... or SGS Cer 75% -85% Food or Industrial Grade Phosphoric Acid (PA) 1. Bases InformationCAS NO.: 7664-38-2UN NO ... ( F) % ≤ 0.001Oxidableas H3PO3 % ≤ 0.0123. UseageIndustrial grade phosphoric acid is mainly processed to be phosphate of lime, sodium,ammonia ... antiseptics, decontaminant and catalyst in different grade; Food grade phosphoric acid is mainly used to produce series phosphate food additive, and ...