... dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic ... process.3, Specifications: 1. Industrial grade Main content, %; 94.0 P2O5%≥ 57.0 Water insoluble %; 0.1 Iron, ... Fe %; 0.01 pH of 1% water solution 9.5-10.0 Heavy metal, as Pb %; 0.001 Arsenic, ... in the open air. Good quality Sodium Tripolyphosphate(94.0% min)