(4-Nitrophenyl)urea
Title: (4-Nitrophenyl)urea
CAS Registry Number: 556-10-5
Molecular Formula: C7H7N3O3
Molecular Weight: 181.15
Percent Composition: C 46.41%, H 3.89%, N 23.20%, O 26.50%
Literature References: Prepn from N-substituted S-phenylthiocarbamates: Crosby, Niemann, J. Am. Chem. Soc. 76, 4458 (1954).
Properties: Prisms from abs ethanol, needles from dil ethanol, mp 238°. Practically insol in cold water. Sol in boiling water, methanol, ethanol, dimethylformamide. Sparingly sol in ether, benzene.
Melting point: mp 238°

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