1lb Iron (II) Sulfate

Iron(II) sulfate, also known as ferrous sulfate or historically as copperas or green vitriol, is a chemical compound with the formula FeSO4. It consists of iron in the +2 oxidation state and sulfate ions. The compound is commonly encountered in its hydrated form, particularly the heptahydrate ( FeSO4⋅7H2O ), which appears as blue-green crystals.