US PATENT SUBCLASS 423 / 321.2
.~.~.~.~.~ Organic solvent extraction

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

299  DF  PHOSPHORUS OR COMPOUND THEREOF {5}
304  DF  .~ Oxygen containing {2}
316  DF  .~.~ Ternary compound containing hydrogen {1}
317  DF  .~.~.~ Orthophosphoric acid {3}
321.1  DF  .~.~.~.~ Purification or recovery {1}
321.2.~.~.~.~.~ Organic solvent extraction

DEFINITION

Classification: 423/321.2

Organic solvent extraction:

(under subclass 321.1) Process wherein separation is by dissolution in an organic liquid.

(1) Note. Dissolution may be of product or impurity.