US PATENT SUBCLASS 423 / 202
.~.~ Treating with acid or acid salt

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

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
179  DF  .~ Alkali metal (Li, Na, K, Rb, or Cs) {12}
202.~.~ Treating with acid or acid salt

DEFINITION

Classification: 423/202

(under subclass 179) Processes including the step of using a compound which yields hydrogen (H[supscrpt]+[end supscrpt]) ions in solution and gives a pH of below 7, such as an acid or acid salt, e.g., NaHSO4, etc.