RAPID VOLUMETRIC DETERMINATION OF ZIRCONIUM IN FERRO-ZIRCONIUM ALLOYS WITH CUPFERRON

Journal Article · Tue Jul 01 00:00:00 EDT 1958 · Nippon Kinzoku Gakkaishi (Japan)

OSTI ID:4246926

Wakamatsu, S

A simple and rapid procedure for the volumetric determination of zirconium in iron-zirconium alloys has been investigated. Zirconium can be titrated directly with standard cupferron solution using iron(III) as indicator. The titration is carried out in a 25% sulfuric acid solution containing iron(III) and ethyl ether, and after the reaction between zirconium and cupferron is complete, iron(III) is precipitated with cupferron as ferric cupferrate. The endpoint of titration can be detected by color change of ethyl ether layer with ferric cupferrate in the presence of precipitate of zirconium cupferrate. This simple procedure has only few interferences and can usually be applied with a minimum preliminary treatment after dissolving the sample in sulfuric acid and ammonium fluoride, which are efficient solvents for iron--zirconium alloys. Fluoride interferes in this method but can be removed easily by fuming with sulfuric acid and boric acid. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-017032
• OSTI ID: 4246926
• Journal Information: Nippon Kinzoku Gakkaishi (Japan), Journal Name: Nippon Kinzoku Gakkaishi (Japan) Vol. Vol: 22; ISSN NIKGA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

AMINES
AMMONIUM COMPOUNDS
BORIC ACID
BORON OXIDES
COLOR
CUPFERRON
ETHERS
ETHYL RADICALS
FLUORIDES
IRON ALLOYS
IRON OXIDES
LAYERS
METALLURGY AND CERAMICS
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SOLUTIONS
SOLVENTS
STANDARDS
SULFURIC ACID
TITRATION
VARIATIONS
ZIRCONIUM
ZIRCONIUM ALLOYS