USPUSP-NF
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Ammonium Alum
AINH4(SO4)2·12H2O 453.33
 AINH4(SO4)2 237.15
 Sulfuric acid, aluminum ammonium salt (2:1:1), dodecahydrate;
 Aluminum ammonium sulfate (1:1:2), dodecahydrate
 [7784-26-1] Anhydrous [7784-25-0]

DEFINITION

Ammonium Alum contains NLT 99.0% and NMT 100.5% of ammonium alum [AlNH4(SO4)2], calculated on the dried basis.

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