Formula: Ca ( H2PO4) 2 • H2O CAS Number: 7758-23-8 Standard executed: National standard Packing and storage: In 25kg, 50kg, 1000kg net bags, store at a cool, dry and well ventilated place. Guaranteed Technical Specifications: Specifications Feed grade Food grade Appearance White powderContent ( Ca) 13-18 15.2-17.0 Content Ca( H2PO4) 2 95.0 95.0 Total P content min% 22 22 Arsenic max 40ppm 3ppm Heavy metals( as Pb) max30ppm 20ppmFluorine max 0.18% 25ppm