Grade : Animal Feed...HS Code:28352500 ... CAS NO: 7789-77-7.. Chemical Formula: CaHPO4 ·2H20 Chemical Properties: Description White or Off white Powder . Moisture : 5.00 % Max Calcium : 23.00 %Min Phosphorus : 18.00 %Min Fluorine :0.10 %Max Acid Insoluble : 1.0 %Max Ash Content : 73.5-78.0 % Lead : 30.00 Ppm Max Arsenic : 10.00 Ppm Max Organic/Protein us Impurities :Nil Fineness : 90 % will pass through 200 micron screen