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Ammonium sulfate CAS 7783-20-2
Ammonium sulfate CAS 7783-20Mainly used as fertilizer, applicable to all kinds of soil and crop.
Can also be used in textile, leather, , etc
the COA of Ammonium sulfate CAS 7783-20-2
Index | Supreme Grade | First Grade | Qualified Grade |
Appearance | White or off-white granula crystal, no visible mechanical impurity | ||
N content (dry basis)% ≥ | 21.0 | 21.0 | 20.5 |
Water(H2O)content%≤ | 0.2 | 0.3 | 1.0 |
Free acid(H2SO4)%≤ | 0.03 | 0.05 | 0.20 |
Iron (Fe)content%≤ | 0.007 | -- | -- |
Heavy metal(pb)% ≤ | 0.005 | -- | -- |
Insoluble substance in water %≤ | 0.01 | -- | -- |
Note: When ammonium sulfate is used in agriculture,it is not necessary to check the content of Fe,As,heavy metal and water insolubles. | |||
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