The simplest member of the class of propane-1,3-diols, consisting of propane in which one hydrogen from each methyl group is substituted by a hydroxy group. A colourless, viscous, water-miscible liquid with a high (210°C) boiling point, it is used in the synthesis of certain polymers and as a solvent and antifreeze


Melting Point-32 °C
Boiling Point214 °C
Flash Point>110 °C
Density1.053 g/mL at 25 °C
FormsLiquid (clear)

Uses and Applications

Key applications

  • Preservative
  • Solvents
  • Skin care products
  • Personal care
  • Cosmetic products
  • Moisturizing products


  • Cleaning
  • Coatings & Construction
  • Cosmetics

Synonyms: 1,3-dihydroxypropane I 1,3-propylene glycol I 2-(hydroxymethyl)ethanol

Chemical Formula: C3H8O2

CAS Number: 504-63-2