Physical and chemical characteristics

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 0.45 millimeters;

  • 2nd trade class — from 0.2 to 0.8 millimeters;

  • 3rd trade class — not more than 0.8 millimeters.

  • 4th trade class — not more than 0.63 millimeters.

1.1. 3rd trade class is homogeneous mixture of 1st trade class and 2nd trade class.

1.2. By agreement with commercial departments it is possible to produce fine-dispersed copper sulphate of other gran-sized compositions.

1.3. 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.

Table 01

Mass concentration

percent (%)

Copper sulphate pentahydrate ( CuSO 4 •5H 2 O)

98.6

Water insoluble residue, not more

0.004

Nitrogen (N), not more

0.002

CLORIDE (Cl), not more

0.0005

Iron (Fe), not more

0.020

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

0.005

Cadmium (Cd), not more

0.0001

Nickel (Ni), not more

0.003

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