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SZSE：002741
Chemical Reagents
Potassium stannate trihydrate COA Report
  • CAS No.：12125-03-0
  • Molecular weight：298.95
  • Aliases：Potassium stannate trihydrate
  • Molecular formula：K2SnO3?3H2O
  • EC No.：234-721-9
Information
Specification category：
Product No. Product name specifications
1.01736.010 Potassium stannate trihydrate Spec25kg/Drum
1.01736.040 Potassium stannate trihydrate AR25kg/Drum
Characteristic： Appearance and properties: White or light brown crystal powder.
Relative density: 3.197(water=1)(25℃)
Melting point(℃): 140
Solubility: Dissolve easily in water(1105 g/L,15℃). Its aqueous solution is alkaline. Insoluble in alcohol and acetone.
Technical indicators：
Item AR CP
Assay(K2SnO4·3H2O) ≥97.0% ≥96.0%
Insoluble matter in water Pass Pass
Free alkali(as KOH) ≤1.0% ≤1.5%
Chloride(Cl) ≤0.02% ≤0.04%
Iron(Fe) ≤0.005% ≤0.01%
Sodium(Na) ≤0.1% ≤0.15%
Heavy metals(as Pb) ≤0.005% ≤0.01%
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