Aluminum Sulfate Octadecahydrate

White crystalline or crystalloid powder, 86.5 °C losing some gesso......

Specifications

aluminum sulfate
molecular formula:Al2(SO4)3.18H2O
CAS: 10043-01-3 
Appearance:White crystal powder

aluminum sulfate

Properties:

White crystalline or crystalloid powder, 86.5 °C losing some gesso, 250 °C lost all gesso, forming white powder. About 600 °C decomposition generated three alumina. Soluble in water, insoluble in alcohol. Become acidic aqueous solution.

Use:

Analytics reagents. Also used as mordant water-proofing agent, grease decoloring agents and used in leather, paper, pharmaceutical industry.

 

Details:

 

Test item	Specification
	Reagent grade	Pharmaceutical grade
Appearance	Conform	Conform
Assay [Al2(SO4)3·18H2O]/%	≥99.0	≥99.0
Clarify degrees test	Conform	Conform
Water insoluble/%	≤0.02	≤0.05
Chloride (Cl)/%	≤0.002	≤0.01
Ammonium salt (NH4)/%	≤0.005	≤0.02
Sodium (Na) /%	≤0.005	≤0.015
Ferric (Fe)/%	≤0.003	≤0.01
Heavy metal (Pb)/%	≤0.001	≤0.002
Alkali metal and alkaline metal /%	≤0.25	≤0.5

Resource:

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