Ammonium hexafluorosilicate, ROTI®METIC 99,999 % (5N), Molar mass (M) 178,14 g/mol, Density (D) 2,011 g/cm³, CAS No. [16919-19-0], UN-Nr. 2854, EG-Nr. 240-968-3, Empirical formula (NH4)2SiF6