TRIPHENYLMETHANE, (C 6 H 5) 3 CH, a hydrocarbon, important as being the parent substance of several series of exceedingly valuable dyestuffs, e.g.
Triphenylmethane is a white crystalline solid, melting at 9 2° and boiling at 358°.
3150, et seq.) by acting on triphenylmethane chloride (from triphenylmethane carbinol and phosphorus pentachloride, or from carbon tetrachloride and benzene in the presence of aluminium chloride) and its homologues with zinc, silver or mercury.
Triphenylmethanedyes are water-soluble organic compounds that contain a colored cation.
The reaction of OH ion with triphenylmethanedyes results in a disruption of the conjugation and loss of color.
Since the absorbance of the violet colored triphenylmethane cation is directly proportional to its concentration, the kinetics of the reaction can be determined by measuring the change in absorbance as a function of time.
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