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Class Information
Number: 568/760
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal) > Purification or recovery > From ammoniacal liquor
Description: Processes wherein the compound is separated from a substance which includes ammonia.

Patents under this class:

Patent Number Title Of Patent Date Issued
5283376 Method of phenol extraction from phenol tar Feb. 1, 1994
4160725 Waste water purification processes Jul. 10, 1979
4025423 Process for removing monohydric and polyhydric phenols from waste water May. 24, 1977

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