Discover copper sulphate (CuSO₄ ): structure, blue vitriol formula, properties, preparation, reactions, and top uses in labs and real life. Explore copper sulfate (CuSO₄ ), its vivid blue pentahydrate form, chemical & physical properties, synthesis, and diverse applications from fungicides to industrial uses. Commercial copper sulfate is usually about 98% pure copper sulfate , and may contain traces of water. Anhydrous copper sulfate is 39.81% copper and 60.19% sulfate by mass, and in its blue, hydrous form, it is 25.47% copper, 38.47% sulfate (12.82% sulfur) and 36.06% water by mass. Copper Sulfate , also known as cupric sulfate , is a chemical compound with the formula CuSO 4. This highly soluble, crystalline material plays a vital role in a wide range of industries, with applications spanning from agriculture to public health.