US PATENT SUBCLASS 423 / 642
.~.~.~ By reacting sulfur containing compound

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

579  DF  OXYGEN OR COMPOUND THEREOF {4}
592  DF  .~ Metal containing {12}
641  DF  .~.~ Alkali metal (Li, Na, K, Rb, or Cs) {2}
642.~.~.~ By reacting sulfur containing compound

DEFINITION

Classification: 423/642

(under subclass 641) Processes in which preparation of the compound includes the use of a compound of sulfur as a reactant.

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183, for processes of treating mixtures to regenerate hydroxide solutions by reacting a sulfur containing compound to form an alkali metal hydroxide.