Structural Formula Vector Image
Title: Phenosafranin
CAS Registry Number: 81-93-6
CAS Name: 3,7-Diamino-5-phenylphenazinium chloride
Additional Names: C.I. 50200
Trademarks: Safranin B Extra
Molecular Formula: C18H15ClN4
Molecular Weight: 322.79
Percent Composition: C 66.98%, H 4.68%, Cl 10.98%, N 17.36%
Literature References: Prepd by dichromate oxidation of 1 mol p-phenylenediamine hydrochloride and 2 mols aniline hydrochloride: Witt, Ber. 12, 939 (1879); 19, 3121 (1886). See also Colour Index vol. 4 (3rd ed., 1971) p 4449.
Properties: Green, lustrous needles from dil HCl. Freely sol in water, also sol in alc. Aq and alcoholic solns are purplish-red and have a greenish-yellow fluorescence. Absorption max ~530 nm.
Absorption maximum: Absorption max ~530 nm
Use: Biological stain.

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