Accession Number : AD0738849

Title :   Spectrophotometric Determination of Antimony in Sebacate-Base Semi-Fluid Lubricants.

Descriptive Note : Test rept.,

Corporate Author : FRANKFORD ARSENAL PHILADELPHIA PA

Personal Author(s) : Norwitz,George ; Galan,Michael

Report Date : JAN 1972

Pagination or Media Count : 22

Abstract : A spectrophotometric method is proposed for the determination of antimony in sebacate-base semi-fluid lubricants by the use of the yellow iodide complex obtained using a potassium iodide-sodium hypophosphite reagent. In the method, the organic matter is destroyed by treatment with a mixture of sulfuric and nitric acids and evaporation to fumes of sulfuric acid. Barium sulfate is filtered off, the solution is diluted in a volumetric flask, one aliquot is taken for the blank, and another aliquot is taken for development of the color. Conditions for development of the color were studied. Samples from seven producers of sebacate-base lubricants (MIL-L-46000A) were examined. (Author)

Descriptors :   (*LUBRICANT ADDITIVES, ANTIMONY COMPOUNDS), (*ANTIMONY COMPOUNDS, *COLORIMETRIC ANALYSIS), ANTIMONATES, SEBACIC ACID, COMPLEX COMPOUNDS, IODIDES

Subject Categories : Inorganic Chemistry
      Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE