... mud,dispersant of suspension such as paint, kaolin, preservative agent for paper making, organic synthesis catalyzer, petizing agents, and to ... 0.05 4 Iron, as Fe %≤ 0.015 0.01 5 pH of 1% water solution 9.2-10.0 9 ... .5-10.0 6 Heavy metal, as Pb %≤ - 0.001 7 ... high quality! We are looking forward to hearing from you! Hot selling sodium tripolyphosphate BP98 for food grade