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单词 alkalamide
释义

alkalamiden.

Forms: 1800s alcalamide, 1800s alkalamid, 1800s alkalamide.
Origin: Formed within English, by compounding. Etymons: alkali n., amide n.
Etymology: < alkali n. + amide n. Compare French alcalamide (1854 or earlier). N.E.D. (1884) gives the pronunciation as (æ·lkălăməi:d) /ˈælkələˌmaɪd/.
Chemistry. Obsolete.
A compound which is both an amine and an amide, containing both acid and alcohol radicals bonded to a nitrogen atom.
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the world > matter > chemistry > organic chemistry > alkalamides > [noun]
alkalamide1849
dialkalamide1863
1849 Amer. Jrnl. Sci. 58 375 The reaction between an alkalamid and a nitrite is one which results in the production of a new saline genus in place of the nitrite and the formation of a new amide or an anhydride amide and water.
1858 T. Graham & H. Watts Elem. Chem. (ed. 2) II. 561 When the positive radical is an alcohol-radical, the compounds are called alcalamides.
1863 H. Watts Dict. Chem. I. 169 [Classification of compound ammonias] 3. Ammonias in which 2 or more atoms of hydrogen are replaced by acid- and base- radicles. This division we call alkalamides.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2020).
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n.1849
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