O,O'-Dialkyl Phosphorodithioic Acids as Extractants for Metals

The solvent extractions of 42 elements as di-n-butyl phosphorodlthioates into CCl4 from 0.03 to 9N HCl and H2 SO 4 media are presented as plots of log distribution ratio vs log normality in two periodic chants. Significant distributions are shown by 22 elements, generally those which react with hydr...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1962-09, Vol.34 (10), p.1312-1315
Main Authors: Handley, T. H, Dean, J. A
Format: Article
Language:English
Subjects:
ALKYL RADICALS
BUTYL RADICALS
CARBAMATES
CARBON TETRACHLORIDE
COMPLEXES
CONCENTRATION
CONFIGURATION
DECOMPOSITION
DEDTC
DISTRIBUTION
ELEMENTS
ETHYL RADICALS
HYDROCHLORIC ACID
HYDROGEN SULFIDES
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
MASKING AGENTS
METALS
MINERAL ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOSPHORIC ACID
QUANTITY RATIO
SALTS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
STABILITY
SULFUR COMPOUNDS
SULFURIC ACID
THIOIC ACIDS
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Summary:The solvent extractions of 42 elements as di-n-butyl phosphorodlthioates into CCl4 from 0.03 to 9N HCl and H2 SO 4 media are presented as plots of log distribution ratio vs log normality in two periodic chants. Significant distributions are shown by 22 elements, generally those which react with hydrogen sulfide or diethyldithiocarbamate. Compared to the latter, phosphorodithioic acid, especiaily when dissolved in the organic phase, is sigificantly more resistant to decomposition when in contact with strong mineral aeid solutions. The effect of chain length and spatial arrangement of the carbon atoms in the alkyl group, of 11 organic solvent systems, and of certain masking agents and diverse salt concentrations on the dis tribution ratio was investigated. The relative order of extraction (displacement series) of 12 metal complexes was established.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac60190a034