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单词 methanoic
释义

methanoicadj.

Brit. /mɛθəˈnəʊɪk/, U.S. /ˌmɛθəˈnoʊɪk/
Origin: Formed within English, by compounding. Etymons: methane n., -oic comb. form.
Etymology: < methane n. + -oic comb. form.
Chemistry.
methanoic acid n. formic acid, HCOOH.methanoic acid is the systematic name according to IUPAC rules, but the trivial name is preferred.
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formic acid1791
methanoic acid1894
1894 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. (ed. 2) vi. 168 Formic Acid, (Methanoic acid), acidum formicum CH2O2.
1937 Chem. Abstr. 31 Subj. Index 9978/2 Methanoic acid, see formic acid.
1972 R. O. C. Norman & D. J. Waddington Mod. Org. Chem. xiii. 183 Methanoic acid and ethanoic acid are miscible with water.
1981 J. W. Buttle et al. Chem. (ed. 4) xx. 443 Elimination of water follows..the formation of methanoic acid (formic acid) from trichloromethane.
1998 Chemosphere 37 1033 The TiO2-mediated photomineralization of 8–1000 ppm of methanoic acid, of 6–100 ppm of ethanoic acid, of 6-180 ppm of propanoic acid, and of 6–90 ppm of n-decanoic acid in aqueous solutions was studied.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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adj.1894
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