21.0% white Crystal Ammonium Sulphate 
Product Description
Specifications:
Nitrogen:20.8%min Moisture:0.7max
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 | 20.8 | 20.5 |
Water content(H2O),% ≤ | 0.5 | 0.8 | 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 | - | - |
Packaging & Shipping
25kg/pp bag, 50kg/ pp bag, 1000kg / jumbo bag ,1200kg/jumbo bag