Title: 3,7-Dinitro-5-oxophenothiazine
CAS Registry Number: 574-81-2
CAS Name: 3,7-Dinitro-10H-phenothiazine 5-oxide
Additional Names: dinitrodiphenylamine sulfoxide
Molecular Formula: C12H7N3O5S
Molecular Weight: 305.27
Percent Composition: C 47.21%, H 2.31%, N 13.76%, O 26.21%, S 10.50%
Literature References: Prepd from thiodiphenylamine and nitric acid: Buchanan, Schryver, Br. Food J. 11, 101 (1908), C.A. 3, 2329 (1909); Kehrmann, Nossenko, Ber. 46, 2818 (1913).
Properties: Yellowish leaflets from glacial acetic acid, dec 260°. Insol in water and in the usual organic solvents. Sol in ammonia water and in aq solns of alkalies, forming bluish-red solns.
Use: In the determination of tin.
Status: This monograph has been retired and is no longer subject to revision or update.

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