... auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, ... synthesis, foodstuff industry, and poultry process.3, Specifications: 1. Industrial grade Main content, %; 94.0 P2O5%≥ 57.0 Water insoluble %; ... of 1% water solution 9.2-10.0 2. Food grade Main content, %: 94.0 P2O5%; 57.0 Water insoluble %; ...