Copper(II) Sulfate Pentahydrate 99%
Copper(II) sulfate, also known as cupric sulfate, or copper sulphate, is the inorganic compoundwith the chemical formulaCuSO4(H2O)x, where x can range from 0 to 5. The pentahydrate (x = 5) is the most common form. The pentahydrate (CuSO4·5H2O), the most commonly encountered salt, is bright blue. It exothermicallydissolves in water to give the aquo complex[Cu(H2O)6]2+, which has octahedral molecular geometry. The structure of the solid pentahydrate reveals a polymeric structure wherein copper is again octahedral but bound to four water ligands.
| CuSO4 (anhydrous) CuSO4·5H2O (pentahydrate) |
|
| Molar mass | 159.609 g/mol (anhydrous)[1] 249.685 g/mol (pentahydrate)[1] |
| Appearance | gray-white (anhydrous) blue (pentahydrate) |
| Density | 3.60 g/cm3 (anhydrous)[1] 2.286 g/cm3 (pentahydrate)[1] |
| Melting point | 110 °C (230 °F; 383 K) decomposes (·5H2O)[1] <560 °C decomposes[1] |
| 1.055 molal (10 °C) 1.26 molal (20 °C) 1.502 molal (30 °C)[2] |
|
| Solubility |
anhydrous insoluble in ethanol[1] pentahydrate soluble in methanol[1] 10.4 g/L (18 °C) insoluble in ethanol, insoluble in acetone |
|
+1330·10−6 cm3/mol |