CAS 107-88-0

1.3-Butanediol is an organic compound with a molecular formula of C4H10O2, mainly used in the preparation of polyester resin, polyurethane resin, plasticizer, etc., and also used as a humidifier and softener for textiles, paper and tobacco.

Chinese Name: 1,3-Butanediol

Chinese aliases: 1,3-Dihydroxybutane; (±)-1,3-Butanediol

English alias: Butanediol; butane-1,3-diol; (3S)-butane-1,3-diol; (3R)-butane-1,3-diol

CAS:107-88-0

EINECS:203-529-7

FEMA registration number: 2842

Physical and chemical indicators

Appearance: colorless, viscous liquid.

Melting point (°C): <-54

Boiling point (°C): 207°C at 760 mmHg

Relative density (water = 1): 1.01

Density: 1.001g/cm3

Refractive index: N20/D1.4385-1.4405(LIT)

Relative vapor density (air = 1): 3.2

Saturated vapor pressure (kPa): 0.008 (20°C)

Vapour pressure: 0.0541mmHg at 25°C

Heat of combustion (kJ/mol): 595.0

Flash point (°C): 121

Ignition temperature (°C): 393.9

Lower explosive limit % (V/V): 1.9

Property description: colorless viscous liquid. Melting point <-54 °C, boiling point 207 °C at 760 mmHg, relative density 1.01 (20/4 °C), viscosity (25 °C) 103.9 mPa·s, refractive index n20/D1.4385-1.4405 (lit), surface tension (25 °C) 37.8mN, m, flash point 121 °C. Soluble in water, acetone, methyl ethyl (methyl) ketone, ethanol, dibutyl phthalate, castor oil, almost insoluble in aliphatic hydrocarbons, benzene, toluene, carbon tetrachloride, ethanolamines, mineral oil, linseed oil. When hot, it can dissolve nylon, and can also partially dissolve shellac and pine resin. Due to the high boiling point, it is easy to be oxidized by air during distillation under atmospheric pressure, so it is advisable to distill under reduced pressure. Odorless, slightly bittersweet. It is highly hygroscopic and can absorb moisture equivalent to 12.5 of its own weight (when the relative humidity is 50) or even 38.5 of the water (when the relative humidity is 80).