Title: Nitrin
CAS Registry Number: 553-74-2
CAS Name: 2-Aminobenzaldehyde phenylhydrazone
Molecular Formula: C13H13N3
Molecular Weight: 211.26
Percent Composition: C 73.91%, H 6.20%, N 19.89%
Literature References: Prepd by refluxing 2-nitrobenzaldehyde with phenylhydrazine: Knöpfer, Monatsh. Chem. 31, 97 (1910).
Properties: Needles from acetone, mp 227-229° (dec). Sol in acetone. Sparingly sol in cold alcohol, ether, chloroform, benzene. A soln in alcohol or acetone develops a red color with nitrites upon addn of acid.
Melting point: mp 227-229° (dec)
Use: Detection of nitrites, colibacilli in urine: Pfeiffer, Muench. Med. Wochenschr. 92, 1315 (1950).

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