1,2-Propanediol
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Molecular Structure
Detailed Description
Alias: (+ / -) -1-Glycerol, polymer-supported; ethane-1,2-diol - prop-1-ene (1:1);1,2-Dihydroxypropane; alpha -Propylene glycol; Propylene glycol
Molecular formula: CH2OHCHOHCH3 (C3H8O2)
Molecular weight: 76.09
CAS number: 57-55-6
EINECS:200-338-0
Appearance: colorless viscous liquid absorbent and stable, almost tasteless and odorless.
Boiling point: 188.2 °C
Melting point: 59 °C
Use: propylene glycol unsaturated polyester, epoxy resin, polyurethane resin and important raw materials, this aspect of the total amount of propylene glycol about 45% of consumption, such a large number of unsaturated polyester used in surface coatings and reinforced plastics. Propanediol viscous and good moisture absorption, and non-toxic, thus in the food, pharmaceutical and cosmetic industry is widely used as an absorbent, antifreeze, lubricants and solvents. In the food industry, propylene glycol and propylene glycol fatty acid formation of fatty acid esters, mainly used as a food emulsifier; propylene glycol is a good solvent seasoning and pigment. Propylene glycol is commonly used in the pharmaceutical industry for the manufacture of various types of ointment, cream of solvent, softener and the excipient, the propylene glycol and various spices has good mutual solubility, therefore is also used in cosmetics solvent and softener and so on. Propylene glycol is also used for tobacco humidification agent, agent, lubricating oil food processing equipment, and food labeling ink solvent. Propylene glycol aqueous solution is effective antifreeze agent.
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