Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Scott N. Hutchison0
Bryan C. Fritzler0
Joseph J. Zaher0
Date of Patent
July 29, 2008
Patent Application Number
11724720
Date Filed
March 16, 2007
Patent Primary Examiner
Patent abstract
A process for the manufacture of oxalic acid dihydrate in which an aqueous solution of sodium oxalate is contacted with hydrochloric acid and the resulting mixture then cooled to precipitate oxalic acid, followed by optional recovery and recycling of the sodium oxalate and hydrochloric acid into the reaction chamber.
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