DETERMINATION OF CHROMIUM IN CALCIUM FLUORIDE MOULD LINING

Technical Report · Thu Jan 01 04:00:00 EST 1959

OSTI ID:4201296

Robertson, G

Chromium can be separated quantitatively from calcium fluoride, after decomposition with fusion mixture and potassium nitrate, by leaching with water. The final estimation is carried out colorimetrically using diphenylcarbazide. The effect of the reagents used, and of any impurities present, on the final color intensity is discussed. The state of oxidation of the chromium at different points in the procedure is considered. For oxidation of the chromium prior to color development methods are given using ammonium persulfate and potassium bromate. (auth)

• Research Organization: United Kingdom Atomic Energy Authority. Industrial Group. Springfields Works, Springfields, Lancs, England
• NSA Number: NSA-14-005180
• OSTI ID: 4201296
• Report Number(s): SCS-R-172
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMMONIUM COMPOUNDS
BROMATES
CALCIUM FLUORIDES
CARBAZIDES
CHEMISTRY
CHROMIUM
COLOR
DECOMPOSITION
DPCA
IMPURITIES
LEACHING
MEASURED VALUES
MELTING
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PERSULFATES
PHENYL RADICALS
POTASSIUM COMPOUNDS
POTASSIUM NITRATES
QUANTITATIVE ANALYSIS
SEPARATION PROCESSES
SULFATES
WATER