1,6-Hexanediol, also known as Hexamethylene glycol, 1,6-Dihydroxyhexane, 1,6-Hexylene Glycol, 1,6-HDO is a white waxy solid at room temperature, the state is shown below. When the temperature is higher than the melting point (42 ℃) above the colourless transparent liquid, boiling point 250 ℃, solubl