BDO is the short name of 1,4-Butanediol, it is a kind of colorless viscous oil-like liquid, combustible and can mixing with water. With freezing point of 20.1 Grado C, boiling point of 228 Grado C,171 Grado C(13.3kPa),120 Grado C(1.33kPa),86 Grado C(0.133kPa, the relative density of 1.0171(20/4 Grado C). The index of refraction is 1.461, flash point is 121 Grado C. …