无水硫酸铜，Copper(II) sulfate；anhydrous, free-flowing, Redi-Dri™, ≥99.99% trace metals basis

The anhydrous form of Copper(II) sulfate is a white to light grey salt. It occurs naturally as the mineral hydrocyanite. The salt is soluble in water and insoluble in ethanol and acetone. The anhydrous form decomposes to its oxide at temperatures above 600 °C.
In industrial preparation of CuSO₄, a hot mixture of dilute sulfuric acid and scrap copper is exposed to air flow.
The resulting salt is purified and dehydrated to yield the anhydrous form.
Copper sulfate is corrosive and behaves as an acidic salt. Aqueous solutions of Copper(II) sulfate corrode steel and iron.

 

A major application of Copper(II) sulfate is as a source of copper for electroplating copper films. Electroplating copper from copper sulfate is used extensively in semiconductor packaging, for example in fabricating copper interconnects in silicon integrated circuits. It is used in the dual damascene technique, plating through-silicon vias, and constructing copper pillars. Copper sulfate is also used to prepare copper foil, by electrodepositing copper onto a rolling drum and simultaneously coiling the produced foil on a second roller.
Researchers have also used Copper(II) sulfate as a copper source to prepare copper nanoparticles[1] and copper sulfide nanoparticles[2]. CuSO₄ can also be used to synthesize copper complexes such as copper hexaiminotriphenylene metal organic frameworks[3] and protein-copper nanoflowers[4].

 

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