PROCESS FOR REMOVAL OF RESIDUAL ORGANIC MATTER AND COLOR FROM PURIFIED PHOSPHORIC ACID

摘要

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.degree.C. and 150.degree.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.