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A2140 Sigma-Aldrich

Ammonium aluminum sulfate dodecahydrate

ReagentPlus®, ≥99% (titration)

Synonym: Aluminum ammonium sulfate dodecahydrate, Ammonium alum

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Properties

Related Categories Aluminum Salts, Essential Chemicals, Research Essentials, Salts
Quality Level   100
product line   ReagentPlus®
assay   ≥99% (titration)
form   powder or crystals
pH   2.6 (25 °C, 100 g/L)
mp   93.5 °C (lit.)
SMILES string   [Al+3].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H][N+]([H])([H])[H].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
InChI   1S/Al.H3N.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;1H3;2*(H2,1,2,3,4);12*1H2/q+3;;;;;;;;;;;;;;;/p-3
InChI key   WZUKKIPWIPZMAS-UHFFFAOYSA-K

Description

General description

Ammonium aluminum sulfate dodecahydrate, commonly called as ammonium alum, is widely used in the water purification, cosmetic formulation, fertilizers and food preservation. Its thermal decomposition has been studied. It has high latent heat of 251kJkg-1 with a potential use in the heating system. Its utility as a flame-retardant for cotton fabric has been studied.

Application

Ammonium aluminum sulfate dodecahydrate may be used in the preparation of alum (Al(OH)3) gel and monodispersed yttrium aluminum garnet (YAG) powder.

Packaging

1 kg in poly bottle

500 g in poly bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
RTECS 
WS5640010
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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