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Review Summary
Concentrated alum
Paper-maker's alum
Sulfate of alumina
Pale green to white in color and is available in powdered and granular forms
Can be used as a substitute for alum as a hardener (ratio = 2 parts aluminum sulfate as a substitute for 3 parts alum)
Al2(SO4)3 . 14H2O
100g (3.53oz)
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