Identification | ||
Name | Aluminium ammonium sulfate dodecahydrate | |
Molecular Formula | AlNH4.(SO4)2.12(H2O) | |
Molecular Weight | 453.33 | |
CAS Registry Number | 7784-26-1 |
Properties | |
Density | 1.64 |
Melting point | 93.5 ºC |
Boiling point | 200 ºC |
Tests | Specification | Results |
Appearance | White powder | White powder |
Water insoluble matter | ≤0.2% | 0.05% |
F | ≤30ppm | 18ppm |
As | ≤2ppm | 1ppm |
Heavy metal(Pb) | ≤20ppm | 9ppm |
Pb | ≤10ppm | 6ppm |
Se | ≤30ppm | 16ppm |
Moisture | ≤4.0% | 3.72% |
Assay of NH4Al(SO4)2·12H2O | 99.5%~100.5% | 99.8% |
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