ammonium sulphate:
1) Nitrogen: 21%min
2) Moisture: 0.5%max
3) Free acid (H2SO4): 0.05%max
4) ......

Molecular Formula: (NH4)2SO4

Molecular Weight: 132.13

Physicochemical Properties: white crystal.

Product Specification: GB/T19001-2000

Major indexes of agricultural and industrial grade:

1) Nitrogen: 21.0; 21.0 pct min

2) Moisture: 0.5; 0.5 pct max

3) Free acid (H2SO4): 0.05; 0.05 pct max

4) Ferric: 0.007; --- pct max

5) Arsenic: 0.0005; --- pct max

6) Heavy metal (based on Pb): 0.005; --- pct max

7) Water insoluble: 0.05; --- pct max

Packing: 25 kg/bag, plastic inside and knitting bag outside, or in terms of customer's requirement.