acetinn.
/əˈsiːtɪn/, /əˈsɛtɪn/, /ˈasᵻtɪn/, U.S. /əˈsidɪn/, /ˈæsəˌtɪn/ Chemistry.
Any of five acetates of glycerol, which are thick oily liquids used as solvents and plasticizers; spec. = monoacetin n. Cf. also diacetin n., triacetin n.Glycerol may undergo substitution of one, two, or all of its alcoholic hydrogen atoms, giving two possible monoacetates, two diacetates, and one triacetate.Commercial acetins are mixtures of the various acetates. Monoacetin contains chiefly the 1-acetate; CH2OH·CHOH·CH2OOCH3. Diacetin is chiefly the 1,3-diacetate; CH3COOCH2·CHOH·CH2OOCCH3.
ΚΠ
1854 Q. Jrnl. Chem. Soc. 6 286 Acetin..a neutral liquid, of slightly ethereal odour.
1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxvi. 358 The acetins are prepared by the action of strong acetic acid upon glycerin.
1920 Jrnl. Amer. Chem. Soc. 42 1455 The various acetins, or glycerin esters of acetic acid..are as follows.
1954 T. Vickerstaff Physical Chem. Dyeing (ed. 2) xii. 423 Wool—Adsorption of dyes... Acetin, diacetin, chloral hydrate and oxonamide were among the most effective agents tested.
1999 J. S. Pruthi Quality Assurance Spices & Spice Products xv. 463 Acetins..are occasionally encountered in commercial clove oils and can be detected by washing the oil with a saturated salt solution.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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n.1854