Aluminium Ammonium Sulphate Dodecahydrate 98% Extra Pure / CAS 7784-26-1
Aluminium Ammonium Sulphate Dodecahydrate, also known as ammonium alum, is a white crystalline powder.
| CAS No. | 7784-26-1 |
|---|---|
| Molecular Formula | NH4Al(SO4)2�12H2O |
| Molecular Weight | 453.32 g/mol |
| Shelf Life | 5 years |
| Appearance | White crystalline powder |
| Purity | Min. 98% |
| Grade | Extra Pure |
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Product Details
Aluminium Ammonium Sulphate Dodecahydrate, also known as ammonium alum, is an Extra Pure white crystalline powder for laboratory use.
Product specifications
| CAS No. | 7784-26-1 |
|---|---|
| Article No. | A-00482 |
| HSN Code | 28333010 |
| Purity | Min. 98% |
| Grade | Extra Pure |
| Molecular Formula | NH4Al(SO4)2�12H2O |
| Molecular Weight | 453.32 g/mol |
| Appearance | White crystalline powder |
| Melting Point | 94�C |
| Boiling Point | 200�C |
| Water Solubility | 14% in water |
| Chloride (Cl) | Max. 0.005% |
| Arsenic (As) | Max. 0.003% |
| Heavy Metals (as Pb) | Max. 0.005% |
| Iron (Fe) | Max. 0.001% |
| pH (5% aqueous solution) | 3.0 |
| Substances Not Precipitated by Ammonia (as Sulphate) | Max. 0.3% |
| Shelf Life | 5 years |
| Available Pack Sizes | 500 g |
Applications
Used in laboratory studies of alum crystallization and crystal growth. Ammonium alum also has established uses as a mordant and as a clarifying agent in water treatment.