oxamiden.
/ˈɒksəmʌɪd/, U.S. /ɑkˈsæmˌaɪd/ Chemistry.
A crystalline amide, NH2·CO·CO·NH2, of oxalic acid. Also: an organic compound containing the group —NH·CO·CO·NH—.
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oxalamide1836
oxamide1838
1838 T. Thomson Chem. Org. Bodies 590 Oxamide. This substance, the first of the series of amides, was discovered by Dumas, in the year 1830.
1866 H. E. Roscoe Lessons Elem. Chem. xxxiv. 303 By heating neutral ammonium oxalate, a white powder called Oxamide is left.
1899 Bull. Torrey Bot. Club 26 51 If we take the oxamide (the amide of the oxalic acid) the result will be oxalic acid, nitrogen and water.
1937 Proc. Royal Soc. A. 160 578 Oxamide was selected on account of its low melting-point (417°C.) for a powder, and because it is fairly inert chemically.
1966 Investigative Urol. 4 125 Stone formation of the oxamide type begins as an intratubular crystallization of oxamide in the collecting ducts of the renal papilla.
1982 Science 26 Nov. 849 Oxamide, modified urea formaldehydes, and isobutylene diurea are examples of compounds that slowly release their nitrogen in soils.
This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).
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n.1838