What is copper sulfate called?

Copper sulfate is known by several names including blue vitriol, bluestone, and copper(II) sulfate.

The compound has various names depending on context and historical usage:

• Copper(II) sulfate: The systematic IUPAC name
• Blue vitriol: Traditional name used in older texts
• Bluestone: Common agricultural name
• Cupric sulfate: Alternative chemical name

The pentahydrate form (CuSO4·5H2O) is sometimes specifically called copper sulfate pentahydrate or blue copperas.

Important Notes:

• Multiple names for the same compound
• "Blue vitriol" refers to its blue crystal appearance
• "Copper(II)" indicates the oxidation state of copper
• Used interchangeably in different industries