Copper(II) sulfate, also known as copper sulphate, are the inorganic compounds with the chemical formula CuSO4(H2O)x, where x can range from 0 to 5. The pentahydrate (x = 5) is the most common form.
Chemical formula：CuSO4 (anhydrous) CuSO4·5H2O (pentahydrate)
Molar mass：159.609 g/mol (anhydrous) 249.685 g/mol (pentahydrate)
Appearance：gray-white (anhydrous) blue (pentahydrate)
Density：3.60 g/cm3 (anhydrous) 2.286 g/cm3 (pentahydrate)
Melting point：110 °C (230 °F; 383 K) decomposes (·5H2O) if pentahydrate
<560 °C decomposes if anhydrous
Solubility in water：1.055 molal (10 °C) 1.26 molal (20 °C) 1.502 molal (30 °C)
Solubility：anhydrous insoluble in ethanol pentahydrate
soluble in methanol 10.4 g/L (18 °C) insoluble in ethanol, insoluble in acetone
Magnetic susceptibility (χ):+1330·10−6 cm3/mol
Refractive index (nD):1.724–1.739 (anhydrous) 1.514–1.544 (pentahydrate)
Copper sulfate is an important raw material for preparing other copper-containing compounds.Bordeaux liquor can be mixed with lime milk and used as fungicide.Also used in the electrolysis of refined copper electrolyte.
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