Magnesium acetate tetrahydrate, min. 99 %, CELLPURE®, Molar mass (M) 214,46 g/mol, Density (D) 1,45 g/cm³, CAS No. [16674-78-5], EG-Nr. 205-554-9, Empirical formula Mg(CH3COO)2 · 4 H2O