Phosphoric acid

Phosphoric acid Molecular Formula: H3PO4 Molecular Weight: 97.99 Properties: Colorless liquid Phosphoric Acid : (GB3149-92) Item Value Industry Grade Food Grade 85% 75% Excellent Grade 1 Grade 2 Excellent Grade 1 Grade 2 Colority ≤ 20 30 40 20 30 40 20 Content (H 3 P O 4 ), % ≥ 85.0 85.0 85.0 75.0 75.0 75.0 75.0~86.0% Chloride(Cl ) , % ≤ 0.0005 0.0005 0.001 0.0005 0.0005 0.001 Sulphates( SO 4 ), % ≤ 0.003 0.005 0.01 0.003 0.005 0.01 Iron(Fe), % ≤ 0.002 0.002 0.005 0.002 0.002 0.005 Arsenic (As) , % ≤ 0.0001 0.005 0.01 0.0001 0.005 0.01 0.00005 Arsenic (Pb), % ≤ 0.001 0.001 0.05 0.001 0.001 0.05 0.0005 Heavy metals ( F), % ≤ 0.0010 Easily oxidated matter( H 3 PO 3 ), % ≤ 0.012