods, cosmetics, and pharmaceuticals. Due to its highly sensitive applications, USP grade propylene glycol is regulated carefully by the FDA and producers must comply with strict regulations to ensure the quality and purity of their product. Industrial grade propylene glycol is at least 95% pure and is an important player in the transportation industry as it is used in aircraft de-icer, antifreeze, and brake fluid. It is also used in the construction industry as the primary component in unsaturated polyester resins (UPRs) that are used to make fiberglass reinforced plastics. Propylene glycol’s chemical neutrality and nonreactivity make it very useful as a solvent. It can be used as an emulsifier to stabilize mixtures of two or more immiscible liquids. This often occurs in the preparation of cosmetics, where oil and water must be mixed to produce creams or lotions, and in the preparation and processing of some foods. It is a useful excipient, a pharmacologically inactive substance that acts as a carrier for the active ingredients in medication. It can be used for boiling point elevation or freezing point reduction, which makes it an effective de-icer and antifreeze solution.
Propylene glycol is a versatile compound used in various industrial applications, including transportation, construction, and food and pharmaceutical production.
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