1,4-Butanediol CAS 110-63-4, colloquially known as 1,4-BDO, is the organic compound with the formula HOCH2CH2CH2CH2OH. This colorless viscous liquid is derived from butane by placement of alcohol groups at each end of the chain. It is one of four stable isomers of butanediol. 1,4-BDO is used in synthesis of polyurethane and polyesters , paints and coatings, copolyester hot melt and solvent-borne adhesives.
Specification of 1,4-Butanediol BDOAppearance Colorless or yellowish oily liquid
crystallization point , /°C ≥15.0
Density (20°C)/(g/mL) 1.015~1.018
Acidity (H+)/(mmol/100g) ≤0. 25
Ignition residue (as Sulfate basis)% ≤0.01
Application of 1,4-Butanediol BDO
1,4-Butanediol is used industrially as a solvent and in the manufacture of some types of plastics, elastic fibers and polyurethanes. In organic chemistry, 1,4-butanediol is used for the synthesis of γ-butyrolactone (GBL). In the presence of phosphoric acid and high temperature, it dehydrates to the important solvent tetrahydrofuran.At about 200 °C in the presence of soluble ruthenium catalysts, the diol undergoes dehydrogenation to form butyrolactone.
1,4-BDO is forbidden to use in drugs, cosmetics, human consumptions and to produce children toys.