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Title: Plutonium dissolution process

A two-step process for dissolving plutonium metal, which two steps can be carried out sequentially or simultaneously. Plutonium metal is exposed to a first mixture containing approximately 1.0M-1.67M sulfamic acid and 0.0025M-0.1M fluoride, the mixture having been heated to a temperature between C. and C. The mixture will dissolve a first portion of the plutonium metal but leave a portion of the plutonium in an oxide residue. Then, a mineral acid and additional fluoride are added to dissolve the residue. Alteratively, nitric acid in a concentration between approximately 0.05M and 0.067M is added to the first mixture to dissolve the residue as it is produced. Hydrogen released during the dissolution process is diluted with nitrogen.
 [1];  [2];  [2];  [2];  [3]
  1. (Oak Park, IL)
  2. (Aiken, SC)
  3. (North Augusta, SC)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) SRS
Patent Number(s):
US 5482688
Contract Number:
Research Org:
Country of Publication:
United States
plutonium; dissolution; process; two-step; dissolving; metal; steps; carried; sequentially; simultaneously; exposed; mixture; containing; approximately; 0m-1; 67m; sulfamic; acid; 0025m-0; 1m; fluoride; heated; temperature; 45; degree; 70; dissolve; portion; leave; oxide; residue; mineral; additional; added; alteratively; nitric; concentration; 05m; 067m; produced; hydrogen; released; diluted; nitrogen; mineral acid; sulfamic acid; dissolution process; dissolving plutonium; mixture containing; nitric acid; plutonium metal; two-step process; step process; solution process; containing approximately; /423/