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Systematic name Ethanediamide
Other names Oxamide
Oxamimidic acid
Oxalic acid diamide
1-carbamoyl-Formimidic acid
Molecular formula C2O2N2H4
Molar mass 88.0654 g/mol
Appearance White powder
CAS number [471-46-5]
Solubility in water Soluble
Solubility in ethanol
Density 1.667 g/cm3
Decomposes 350 °C
EU classification Mild Irritant (6.1)
R-phrases R36
S-phrases S25
Flash Point >300oC
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Oxamide is a white crystalline solid, which is soluble in ethanol, slightly soluble in water and insoluble in diethyl ether. Heating it in air to temperatures above 350°C causes decomposition yielding cyanogen and water. Oxamide is the double amide of oxalic acid.


It is used as a stabilizer for nitrocellulose preparations and may substitute urea in fertilizers.

Oxamide has proved a useful research tool due its ability to form self-assembled monolayers consisting of a hydrogen bonded network.[1]


  1. ^ Nguyen T.L., Fowler F.W., Lauher J.W., "Commensurate and incommensurate hydrogen bonds. An exercise in crystal engineering." Journal of the American Chemical Society, 123(44), pp. 11057-64, 2001. doi:10.1021/ja016635v
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Oxamide". A list of authors is available in Wikipedia.
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