Compound Q&A
What is Ammonium alum (CAS: 7784-26-1)?
Answer
Ammonium alum (CAS: 7784-26-1) is a hydrated double sulfate of aluminum and ammonium. Its chemical formula is NH4Al(SO4)2·12H2O. It is a white crystalline powder with a characteristic sweet and astringent taste. It is insoluble in alcohol but soluble in water.
About
CAS No
7784-26-1
English Name
Ammonium alum
Molecular Formula
H28AlNO20S2
Molecular Weight
449.2968 g/mol
SMILES
[NH4+].O.O.O.O.O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Al+3]
InChIKey
WZUKKIPWIPZMAS-UHFFFAOYSA-K
Last Updated: 2025-09-02 18:52
