Beryllium acetate basic, ROTI®METIC 99.999 % (5N), Molar mass (M) 406,16 g/mol, Density (D) 1,36 g/cm³, CAS No. [19049-40-2], UN-Nr. 1566, EG-Nr. 242-785-4, Empirical formula Be4O(C2H3O2)6