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iso-propyl
iso-propyl n. 
/ˌʌɪsə(ʊ)ˈprəʊp(ᵻ)l/,
Brit. /ˌʌɪsə(ʊ)ˈprəʊpʌɪl/
, /ˌʌɪsə(ʊ)ˈprəʊpʌɪl//ˌʌɪsə(ʊ)ˈprəʊp(ᵻ)l/U.S. /ˌaɪsoʊˈproʊp(ə)l/
(propyl n.)/ˌaɪsoʊˈproʊp(ə)l/ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > hydrocarbon radicals > named, by number of carbon atoms > three
propyl1850
trityl1854
vinyl1863
iso-propyl1866
isopropenyl1885
1866 Jrnl. Chem. Soc. 19 487 We know that isopropyl compounds do not yield propionic acid by oxidation.
1872 Jrnl. Chem. Soc. 25 237 The production of iso~propyl alcohol, instead of the normal alcohol, by the decomposition of normal propylamine nitrite.
1888 I. Remsen Introd. Study Compounds of Carbon 120 Secondary propyl or isopropyl alcohol.
1934 H. Hiler Notes Technique Painting v. 288 Isopropyl alcohol or petrohol is one of the latest solvents used. It will dissolve most varnishes.
1948 Economist 31 July 193/1 American production of isopropyl alcohol (now the principal source of acetone) began in small quantities about fifteen years ago.
1955 H. R. Downs Chem. Living Cells xii. 410 Administration of doubly labeled isovaleric acid gives rise to cholesterol in which it appears that the carbons of the isopropyl group of that acid have been incorporated as a unit.
1966 [see iso-butyl n.]. 1970 R. Passmore & J. S. Robson Compan. Med. Stud. II. xviii. 40/2 Ethyl alcohol, or better isopropyl alcohol, are used for rapid skin disinfection and are probably the best substances for this purpose.
isopropyl
isopropyl n. /ˌʌɪsə(ʊ)ˈprəʊp(ᵻ)l/,
Brit. /ˌʌɪsə(ʊ)ˈprəʊpʌɪl/
, /ˌʌɪsə(ʊ)ˈprəʊpʌɪl//ˌʌɪsə(ʊ)ˈprəʊp(ᵻ)l/U.S. /ˌaɪsəˈproʊp(ə)l/
the radical (CH3)2CH—, as in isopropyl alcohol n. a liquid secondary alcohol, CH3CHOH·CH3, made by the hydration of propylene and widely used as a solvent and in the production of acetone./ˌaɪsəˈproʊp(ə)l/ΘΚΠ
the world > matter > chemistry > organic chemistry > alcohols > [noun] > monohydric alcohols by number of carbon atoms > three > secondary alcohol
isopropyl alcohol1880
isopropanol1945
1880 Athenæum 27 Nov. 713/1 The authors..have thus prepared aluminic methylate, ethylate, propylate (isopropylate could not be obtained).
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