1, 4-butenediol (trans + cis) name
The Chinese name is 1, 4-dihydroxy-2-butene
English name - Butene 2-1, 4 - diol (cis and trans)
Chinese alias | 1, 4-1, 4 - butylene glycol 2 hydroxy - 2 butene | thin - 1, 4-2 - butyl glycol
More English nicknames
Physicochemical properties of 1, 4-butenediol (trans + cis)
The density of 1.1 + / - 0.1 g/cm3
Boiling point 235.0±0.0 °C at 760 mmHg
Melting point 7 DHS C
Molecular formula C4H8O2
The molecular weight of 88.105
Flash point 85.4 + / - 16.4 ° C
Exact mass 88.052429
PSA 40.46000
LogP - 0.87 -
Appearance and properties Transparent to light yellow liquid
Vapor pressure 0.0±1.0 mmHg at 25°C
The refractive index of 1.482
Storage conditions
This product should be kept sealed. The product is packed in a brown glass bottle and protected by a wooden box.
The stability of
1. Flammable liquid, strong hygroscopicity. Is a mixture of cis and trans isomers. It has the properties of a general alkene and a primary alcohol. In the presence of acid, 2, 5-dihydrofuran or butenal is formed by heating, and the cis-isomer in particular is prone to reaction. Heating to 165℃ above the gradual dehydration occurs polymerization reaction.
2. Non-corrosive, low toxicity. But it is irritating to skin and mucous membrane. The LD50 of white rabbits and guinea pigs were 1.25ml/kg and 1.25~1.5ml/kg, respectively. The production workshop should have good ventilation, and the equipment should be sealed to prevent leakage. Operators should wear protective equipment (such as goggles, gloves and masks).
The molecular structure
1, molar refractive index: 23.70
2. Molar volume (CM3 /mol) : 83.1
3. Isotonic ratio (90.2K) : 211.9
4, surface tension (Dyne /cm) : 42.1
5, polarization (10-24cm3) : 9.39
