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Aluminum sulfate

Aluminum sulfate

Aluminum sulfate

Aluminum sulfate octadecahydrate

 

Molecular formula: Al2(SO4)3·18H2O

Molecular weight: 666.40

[Character] White crystalline or crystalline powder. The relative density of 1.69,86.5℃ partial crystallization water loss. It decomposes at about 600℃ to form trioxide. Soluble in water, insoluble in alcohol. Aqueous solutions are acidic.

[To use] Used to analyze reagents. Also used as mordant, waterproofing agent, grease decolorizing agent and used in leather, paper, pharmaceutical industry.

[Standard]The impurity content is calculated by the highest content

                                 Specification

Name of index

Analytically pure-AR

Chemically pure-CP

Content [Al2(SO4)3·18H2O] /%

≥99.0

≥99.0

Clarity test

qualified

qualified

Aqueous reaction

qualified

qualified

Water insolubles

≤0.02

≤0.05

Chloride(Cl)

≤0.002

≤0.01

Ammonium salt(NH4)

≤0.005

≤0.02

Ferrum (Fe)

≤0.003

≤0.01

Heavy metal(Pb)

≤0.001

≤0.002

Alkali and alkaline earth metals

(as sulfate)

≤0.25

≤0.5

[Packing] Plastic inside and outside woven, kraft paper bag or cardboard bucket, net weight 25kg.

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