
The solid product is white granular or lumpy, white glossy crystals. It is stable in air. 86.5°C loses part of the crystalline water, 250°C loses all the crystalline water. Easily soluble in water, almost insoluble in ethanol, the solution is acidic. Iron-free aluminium sulphate is a widely used industrial reagent, often confused with alum (both potassium aluminium sulphate dodecahydrate). Aluminium sulphate is commonly used as a flocculant in purified drinking water and wastewater treatment plants, as well as in the paper industry.
、
ITEM
|
SPECIFICATION
|
RESULT
|
Alumina content (active product - Al2O3):
|
16.5%-17%
|
16.7%
|
Iron (Fe) content %, max
|
|
0.003 |
Water insoluble matter %, max
|
0.05 |
0.01 |
PH value 1% aqueous solution, min
|
3.0 |
3.1 |
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