Spectrophotometric Determination of Cobalt with m-(Mercaptoacetamido) phenol.

Abstract

The reagent m-(mercaptoacetamido) phenol forms a purpule 1 : 2 complex with cobalt which is soluble in sodium hydroxide solution. The reagent has been used for the spectrophotometric estimation of cobalt. The complex has a maximum at 480 nm with molar absorptivity 1.04 x 10⁴ 1 mol^–1 cm^–1. The effect of interfering ions has been studied and the method was applied to cobalt(II) determination in vitamin preparations.