indigo-disulphonic acid

indigo-disulphonic acid
Sulphindigotic 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}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • cerulic sulphuric — Sulphindigotic 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… …   The Collaborative International Dictionary of English

  • Sulphindigotic — 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} …   The Collaborative International Dictionary of English

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