Sulph*in`di*got"ic (?), a.
(Chem.) Of, pertaining to, or designating, a sulphonic
acid obtained, as a blue solution, by dissolving indigo in sulphuric
acid; -- formerly called also cerulic sulphuric acid, but
properly called indigo-disulphonic acid.
Sulph*in`di*got"ic (?), a.
(Chem.) Of, pertaining to, or designating, a sulphonic
acid obtained, as a blue solution, by dissolving indigo in sulphuric
acid; -- formerly called also cerulic sulphuric acid, but
properly called indigo-disulphonic acid.