US PATENT SUBCLASS 423 / 585
.~.~.~ From persulfuric acid or persulfate


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

579  DF  OXYGEN OR COMPOUND THEREOF {4}
582  DF  .~ Peroxide {2}
584  DF  .~.~ Hydrogen {3}
585.~.~.~ From persulfuric acid or persulfate


DEFINITION

Classification: 423/585

(under subclass 584) Processes wherein the preparation of hydrogen peroxide includes the use of permonosulfuric acid (H2SO5) or perdisulfuric acid (H2S2O8) or the corresponding sulfate salts.

(1) Note. These acids may also be identified as peroxymonosulfuric or peroxydisulfuric, respectively.

(2) Note. Included under this definition are processes describing the distillation of persulfuric acid or a persulfate compound to produce hydrogen peroxide. However, there must first be a hydrolysis with water to form hydrogen peroxide which is then distilled from the mixture.

SEE OR SEARCH CLASS

203, Distillation: Processes, Separatory, appropriate subclasses, for specific distillation processes for separating hydrogen peroxide from a mixture.