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Isatogen :: Isatogen (n.) A complex nitrogenous radical, C8H4NO2, regarded as the essential residue of a series of compounds, related to isatin, which easily pass by reduction to indigo blue..

Marsdenia :: Marsdenia (n.) A genus of plants of the Milkweed family, mostly woody climbers with fragrant flowers, several species of which furnish valuable fiber, and one species (Marsdenia tinctoria) affords indigo..

Anilic :: Anilic (a.) Pertaining to, or obtained from, anil; indigotic; -- applied to an acid formed by the action of nitric acid on indigo..

Pyrosulphuric :: Pyrosulphuric (a.) Pertaining to, or designating, an acid called also disulphuric acid) obtained by distillation of certain sulphates, as a colorless, thick, oily liquid, H2S2O7 resembling sulphuric acid. It is used in the solution of indigo, in the manufacture of alizarin, and in dehydration..

Indoin :: Indoin (n.) A substance resembling indigo blue, obtained artificially from certain isatogen compounds..

Lazulite :: Lazulite (n.) A mineral of a light indigo-blue color, occurring in small masses, or in monoclinic crystals; blue spar. It is a hydrous phosphate of alumina and magnesia..

Indigogen :: Indigogen (n.) See Indigo white, under Indigo..

Indican :: Indican (n.) An indigo-forming substance, found in urine, and other animal fluids, and convertible into red and blue indigo (urrhodin and uroglaucin). Chemically, it is indoxyl sulphate of potash, C8H6NSO4K, and is derived from the indol formed in the alimentary canal. Called also uroxanthin..

Bluing :: Bluing (n.) Something to give a bluish tint, as indigo, or preparations used by washerwomen..

Sulphine :: Sulphindigotic (a.) 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..

Indin :: Indin (n.) A dark red crystalline substance, isomeric with and resembling indigo blue, and obtained from isatide and dioxindol..

Phenicine :: Phenicine (n.) A purple powder precipitated when a sulphuric solution of indigo is diluted with water.

Indophenol :: Indophenol (n.) Any one of a series of artificial blue dyestuffs, resembling indigo in appearance, and obtained by the action of phenol on certain nitrogenous derivatives of quinone. Simple indophenol proper has not yet been isolated..

Woad :: Woad (n.) A blue dyestuff, or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing..

Synthesis :: Synthesis (n.) The art or process of making a compound by putting the ingredients together, as contrasted with analysis; thus, water is made by synthesis from hydrogen and oxygen; hence, specifically, the building up of complex compounds by special reactions, whereby their component radicals are so grouped that the resulting substances are identical in every respect with the natural articles when such occur; thus, artificial alcohol, urea, indigo blue, alizarin, etc., are made by synthesis..

Indolin :: Indolin (n.) A dark resinous substance, polymeric with indol, and obtained by the reduction of indigo white..

Skatol :: Skatol (n.) A constituent of human faeces formed in the small intestines as a product of the putrefaction of albuminous matter. It is also found in reduced indigo. Chemically it is methyl indol, C9H9N..

Chemistry :: Chemistry (n.) An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo..

Indigofera :: Indigofera (n.) A genus of leguminous plants having many species, mostly in tropical countries, several of them yielding indigo, esp. Indigofera tinctoria, and I. Anil..

Orpiment :: Orpiment (n.) Arsenic sesquisulphide, produced artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing..

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