Europium(II) sulfate is the inorganic compound with the formula EuSO<sub>4</sub>. Two polymorphs are known, ñ and the more stable ò. Both are colorless. The ò polymorph is isostructural with barium sulfate, hence it is insoluble in water.
The salt is generated by addition of soluble europium(II) salts to dilute sulfuric acid.
It can also be prepared by the reduction of europium(III) sulfate with hydrogen at 480-500 ðC.