Nickel Sulphate

Nickel sulfate is a metal compound with the formula NiSO4. The non-hydrated form of nickel sulfate has a yellowish color at room temperature, while the hexahydrate and heptahydrate form have a blue color.
It resembles copper sulfate in color. It dissolves very well in water.
Formula: NiSO₄
Molar mass: 154.75 g/mol
Density: 3.68 g/cm³
Boiling point: 840 °C