Abstract
UREA picrate is described by Smolka1 as having m.p. 142° C. and formula CH4ON2,C6H3O7N3 (form A). A new isomorphous form with m.p. 275° C. and the same formula (form B) is here described.
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References
Smolka, Monatsch., 6, 915 (1885); Brit. Chem. Abs., 50, 453 (1886).
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ONGLEY, P. Isomorphic Form of Urea Picrate. Nature 159, 812 (1947). https://doi.org/10.1038/159812a0
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DOI: https://doi.org/10.1038/159812a0
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