- Description
ammonium sulfate 99% N 21% S 24% 2-5mm granular china manufacturer
1)Description
Ammonium sulphate is one of the most widely used nitrogen fertilizers. Ammonium sulphate
provides an equal balance of nitrogen and sulphur and can make crops thrive and improve fruit
quality and yield and also strengthen resistance to disaster . Ammonium sulphate is the best fast
releasing, quick acting and can be used directly for a wide range of soil and crops, and also as seed
fertilizers, base fertilizer and additional fertilizer.
2)Specifications:
Nitrogen:21%min Moisture:0.2max
Item | Supreme grade | First grade | Qualified grade |
Appearance | no visible mechanical impurity | no visible mechanical impurity | no visible mechanical impurity |
N content(dry basis),% ≥ | 21.0 | 21.0 | 20.5 |
Water content(H2O),% ≤ | 0.2 | 0.3 | 1.0 |
Free acid(H2SO4)content,% ≤ | 0.03 | 0.05 | 0.20 |
Fe content, % ≤ | 0.007 | – | – |
As content,% ≤ | 0.00005 | – | – |
Heavy metal(Pb)content,% ≤ | 0.005 | – | – |
Water insolubles,% ≤ | 0.01 | – | – |