Description CAS#: 7757-93-9 | Formula: CaHPO4 | Specifications: Assay 98.0 - 103.0 %, Insolubles in Dil HCl (%) 0.2 % Max, Iron 0.05 % Max, Lead 0.0002 % Max, LOD @ 105 C (%) 0.5 % Max