The Collaborative International Dictionary
C10H5OHNH2SO3Na
Eikonogen \Ei*kon"o*gen\, n. [Gr. e'ikw`n, e'iko`nos, image + root of gi`gnesqai to be born.] (Photog. & Chem.) The sodium salt of a sulphonic acid of a naphthol, C10H5(OH)(NH2)SO3Na used as a developer.