Chromium(III) nitrate nonahydrate, ROTI®METIC 99,999 % (5N), Molar mass (M) 400,14 g/mol, Density (D) 1,8 g/cm³, CAS No. [7789-02-8], UN-Nr. 2720, EG-Nr. 236-921-1, Empirical formula Cr(NO3)3 · 9 H2O