Copper sulphate (CuSO₄) is a versatile inorganic salt, most commonly seen as bright blue crystals (copper(II) sulphate pentahydrate, CuSO₄·5H₂O), also called blue vitriol, which are soluble in water, form acidic solutions, and are used as fungicides, algaecides, and as a copper source in agriculture, but are toxic and require careful handling due to their corrosive and poisonous nature, affecting skin and internal systems.
