Non-aqueous cerimetric determination of dithiocarbamates and its application to the determination of amines

A non-aqueous titrimetric method for determination of dithiocarbamates with cerium(IV), is described. The compounds are titrated at room temperature, with visual and potentiometric end-point detection. In visual titrations, the reagent serves as self-indicator and turns the solution yellow at the end-point. Methyl Red can also be used as the indicator. The method has been applied to the determination of amines after their quantitative conversion into dithiocarbamates by reaction with carbon disulphide. The proposed method is accurate to +/- 0.8% with a relative standard deviation of +/- 0.7%.