- Description
powder crystal ammonium sulphate
1. Captolactam grade: granular, white or off white, N 21% min, size: 2-4mm
2. Steel grade: Powder or granular, white or off white, N 20.5% min
3. Manufacture: SINOPEC, TCC, Shougang steel, Bao steel
Technical specifications of Ammonia sulfate(National standard GB535-1995)
Ammonia sulfate | |||
Item | Supreme grade | First grade | Qualified grade |
Appearance | White crystal, 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 | / | / |
Note: when ammonium sulphate is used in agriculture, it is not necessary to check the content of Fe, As, heavy metal and water in solubles. |
Packaging & Shipping
1. Packed in PP woven bags with PE film liner. Net weight of each bag: 25kgs, 50kgs, 1000kgs.
2. Shipping mark as per sale’s mark.
3. Shpped in 20ft container or in bulk.