Keywords: Sudan-II-3D-balls.png Ball-and-stick model of the Sudan II molecule an orange-red azo dye used for staining of non-polar substances Derived from File Sudan-I-3D-balls png and File Trans-but-2-ene-3D-balls png 2010-07-25 Jynto and Ben Mills Azo dyes Ball-and-stick models 2-naphthols Xylenes Images by Jynto |