title: Semimicro determination of mercaptans with copper(II).
abstract: A rapid and precise titrimetric method for the determination of mercaptans on the semimicro scale is described. Samples dissolved in water, methanol. dimethylformamide or acetonitrile are treated with a measured excess of cupric sulphate. After 1 min, the excess of copper(II) is back-titrated with standard mercaptoacetic acid solution. At the end-point the violet complex first formed changes to a permanent yellow. The method is applicable to a variety of mercaptans and accurate to 0.2%. It is relatively free from interferences.
authors.affiliation: Department of Chemistry, University of Jabalpur, Jabalpur 482001, India.
authors.forename: S
authors.initials: S
authors.lastname: Bose
authors.forename: M P
authors.initials: MP
authors.lastname: Sahasrabuddhey
authors.forename: K K
authors.initials: KK
authors.lastname: Verma