1. Fine-dispersed copper sulphate destined for using in feed additives has to be of grain-size (fractional) composition as follows:
1st trade class — not more than 0.315 millimeters;
2nd trade class — from 0.315 to 0.8 millimeters;
3rd trade class — not more than 0.8 millimeters.
1.1. 3rd trade class is homogeneous mixture of 1st trade class and 2nd trade class. 3rd trade class can be replaced with 2nd trade class.
1.2. By agreement with commercial departments it is possible to produce fine-dispersed copper sulphate of other gran-sized compositions.
1.4. Other requirements for physical and chemical characteristics are identical for all trade classes.
2. Anti-caking treatment is necessary in proportion of 1.0–2 per cent of whole amount of the product. An anti-caking agent can be silicon dioxide ( Е 551 ) or sodium aluminum silicate ( Е554).
3. Chemical compositions of all trade classes have to correspond with requirements specified in Table 01.
| Mass concentration | percent |
|
Copper sulphate pentahydrate ( CuSO 4 •5H 2 O) |
99. 5 |
|
Water insoluble residue, not more |
0.004 |
|
Nitrogen (N), not more |
0.002 |
|
CLORIDE (Cl), not more |
0.0005 |
|
Iron (Fe), not more |
0.005 |
|
Arsenic (As), not more |
0.00001 |
|
Substances not precipitaled by hydrogen sulfide as sulphates, not more |
0.1 |
|
Antimony (Sb), not more |
0.001 |
|
Lead (Pb), not more |
0.003 |
|
Cadmium (Cd), not more |
0.00004 |
|
Nickel (Ni), not more |
0.002 |
|
Mercury (Hg), not more |
0.000001 |
|
Zink (Zn), not more |
0. 003 |
|
Calcium (Ca), not more |
0.0008 |
|
Magnesium (Mg), not more |
0.0008 |
|
Chromium (Cr) not more |
0.0004 |
|
Characteristic |
Minimal and maximal mass concentration |
|
Copper sulphate pentahydrate (nonmetering anticaking), not more |
99. 01 % |
|
Copper (Cu ), not more |
25. 2 % |
|
Free sulfuric acid |
0. 09– 0. 2 % |
|
Arsenic ( As) |
0. 9– 2 ррm |
|
Iron (Fe) , not more |
200 ррm |
|
Lead (Pb) |
9–60 ррm |
|
Nickel (Ni) |
9–90 ррm |
|
Zink (Zn) |
10–600 ррm |
|
Cadmium (Cd) |
0. 9–9 ррm |
|
Mercury (Hg) |
0. 001– 0. 1 ррm |
|
Dioxins, dibenzofurans (TEQ) |
1nanogram /kilo |
|
Thallium (Tl) , not more |
9 ррm |
|
Antimony (Sb) , not more |
50 ррm |
|
Chromium (Cr), not more |
60 ррm |
|
Magnesium (Mg) , not more |
50 ррm |
|
Calcium (Ca) , not more |
50 ррm |
|
Chlorine (Cl) , not more |
60 ррm |
|
Fluorine (F), not more |
10 ррm |
| Physical and chemical characteristics |
Typical for NEKK OJSC |
Guaranteed minimum — Mark А First class by GOST 19347-99 |
|
|
Mass concentration of copper sulphate |
in terms of CuSO4•5H2O |
99.5 % |
98 % |
|
in terms of copper |
25.32 % |
24,94 % |
|
|
Mass concentration of iron (Fe) |
0.02 % |
0.04 % |
|
|
Mass concentration of free sulfuric acid |
0.1 % |
0.25 % |
|
|
Mass concentration of water insoluble residue |
0.02 % |
0.05 % |
|
|
Mass concentration of arsenic ( Аs) |
0.00001 % |
0.0002 % |
|
|
Mass concentration of antimony (Sb) |
0.001 % |
0.005 % |
|
|
Mass concentration of lead (Pb) |
0.006 % |
0.01 % |
|
|
Mass concentration of cadmium (Cd) |
0.00004 % |
0.001 % |
|
|
Mass concentration of nickel (Ni) |
0.002 % |
0.005 % |
|
|
Mass concentration of mercury (Hg) |
0.0000001 % |
0.0001 % |
|
|
Mass concentration of zinc (Zn) |
0.003 % |
0.01 % |
|
|
Mass concentration of calcium (Ca) |
0.0008 % |
0.006 % |
|
|
Mass concentration of magnesium (Mg) |
0.0008 % |
0.005 % |
|
|
Mass concentration of chromium (Cr) |
0.0004 % |
not regulated |