propanedioln.
/ˌprəʊpeɪnˈdʌɪɒl/, U.S. /ˌproʊpeɪnˈdaɪˌɑl/ Chemistry.
Either of two isomeric liquid alcohols; = propylene glycol n. at propylene n. Compounds. Also: a substituted derivative of either of these compounds.Formula: CH2(OH)CH(OH)CH3 (more fully 1,2-propanediol) and CH2(OH)CH2CH2OH (more fully 1,3-propanediol).
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkenes > straight-chained, by number of carbon atoms > three
propylene1850
tritylene1857
propene1867
propanediol1894
1894 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. (ed. 2) 206 Propylene glycol is known in two isomeric forms, viz.: (a) Tri-methylene glycol† or β-Propylene glycol,..(b) α-Propylene glycol‡. [Note] †1-3-Propane-diol [Ger. 1, 3-Propandiol]. ‡1-2-Propane-diol [Ger. 1, 2-Propandiol].
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.
1952 Jrnl. Pharmacol. & Exper. Therapeutics 105 452 The 1,3-propanediol ethers have greater protective action in electroshock seizures than the corresponding position isomers of the 1,2-propanediol series.
1991 Lancet 3 Aug. 292/2 More than 300 embryo transfers were done in Cambridge. Women who had regular cycles received embryos obtained from previous stimulated cycles and frozen with propanediol.
This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).
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n.1894