Sudan IV (C.I. 26105), for microscopy, Molar mass (M) 380,45 g/mol, Density (D) 1,331 g/cm³, Flash point (flp) >289 °C, Boiling point (bp) >238 °C, CAS No. [85-83-6], EG-Nr. 201-635-8, Empirical formula C24H20N4O