Physical and Chemical Properties 1 4butanediol is a colorless oil liquid flammable melting point 201 boiling point 235flash point open cup 121 relative density 10171204 refractive index 14461 viscosity 25 715mPas It is hygroscopic miscible with water soluble in methanol ethanol acetone slightly soluble in ether The smell is bitter but the taste is slightly sweet With strong reactivity it can carry out oxidation dehydration replacement polymerization amination esterification halogenation and other chemical reactions to produce a series of important chemical products 14butanediol Uses 1 4butanediol is an important organic chemical and fine chemical raw material which is the basic raw material for the production of polybutanediol terephthalate PBT engineering plastics and PBT fiber PBT plastic is one of the five most promising engineering plastics 14butanediol is the main raw material for the production of tetrahydrofuran tetrahydrofuran is an important organic solvent The PTMEG obtained by polymerization is the basic raw material for the production of high elasticity spandex Lycra fiber Spandex is mainly used in the production of high class sportswear swimming suits and other high elasticity knitwear Gammabutyrolactone the downstream product of 1 4butanediol is the raw material for the production of 2pyrrolidinone and NMethylpyrrolidone products From this a series of high valueadded products such as NVinyl2Pyrrolidinone and Polyvinylpyrrolidone are derived which are widely used in the fields of pesticides medicine and cosmetics 14butanediol is also widely used as solvent pharmaceutical cosmetics plasticizer hardener pesticide herbicide foam leather fiber engineering plastics and so on 1 4butanediol BDO uses Manufacturing Process of 14butanediol 1 4butynediol was prepared by acetylene and formaldehyde in the presence of catalyst and then by catalytic hydrogenation to produce 1 4butanediol It can also be prepared by the reaction of 1 3butadiene with acetic acid and oxygen through acetyl oxidation hydrogenation hydrolysis etc
