| 单词 | butylene glycol |
| 释义 | > as lemmasbutylene glycol Each of four isomeric liquid alcohols having the general formula C4H8(OH)2, used as solvents and as reagents in chemical synthesis. Also called butylene glycol.The four isomers are 1,2-butanediol (CH2(OH)CH(OH)CH2CH3), 1,3-butanediol (CH2(OH)CH2CH(OH)CH3), 1,4-butanediol (CH2(OH)CH2CH2CH2(OH), and 2,3-butanediol (CH3CH2(OH)CH(OH)CH3). ΚΠ 1901 Chem. News 1 Mar. 107/2 (heading) Preparation of β-amyloxypropionic acid and the diamyline of butanediol-1.4. 1911 Proc. Royal Soc. 1910–11 B. 83 276 The yield of diacetyl by oxidation of the crude glycol, taken in conjunction with the..molecular weight determination, are conclusive evidence that the substance is nearly pure 2:3-butanediol. 1919 Jrnl. Amer. Chem. Soc. 41 857 If the same glucophore..is linked to the methyl radical or ethyl radical, we obtain 1,2-propanediol..and 1,2-butanediol..respectively, two other sweet compounds. 1942 H. R. Rosenberg Chem. & Physiol. Vitamins 605 Propanediols and butanediols as solvents for fat soluble vitamins, especially for vitamins D. 1993 New Scientist 20 Feb. 18/3 Normally.., the fermentation of the beer has to be ‘rested’ while yeast destroys the diacetyl, converting it into tasteless butanediol. 2012 F. L. Cavender in Patty's Toxicol. (ed. 6) IV. lxiii. 623/1 1,3-Butanediol also has very low toxicity when given in repeated oral doses [to laboratory animals]. < as lemmas |
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