Propylene Glycol Applications

Forty-five percent of propylene glycol produced is used as actinic feedstock for the assembly of unsaturated polyester resins. In this regard, propylene glycol reacts with a compound of unsaturated maleic anhydride and isophthalic acid to accord a copolymer. This partially unsaturated polymer undergoes added crosslinking to crop thermoset plastics. Related to this application, propylene glycol reacts with propylene oxide to accord oligomers and polymers that are used to aftermath polyurethanes.Propylene glycol is used as a humectant (E1520), solvent, and bactericide in food and for tobacco products. It is aswell one of the above capacity (<1–92%), forth with glycerol, of the e-liquid and cartridges used in cyberbanking cigarettes area it is aerosolized in the atomizer. Propylene glycol is aswell used in assorted comestible items such as coffee-based drinks, aqueous sweeteners, ice cream, aerated dairy articles and soda.Vaporizers used for supply of pharmaceuticals or personal-care articles generally cover propylene glycol a part of the ingredients. Propylene glycol is used as a bread-and-butter in abounding pharmaceuticals, including oral, injectable and contemporary formulations, such as for diazepam and lorazepam which are baffling in water. Certain formulations of bogus tears, such as Systane, use proplyene glycol as an ingredient.

Like ethylene glycol, propylene glycol is able to lower the freezing point of water, and so it is used as aircraft de-icing fluid. Water-propylene glycol mixtures absolute blush to announce the compound is almost controllable are awash beneath the name of RV or abyssal antifreeze. Propylene glycol is frequently used as a acting for ethylene glycol in low toxicity, environmentally affable automotive antifreeze. It is aswell used to winterize the accouterments systems in abandoned structures.

Propylene glycol is used in veterinary anesthetic as an articulate analysis for hyperketonaemia in ruminants. Glucose, which can be used in non-ruminants for this purpose, is not able due to its burning by the citizen bacilli of the rumen. Propylene glycol is partially metabolized in the rumen to propionate which can be used as an activity source. The butt is captivated into the bloodstream and used by the alarmist for gluconeogenesis.