Ammionium Aluminum Sulphate
Ammonium aluminium sulfate, also known as ammonium alum or just alum, is a white crystalline double sulfate usually encountered as the dodecahydrate, formula (NH4)Al(SO4)2·12H2O. It is used in small amounts in a variety of niche applications.
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Molecular Formula
(NH4)Al(SO4)2
Appearance and Properties
Colorless glassy octahedral crystal to white granules or powder, odorless and slightly sweet, strong convergence. High brightness, high fineness, high quality, no agglomeration for long time.
Uses
Processing of baking powder, rubber processing, leather, processing of washing powder, feed processing, pencil production. It is used in water purification, in vegetable glues, in porcelain cements, in deodorants and in tanning, dyeing and in fireproofing textiles.
| ITEM | SPECIFICATION |
| Appearance | White crystal powder |
| Purity % | 99.3-100.5 |
| Fe % | 0.020 max |
| Insoluble mater in water % | 0.20 max |
| Water % | 4.0 max |
| As (mg/kg) | 2 max |
| Heavy Metal(as Pb)(mg/kg) | 20 max |
| Pb(mg/kg) | 10 max |
| Floride(as F)(mg/kg) | 30 max |
| Se(mg/kg) | 30 max |
