A butanediol that is butane in which one hydrogen of each of the methyl groups is substituted by a hydroxy group. A colourless, water-miscible, viscous liquid at room temperature (m.p. 16°C) with a high boiling point (230°C), it is mainly used for the production of other organic chemicals, particularly the solvent oxolane (also known as tetrahydrofuran or THF).


Melting Point20 °C
Boiling Point230 °C
Flash Point135 °C
Density1.017 g/mL at 25 °C

Uses and Applications

Key applications

  • Solvents


  • Polymers
  • Rubber

Synonyms: 1,4-butylene glycol I 1,4-dihydroxybutane I 1,4-tetramethylene glycol

Chemical Formula: C4H10O2

CAS Number: 110-63-4