Granulated industrial fertiliser is created during caprolactam production and containing nitrogen in ammonium form and sulphur in the form of sulphuric anhydride. It also contains a small amount of ammonium nitrate, the concentration of which does not exceed 1.5 %. It is used for direct fertilisation.
| Total (ammoniacal) nitrogen as N, min. |
% of weight |
20,6 |
SOP-A-169 |
| Water-soluble sulphur as S, min. |
% weight |
23,6 |
SOP-A-169 |
| Humidity, max. |
% weight |
0,8 |
SOP-A-169 |
| Free sulphuric acid, max. |
% weight |
0,1 |
SOP-A-169 |
| Fraction 2 – 5 mm, min. |
% weight |
90 |
SOP-A-171 |
| Presence of the hydrophobisation mixture |
– |
satisfactory |
SOP-A-169 |
SPOLSAN® G complies with the requirements of Decree No. 474/2000 Sb.:
| Cadmium (Cd), max. |
mg/kg |
1 |
SOP-A-170 |
| Lead (Pb), max. |
mg/kg |
10 |
SOP-A-170 |
| Chromium (Cr), max. |
mg/kg |
50 |
SOP-A-170 |
| Mercury (Hg), max. |
mg/kg |
1,0 |
SOP-A-170 |
| Arsenic (As), max. |
mg/kg |
20 |
SOP-A-170 |