SZSE：002741
Chemical Reagents
tri-Potassium phosphate?trihydrateCOA Report
  • CAS No.：22763-03-7
  • Molecular weight：266.31
  • Aliases：Potassium phosphate tribasic
  • Molecular formula：K3PO4·3H2O
  • EC No.：231-907-1
  • HS-No：28352400
Information
Specification category：
Product No. Product name specifications
1.01768.010 Tripotassium phosphate trihydrate AR500g
1.01768.030 Tripotassium phosphate trihydrate CP500g
Characteristic： Appearance and properties: Colorless,odorless solid.
pH value: 12(10g/L H2O,20℃)
Bulk density(kg/m3): 900
Density(g/cm3): 3.12(20℃)
Thermal decomposition temperature(℃): >70
Solubility: Soluble in water(1650 g/L,20℃).
Technical indicators：
Item AR CP
Assay ≥98.0% ≥97.0%
Clarity of solution Pass Pass
Free alkali(as KOH) ≤1.0% ≤3.0%
Di-Potassium hydrogen phosphate(as KH2PO4·3H2O) ≤1.0% ≤1.0%
Chloride(Cl) ≤0.003% ≤0.01%
Sulfate(SO4) ≤0.01% ≤0.02%
Total nitrogen(N) ≤0.001% ≤0.002%
Carbonate(CO3 Pass Pass
Sodium(Na) ≤0.02% ≤0.05%
Iron(Fe) ≤0.002% ≤0.004%
Arsenic(As) ≤0.0001% ≤0.0003%
Heavy metals(as Pb) ≤0.001% ≤0.002%
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