Tetrasodium pyrophosphate CAS NO.7722-88-5

Chemical formula: Na4P2O7 Molecular weight: 265.9 Standard executed: HG/T2968-1999 Properties: White powder, easily soluble in water, relative density is 2.45, melting point is 890, its water solut…

Chemical formula: Na4P2O7 Molecular weight: 265.9 Standard executed: HG/T2968-1999 Properties: White powder, easily soluble in water, relative density is 2.45, melting point is 890, its water solution is alkaline, PH value of 1% water solution is 9.9-10.7 Technical Specifications: Main content %≥ 96.5 P2O5 %≥ 51.5 Phosphate Qualified pH of 1% water solution 9.9-10.7 Sieve test(Through60mesh) %≥ 90 Heavy metal, as Pb %≤ 0.001 Arsenic, as As %≤ 0.0003 Fluoride, as F %≤ 0.005 Water insoluble %≤ 0.2