PHOSPHORIC ACID Phosphoric Acid Tech Grade Purity( H3PO4) % 85Min Chloride ( Cl) % 5 ppm Max As% 0.5 ppm Max Heavy Metals( Pb) % 1 ppm Max Phosphoric Acid Food Grade Purity( H3PO4) % 85Min As% 0.00005 Max Pb% 0.0005 Heavy Metals( F) % 0.001 Appearance: Colorless liquid Usage: Used as cleaner for printed circuit , acidic flavoring for food, nutriment for yeast, also for use of producing different phosphates