title: Sulphonated azo-dyes as extractive metallochromic reagents.
abstract: A survey has been made of analytically useful extractable ion-pair complexes that are formed by the use of a series of metallochromic indicator-metal complexes in conjunction with quaternary ammonium ions. The reagents were o,o'-dihydroxyazo dyes and azo-oxines.
authors.affiliation: Department of Chemistry University of Arizona Tucson, Arizona 85721, U.S.A.
authors.forename: C
authors.initials: C
authors.lastname: Woodward
authors.forename: H
authors.initials: H
authors.lastname: Freiser