Benzyltributylammonium 7-hydroxynaphthalene-1-sulfonate

The title compound, C19H34N+･C10H7O4S-, is a charge-control agent used for toners in electrophotography. The anions form one-dimensional chains by O—H･･･O hydrogen bonds in a zigzag fashion along the c axis between the OH group of one anion and the sulfonate O atom of a neighboring anion. One of the n-butyl chains of the cation is disordered over two sites in a 0.77:0.23 ratio