Copper Sulphate, Density : 3.6 g/cm3

Celluloid trimetric crystal or powder in blue ordorlessness, it will be efflorescent slowly in dry open air and the surface will become white powder heated to 45�, loss one crystal water; at 102�, loss tow crystal water; at 113�, loss 4 crystal water, become white copper sulphate mono; at 258�, loss all crystal water, become white-green copper sulphate anhydrous in powder, at 650�, it will decompose to cupric oxid powder in black and liberate so3.
It is soluble in water, its liquid react weak acid, slightly soluble in methanol, insoluble in ethanol anhydrous.