AROMATIC HYDROXYLAMINES AS ORGANO-ANALYTICAL REAGENTS

Abstract

The investigation of the use, as analytical precipitants, of a number of aromatic phenylhydroxylamines is described. In general they react similarly, increasing in selectivity with an increase in acidity of the oxime group. In acid solutions (1% or more) only vanadium, tin, titanium, and zirconium are precipitated. Their variation in reaction with copper and the nature of their reaction with tin are described. All compounds can act as oxidants or rėductants with an oxidation potential of approximately −1.2 volts.