... sour agent, and also instead citric acid, malic acid, In beer saccharification process, can replace the lactic acid adjustable PH value, In the ... in electronic industry, pharmaceutical industry, etc. Specifications of Phosphoric Acid food gradeNo.Items of AnalysisUnitNational standardGB3149-20041ColorApha≤202(H3PO4)%≥75 ... )%≤0.00055Fluorine(F)%≤0.00106Oxide(H3PO3)%≤0.0120 Phosphoric Acid Food Grade