Nickel(II) carbonate, basic hydrate, 40 % Ni, p.a., paste, Molar mass (M) 304,12 g/mol, Density (D) 2,96 g/cm³, CAS No. [12607-70-4], UN-Nr. 3288, EG-Nr. 235-715-9, Empirical formula NiCO3 x Ni(OH)2 x H2O