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ethanedioic acid(ĕth'āndīō`ĭk), IUPAC name for oxalic acidoxalic acid
or ethanedioic acid
, HO2CCO2H, a colorless, crystalline organic carboxylic acid that melts at 189°C; with sublimation. Oxalic acid and oxalate salts are poisonous. Oxalic acid is found in many plants, e.g.
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