title: Redox indicators in titrations with dichloramine-B.
abstract: Naphthidine, dimethylnaphthidine, dimethylnaphthidinedisulphonic acid, o-dianisidine, Quinoline Yellow, diphenylbenzidine and Amaranth are proposed as indicators in titrations of arsenic(III), iron(II), antimony(III), hydroquinone, hydrazinium sulphate, phenylhydrazine hydrochloride, semicarbazide hydrochloride and ascorbic acid with dichloramine-B. They give a very sharp colour change at the equivalence point. Arsenic(III) and iron(II) are suggested for standardization of dichloramine-B solutions. A potentiometric method for the determination of arsenic(III) and semicarbazide hydrochloride is described.
authors.affiliation: Department of Post-graduate Studies and Research in Chemistry, University of Mysore, Manasa Gangotri, Mysore, India.
authors.forename: H S
authors.initials: HS
authors.lastname: Gowda
authors.forename: R
authors.initials: R
authors.lastname: Shakunthala
authors.forename: U
authors.initials: U
authors.lastname: Subrahmanya