Chemistry of carbon compounds – Dipeptides – e.g. – aspartame – anserine – carnosine – etc.
Patent
1980-04-24
1981-06-30
Sutto, Anton H.
Chemistry of carbon compounds
Dipeptides, e.g., aspartame, anserine, carnosine, etc.
423 12, C07F 940, C01G 5600
Patent
active
042762359
ABSTRACT:
Bidentate organophosphorous compounds are purified of undesirable impurities by contacting a solution of the compounds with a mercuric nitrate solution to form an insoluble mercuric bidentate compound which precipitates while the impurities remain in solution. The precipitate is washed and then contacted with a mixture of an aqueous solution of a strong mercuric ion complexing agent and an organic solvent to complex the mercuric ion away from the bidentate compound which then dissolves in the solvent. The purified bidentate compounds are useful for extracting the actinide elements from aqueous acidic nuclear waste solutions.
REFERENCES:
patent: 3993729 (1976-11-01), Epstein et al.
patent: 4051203 (1977-09-01), Schulz
Krupa et al, ICP-1181, Preparee Under DOE contract EY-76-C-07-1540.
McIassac et al, "Flowsheet Dev. Work at the ICP plant, etc", distributed at Acetinide Symp. Pac. Conf. Honolulu, Hawaii about 04/01/79.
McIassaac et al.,, ICP-118- prepared under DOE contract DE AC07-761 DO 1540.
Krupa Joseph F.
McIsaac Lyle D.
Schroeder Norman C.
Besha Richard G.
Denny James E.
Sutto Anton H.
The United States of America as represented by the United States
Weinberger James W.
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