Copper sulphate is a blue crystalline powder or granulate. It slowly effloresces in air. It can be easily dehydrated to its gray anhydrous form by heating, then changed by to crystals by adding water.
It is made by exposing copper or copper oxide to a dilute sulfuric acid and then evaporating and the crude sulphate to purify by recystallization. Many grades are available and huge amounts are manufactured so that less pure grades and inexpensive.
It is soluble in water, methanol, slightly soluble in alcohol and-glycerol.
Application
Copper sulphate is used in
Agricultural chemicals
Feeds
Germicides - in the textile and leather industries
Pigments
Electric batteries
Reagent in analytical chemistry
Medicine
Wood preservative
For engraving and lithography
Mining and petroleum industries
Synthetic rubber
Steel manufacture
Asphalts manufacture
The anhydrous salt is used as a dehydrating agent
Copper sulfate is employed in ceramics for metallic coloration
Sometimes sprayed as a solution or used as a creamy paste on biscuit for pit firing
Technical Specifications
Parameters
Unit
Specification
Appearance
Blue Coloured Powder & Crystals
Copper as Cu
%
24.50 Min
Nickel as Ni
%
0.03 Max
Iron as Fe
%
0.20 Max
Lead as Pb
%
0.002 Max
Cadmium as Cd
%
0.001 Max
Arsenic as As
%
0.0005 Max
Mercury as Hg
%
0.0005 Max
Insoluble matter in water
%
0.02 Max
pH in 5% Solution
3.50 Min
Packing
Blue Crystals / Powder available in 50 Kg HDPE bags with Liner, for waterproof packing
