TRIALKYL THIOPHOSPHATES. SELECTIVE EXTRACTANTS FOR SILVER AND MERCURY

Journal Article · Thu Dec 01 04:00:00 EST 1960 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

OSTI ID:4116531

Handley, T H; Dean, J A

Triiso-octyl thiophosphate and tri-n-butyl thiophosphate, neutral esters of monothiophosphoric acid which contain an isolated P = S group, are highly selective extractants for silver and mercury(II) ions in nitric acid medium from the 35 elements tested. The extracted species are formed rapidly and the partition is easily reversed. From aqueous solutions 6M in nitric acid and for a 0.67M solution of the reagent in carbon tetrachloride, the partition coefficient at room temperature for silver exceeds 100; for mercury it is 90. The influence of a wide range of nitric acid, reagent, and silver concentrations, and the effects of temperature, diverse acids, and salting agents upon the partition equilibrium were investigated. Structures are postulated for the solvates formed between the reagent molecules and nitric acid and the metal nitrates. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• NSA Number: NSA-15-004074
• OSTI ID: 4116531
• Journal Information: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 32; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDS
ALKYL RADICALS
CARBON TETRACHLORIDE
CHEMISTRY
CONFIGURATION
ELEMENTS
ESTERS
IONS
MERCURY
METALS
MOLECULES
NITRATES
NITRIC ACID
PHOSPHATES
PHOSPHORIC ACID
SILVER
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
SULFUR COMPOUNDS
TEMPERATURE
TESTING
WATER