Copper sulphate

Copper sulphate is used together with sodium aluminate as an algaecide in ponds and swimming pools. Both these preparations should be added to chlorinated water alternately every eight days. The physical properties of copper sulphate (CuSO4) are as follows: its molecular mass is 159.6 g/mol, it decomposes below boiling point at 650°C, its density is 3.6g/cm³ and its solubility in water is 20.3 g per 100 ml at 20°C.