N-Benzoylphenylhydroxylamine as a Reagent for Tin

Abstract

N-Benzoylphenylhydroxylamine precipitates tin quantitatively from stannic chloride solutions; complete precipitation is obtained in solutions varying from 1 to 8% in concentrated hydrochloric acid. The reagent reduces stannic to stannous tin before forming the addition compound (C13H11O2N)2 SnCl2; this compound is stable and may be used as a weighing form for tin. Tin can be determined readily in brasses; copper, lead, and zinc do not interfere.

Spectrophotometric Determination of Vanadium(V) with N-Benzoyl-N-phenylhydroxylamine

“…As reported previously (5), alginate was incorporated in the eluent to act as stabilizer for the colloidal molybdenum blue. The color is stable for at least 1 hour and obeys Beer's law within the range investigated here.…”

A review of cassiterite beneficiation fundamentals and plant practices

“…A derivative of hydroxamic acid, N-Benzoylphenylhydroxylamine (BPHA), was used to quantitatively precipitate tin, both stannous and stannic (Ryan and Lutwick, 1953;Lutwick and Ryan, 1954). The infra-red spectra of the precipitated complex indicated the formation of an inner complex of the composition Sn(C 13 H 10 O 2 N) 2 Cl 2 and not an addition compound.…”

Volumetric and Gravimetric Analytical Methods for Inorganic Compounds

“…The beryllium (27), cobalt, nickel (116), molybdenum (VI) (117), niobium(V) (68,72), tin(IV) (101), and zirconium (5, 100) salts are stoichiometric and may be dried at 110°C. Scandium (4), thorium, and cerium(III) (115) precipitates must be ignited to the oxide.…”