methylacetylenen.
/ˌmɛθɪləˈsɛtᵻliːn/, /ˌmɛθɪləˈsɛtl̩iːn/, U.S. /ˌmɛθələˈsɛd(ə)lən/, /ˌmɛθələˈsɛdəˌlin/; see also methyl n. Chemistry.
Propyne, CH3C≡CH.
ΚΠ
1882 Jrnl. Chem. Soc. 42 501 The authors [sc. M. Nencki and N. Sieber] consider this substance to be the thiocarbamide of methylacetylenecarboxylic acid, CMe⋮C.CO.S.C(NH2):NH.]
1925 Science 7 Aug. 138/2 Propadiene 20 per cent. and methylacetylene 5 per cent. produce prostration, not true anesthesia, in 15 to 18 minutes.
1930 Jrnl. Amer. Chem. Soc. 52 4540 No record exists concerning the behavior of methylacetylene, CH3—C≡CH, at high temperatures.
1955 Trans. Faraday Soc. 51 620 Data are given for all the partially deuterated species of methyl cyanide and methyl acetylene.
1971 New Scientist 17 June 669/3 They used the 36-foot radio telescope..to observe emission lines in the millimetre-wave spectrum of the object Sgr B2 near the galactic centre. They identify the origins of two of the..lines as the molecules CH3C2H (methylacetylene) and HNCO (isocyanic acid).
1982 DIY Trade May 37/2 It is based on the use of replaceable methyl acetylene (or Mapps gas) and compressed oxygen cylinders.
This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1925