Top Quality Phosphoric Inorganic Acids Tech Grade

Phosphoric acid technical grade is an important chemical raw material. The main functions are as follows: the surface of the metal is treated to generate an insoluble phosphate film on the surface of the metal to protect the metal from corrosion. Phosphoric acid technical grade and nitric acid are mixed as chemical polishes to improve the finish of metal surfaces. Specifications: Items Units Standards Color  Apha ≤20 H3PO4  %  ≥75.0 / 81.0 / 85.0 Arsenic（As） % ≤0.0050 Heavy metal（Pb） % ≤0.0010 Chlorine（Cl） % ≤0.0005 Sulphate (SO4) % ≤0.0050 Ferric (Fe) %…