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Propylene Glycol (Technical)

CAS : 57-55-6

Propylene Glycol (Technical)


Propylene glycol (IUPAC name: propane-1, 2-diol) is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste. Its chemical formula is CH3CH(OH)CH2OH. Containing two alcohol groups, it is classed as a diol. It is miscible with a broad range of solvents, including water, acetone, and chloroform. In general, glycols are non-irritating and have very low volatility.


Propylene Glycol (Technical)


Appearance Colourless liquid
Odor odorless
Density 1.036 g/cm3
Melting point −59 °C (−74 °F; 214 K)
Boiling point 188.2 °C (370.8 °F; 461.3 K)
Solubility in water Miscible
Solubility in ethanol Miscible
Solubility in diethyl ether Miscible
Solubility in acetone Miscible
Solubility in chloroform Miscible


It is used to absorb extra water and maintain moisture in certain medicines, cosmetics, or food products. It is a solvent for food colors and flavors, and in the paint and plastics industries. Propylene glycol is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions. 



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