Phosphoric acid(PA) (CAS No.: 7664-38-2 ) Standard Executed: GB2091-1992 Molecular formula : H3PO4 M.W. : 98.0. Description : 1. It is colorless, transparent and syrupy liquid. 2. The density is 1.70. 3.It mixes with water in all proportions and then produce an amount of heat. It loses water and converts to pyrophosphoric acid and metaphosphoric acid further. Usage: It is used for phosphate industry, electroplating and chemical polishing pharmaceutics sugar industry, complex fertilizer, etc. Specification Tech grade. Main content % 85. Chroma 30 Heizen. Chloride, as Cl % 0.0005. SO4 % 0.01. Fe % 0.002. Arsenic, as As % 0.01. Heavy Metals, as Pb % 0.001. Package: Plastic drum, net weight 30kg, 35kg, 330kg.