In the course of studies to establish the existence of the 2, 4-dinitrobenzenesulfenium ion,(NO&C6H3Sf, in the bright-red solutions of 2, 4-dinitrobenzenesulfenyl chloride in sulfuric acid, a it was found that these solutions were decolorized by the addition of benzene, and that phenyl 2, 4-dinitrophenyl sulfide could be isolated from the reaction mixtures. This suggested that reagents which would promote the ionic dissociation of the ...