Phosphoric Acid 85% Tech Grade & Food Grade Formula:H3PO4 85% 81% 75% CAS: 7664 38 2 Usage as food acidulant yeast untr Phosphoric Acid 85% Molecular formula: H3PO4 Molecular weight: 97.995 CAS: [7664-38-2] U.N No: 1805 Hazard Class No.: 8 Usage: in manufacture superphosphates, other phosphate salts, polyphosphates, detergents. Acid catalyst in making ethylene, purifying hydrogen peroxide. As ...