SODIUM ACID PYROPHOSPHATE of product

ITEMS SPECIFICATION RESULTS Assay(Na2H2P2O7 ) 95 min 95.3% P2O5 63.0-64.0min 63.86%   Water insoluble matter 0.1max 0.05% PH value (1% water solution) 3.5-4.5 4.1 Whiteness 90.0min 92.2 Ortho Phosphates pass pass Size(through 60 mesh sieve) 90.0 92.0 Heavy metal(Pb) 0.001max 0.0008 As 0.0003max 0.00018 Fluoride(F) 0.005max 0.002 Loss on ignition(105℃) 0.5max 0.4 Conclusion Pass phosphates,NH4H2PO4,Inorganic compounds,Inorganic salt compounds,White crystalline powder