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Ammonium sulfate |
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 Ammonium sulfate(ammonium sulphate; ammonia sulfate)
Molecular formula:(NH4)2SO4
Molecular weight:132.14
Uses: quick acting fertilizer, used in salting-out in drug, catalysis of caramel color of food, growth of yeast, dyeing aid of acid dye and deliming agent of leather.
Item |
Index |
Industrial grade |
Agricultural grade |
| N(as Dry), % ≥ |
21.0 |
21.0 |
20.8 |
| Moisture(H2O), % ≤ |
0.2 |
0.5 |
1.0 |
| Free acid(H2SO4), % ≤ |
0.05 |
0.08 |
0.02 |
| Fe , % ≤ |
0.07 |
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| As , % ≤ |
0.005 |
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| Heavy metal(as Pb), % ≤ |
0.005 |
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| Water insoluble matter, % ≤ |
0.05 |
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