Europium(III) sulfate is a europium compound with the chemical formula (n = 0, 1, 4, or 8). It is a light pink crystalline solid, stable in air up to 670 °C. The octahydrate dehydrates to the anhydrous form at 375 °C.
Preparation Europium(III) sulfate can be prepared by reacting europium(III) oxide with sulfuric acid: Eu2O3 + 3 H2SO4 → Eu2(SO4)3 + 3 H2O
It can also be precipitated from a solution of europium(III) nitrate upon the addition of sulfuric acid: 2 Eu(NO3)3 + 3 H2SO4 → Eu2(SO4)3 + 6 HNO3
Reactions Europium(III) sulfate can be reduced to europium(II) sulfate with hydrogen gas at 480-500 °C. At temperatures between 600-1000 °C an oxysulfide (Eu2O2S) forms instead.
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