Separation and gravimetric determination of niobium, tantalum and titanium by precipitation with n-benzoyl-n-phenylhydroxylamine

✍ Scribed by F.J. Langmyhr; T. Hongslo

• Publisher: Elsevier Science
• Year: 1960
• Tongue: English
• Weight: 471 KB
• Volume: 22
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)88290-2

✦ Synopsis

INTIlODUCTION N-Benzoyl-N-phenylhydroxylamine, a derivative of cupferron, was originally synthesized by BAMBERGEIZ~. The reagent was used by SIIOME~ for the gravimetric determination of aluminium, copper, iron and titanium, and for the calorimetric determination of vanadium. It was recommended by MOSHIER AND SCHWARBEIZG~ for the gravimetric determination of tantalum in the presence of niobium, titanium and zirconium. MA JUMDAR AND MUKHER JEERER used it for the separation and determination of niobium and tantalum. MOSHIBR AND SCHWARBERG separated tantalum by two or three precipitations at prr I, while niobium and titanium were kept in solution as the fluoride complexes.

* l3tl~ylcncd~aminctctraacetic

acid, disodlum salt,