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Aluminium Ammonium Sulphate Dodecahydrate 98% Extrapure
Ammonium alum ;Ammonium Aluminium Sulphate
Product Code. |
00115 |
Grade |
Extrapure |
Purity |
Min 98% |
CAS No. |
7784-26-1 |
Molecular Formula |
NH4AI(SO4)2.12H2O |
Molecular Weight |
453.32 |
H.S.Code |
2833.30100 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White powder |
Odour |
Odorless |
| pH value |
2.6 |
Melting point/ Freezing point [°C] |
93.5 °C |
Boiling point [°C] |
280°C |
| Density [g/cm3] |
1.65 |
Solubility in water [% weight] |
14% in water |
Packaging
Specification
| Appearance | White crystalline powder |
| Assay (complexometric) | Min 98.0% |
| Chloride (Cl) | Max 0.005% |
| Heavy metal (as Pb) | Max 0.005% |
| Arsenic (As) | Max 0.003% |
| Iron (Fe) | Max 0.001% |
| Substance not precepitate by NH3 (as SO4) | Max 0.3% |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338