Propylene glycol is often used in electronic cigarettes to improve flavour and create a better throat hit. A bottle of flavored 'e-liquid' for 'vaping' shows Propylene glycol as the main ingredient. Propylene glycol is commonly used to deice aircraft.

 Propylene glycol is also used in various edible items such as coffee-based drinks, liquid sweeteners, ice cream, whipped dairy products and soda.

Vaporizers used for delivery of pharmaceuticals or personal-care products often include Propylene glycol among the ingredients. Propylene glycol is used as a solvent in many pharmaceuticals including oral, injectable and topical formulations, such as for diazepam  and lorazepam which are insoluble in water. Certain formulations of artificial tears, such as Systane, use propylene 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 deicing fluid. Water-propylene glycol mixtures dyed pink to indicate the mixture is relatively nontoxic are sold under the name of RV or marine antifreeze.

Propylene glycol is frequently used as a substitute for ethylene glycol in low toxicity, Environmentally friendly automotive antifreeze. It is also used to winterize the plumbing systems in vacant structures.

Propylene glycol is used in veterinary medicine as an oral treatment for hyperketonaemiain Ruminants. Glucose, which can be used in non-ruminants for this purpose, is not effective due to its consumption by the resident microbes of therumen.

Propylene glycol is partially metabolized in the rumen to propianate which can be Used as an energy source. the remainder is absorbed into the bloodstream and used by the liver for gluconeogenesis.

 

	C3H8O2
Purity	99.95%
Appearance	Colorless, Clear, Hygroscopic Liquid
Class	General Cargo
CAS NO.	57-55-6
H.S Code	29053200
EINECS NO.	200-338-0
Moisture	0.2
Free Acid ppm	75
Ash ppm	80
Boiling Point	188.2
Molecular Weight	76.09
BRN NO.	1340498
Relative Density	1.0362(20, 4)
Refraction	1.4329
Flashing Point	98.9(Close)/107(Open)
Toxicity	Low
Melting Point	-60