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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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