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Basic info.
Product Name: 1,4-Butanediol
Synonyms: 1,4-Butylene glycol; Tetramethylene glycol; butane-1,4-diol; butane-1,1-diol; BDO
CAS No.: 110-63-4
EINECS: 203-786-5
Molecular Weight: 90.121
Molecular Formula: C4H10O2
Density: 1.006g/cm3
Melting Point(ºC):  20ºC
Boiling Point(ºC):  227.999°C at 760 mmHg
Flash Point(ºC):  105.909°C
refractive_index:  1.441
Water Solubility:  Miscible

Description:

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 Degree C, boiling point of 228 Degree C,171 Degree C(13.3kPa),120 Degree C(1.33kPa),86 Degree C(0.133kPa, the relative density of 1.0171(20/4 Degree C).  The index of refraction is 1.461, flash point is 121 Degree C. It can soluble in methanol and ethanol, slightly soluble in ether. It has bitter taste and moisture absorption.

Application: 

It's an important raw materials of organic chemical and fine chemical, it is basic material in the production of polyethylene terephthalate (PBT) and PBT fiber plastic. 
It's the main raw material to produce tetrahydrofuran (THF). 

It's the main raw material to produce γ -butyrolactone(GBL), and GBL is mainly used for production of α -pyrrolidone and N-methyl pyrrolidone (NMP), and thus derived from vinyl pyrrolidone, polyvinylpyrrolidone and a series of high value-added products, widely used in pesticides, pharmaceuticals and cosmetics and other industries.