Determination of organotrithiocarbonates with o-diacetoxyiodobenzoate and N-chlorosuccinimide in aqueous and non-aqueous media

Abstract

The determination of organotrithiocarbonates with o-diacetoxyiodobenzoate and N-chlorosuccinimide in aqueous and non-aqueous media using visual and potentiometric methods is described. The visual end-point is indicated by a sharp colour change from straw yellow to deep yellow caused by the first drop of oxidant solution in excess. Potentiometric titrations were performed with antimony or modified calomel reference electrodes and a bright platinum wire as the indicator electrode. The proposed method is simple, rapid, requires the minimum of apparatus and is also applicable to the determination of β-carboxythiols, 1-thioglycerol and carbon disulphide.