SZSE：002741
Chemical Reagents
Aluminum potassium sulfate?dodecahydrateCOA Report
  • CAS No.：7784-24-9
  • Molecular weight：474.39
  • Aliases：Alum potassium
  • Molecular formula：KAl(SO4)2·12H2O
  • EC No.：233-141-3
  • HS-No：28333000
Information
Specification category：
Product No. Product name specifications
1.01771.010 Aluminum potassium sulfate dodecahydrate AR500g
1.01771.020 Aluminum potassium sulfate dodecahydrate CP500g
1.01771.030 Aluminum potassium sulfate dodecahydrate CP40kg
1.01771.040 Aluminum potassium sulfate dodecahydrate AR40kg
Characteristic： Appearance and properties: Colorless,odorless solid.
pH value: 3.0~3.5(100g/L H2O,20℃)
Relative density: 1.75(water=1)(20℃)
Melting point(℃): 92.5
Concentration: Pure
Solubility: Dissolve easily in glycerol, soluble in water. The aqueous solution is acidic.Aluminum hydroxide precipitation jelly appears after hydrolysis. Insoluble in alcohol and acetone.
Technical indicators：
Item AR CP
Assay ≥99.5% ≥99.0%
pH-value(50g/L solution,25℃) 3.0~3.5 3.0~3.5
Clarity of solution Pass3 Pass4
Insoluble matter in water ≤0.005% ≤0.01%
Chloride(Cl) ≤0.0005% ≤0.004%
Ammonium(NH4) ≤0.005% ≤0.01%
Arsenic(As) ≤0.00005% ≤0.0001%
Sodium(Na) ≤0.02% ≤0.05%
Iron(Fe) ≤0.001% ≤0.002%
Heavy metals(as Pb) ≤0.0005% ≤0.002%
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