Process for removal of residual organic matter and color...

Details Process for removal of residual organic matter and color... Process for removal of residual organic matter and color...

C - Chemistry, Metallurgy

01

B

23/338, 23/76

C01B 25/237 (2006.01) C01B 25/46 (2006.01)

Patent

CA 1198575

ABSTRACT PROCESS FOR REMOVAL OF RESIDUAL ORGANIC MATTER AND COLOR FROM PURIFIED PHOSPHORIC ACID This invention provides a process for removal of residual organic matter and color from purified wet process phosphoric acid that comprises contacting the purified phosphoric acid with hydrogen peroxide at a temperature between 100°C. and 150°C., for between l/4 hour and 4 hours, and using a weight ratio of hydrogen peroxide to phosphoric acid between 0.001 and 0.05.

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