A volumetric determination of arsenic and antimony in mixed manganese arsenide, antimonide and phosphide compounds

✍ Scribed by E.R. Whipple; D.H. Ridgley

• Book ID: 104103883
• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 819 KB
• Volume: 35
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(01)81714-1

✦ Synopsis

acid and sulfuric acid are interdependent and he gives optimum concentrations of each. The acid concentration is also important because of the tendency of antimony to hydrolyze and precipitate.

Mercury(I) chloride appeared advantageous over mercury for the selective reduction of antimony because of a somewhat lower oxidation potential than the mercury-mercury(I) couple. The large surface area of a fine powder should lead to considerably better rates of reaction without need of shaking.

EXPERIMENThL

Reagents

Avsenic(III) oxide. Uaker and Adamson, primary standard grade. General Chemical Div., Allied Chemical and Dye Corp., New York.

Antimony metal. The Consolidated Mining and Smelting Co. of Canada, Ltd., Grade H.P., qg.gqgo/;.

Potassium permanganate sohrtion.

Certified reagent solution (concentrated) (Fisher Scientific Company, Fairlawn, New Jersey) was diluted, filtered and standardized against arsenic(II1) oxide.

Other chemicals used were of analytical reagent grade.