TITRIMETRIC DETERMINATION OF ZIRCONIUM

Journal Article · Tue Jan 01 04:00:00 EST 1957 · Magyar Kem. Folyoirat

OSTI ID:4225578

Schneer, A; Hartmann, H

Description of 2 new methods of determining Zr in minerals are presented. Zr is precipitated from hydrochlonic acid solution with mandelic acid (I) or with p-bromomandelic acid (II), the precipitate is dissolved in a saturated solution of Na/sub 2/C0sub 3/, I (or II) is oxidized with KMnO/sub 4/, to benzoic (or p- bromobenzoic) acid and the excess KMnO/sub 4/ is determined in the usual manner with H/sub 2/C/sub 2/O/sub 4/. From 2 to 50 mg Zr are determined with an error of plus or minus 1%. The second method is suitable for determination of less than 2 mg Zr. Na/sub 2/Cr/sub 2/O/sub 7/ is used as oxidizing agent in concentrated H/sub 2/SO/sub 4/. Excess of oxidizing agent is determined by titration with a solution of FeSO/sub 4/ in the presence of ferroin as indicator. 1 to 5 mg Zr are determined with an error from 1 to -2%; less than 1 mg Zr---with an error of --2 to --5%. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-018977
• OSTI ID: 4225578
• Journal Information: Magyar Kem. Folyoirat, Journal Name: Magyar Kem. Folyoirat Vol. Vol: 63
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BENZOIC ACID
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM OXIDES
ERRORS
HYDROCHLORIC ACID
IRON SULFATES
MANDELIC ACID
MANGANESE OXIDES
MINERALS
ORGANIC ACIDS
OXIDATION
POTASSIUM COMPOUNDS
PRECIPITATION
QUANTITATIVE ANALYSIS
SODIUM CARBONATES
SODIUM COMPOUNDS
SOLUTIONS
SULFURIC ACID
ZIRCONIUM