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Copper sulfate

The product is an odorless blue crystal and the proportion is 2.284g／cm³. It is soluble in the water and dilute acetic acid and its aqueous solution is characteristic of weak acidity. The product will be gradually weathered in the dry air and the surface of the product will turn into white powder. Four crystals of the product will be lost upon heating to 110°C. If the temperature is higher than 150°C, white and readily water-absorbing copper sulfate pentahydrate will be formed.

Application

The product can be used as sulphate copper and wide temperature as full bright acid copper ion additives.
Due to impurities in the product of its calcium, nickel, arsenic, cobalt, iron and lead levels lower than the national control of chemical reagents sulfate GB665-88 standard, the product is mainly used in the advanced electroplating occasions such as the scientific research and IT industry.
In the manufacturing industry of electronic circuit board, the application of high purity refined copper sulphate can avoid the involvement of various kinds of metal impurities and organic impurities into the plating solution to the utmost extent. Therefore, it can effectively prevent the coating have the problems of pinhole, pitting, black coating, mildew and other failures, ensure the uniformity of the thickness and distribution of the layout and the deep plating capacity for deep holes and small holes when plating, and assist to improve ductility, tensile strength and other aspects of physical properties of coating.

Manufacturing processes

Chemical Specification

Super pure copper sulfate

Item Norm Item Norm
CuSO4.5H2O，% ≥ 99.5 Co，% ≤ 0.0005
Cu，% ≥ 25.2 Cd，% ≤ 0.0003
Fe，% ≤ 0.001 Ca，% ≤ 0.0005
Ni，% ≤ 0.0005 As，% ≤ 0.0005
Zn，% ≤ 0.001 Cl，% ≤ 0.001
Pb，% ≤ 0.001 Water insoluble content，% ≤ 0.005
PH（5%，20℃）

3.5-4.5



Copper sulfate

Item Norm Item Norm
CuSO4.5H2O，% ≥ 98 Cl，% ≤ 0.01
As，% ≤ 0.0010 Water insoluble content，% ≤ 0.2
Pb，% ≤ 0.0050 Acidity（H2SO4） 0.2
Zn，% ≤ 0.0050 PH（5%，20℃） 3.5-4.5

High purity copper sulfate

Item Norm Item Norm
CuSO4.5H2O，% ≥ 99 Co，% ≤ 0.0005
Fe，% ≤ 0.002 Ca，% ≤ 0.0005
Ni，% ≤ 0.0005 As，% ≤ 0.0005
Zn，% ≤ 0.001 Cl，% ≤ 0.002
Pb，% ≤ 0.001 Water insoluble content，% ≤ 0.005
PH（5%，20℃） 3.5-4.5

Package