Phosphoric Acid Industry Grade (85%) Phosphoric Acid Industry Grade (85%) H3PO4 compliance to the standards of GB3149-2004 Colour≤20H3PO4, %≥85.0Chloride(Cl), %≤0.0005SO4, %≤0.003Iron(Fe ... , organic reaction catalyst, for refractory material additive and activated carbon Phosphoric Acid Industry Grade (85%)