Night Blue, 0,,I1,,ND (the hydrochloride of this is the commercial dye), made by heating pararosanilins with aniline and benzoic acid.
Pararosaniline (chloride), made by oxidizing a mixture of para-toluidine and aniline with arsenic acid, or nitrobenzene.
Phenylene Brown. See Aniline Brown above.
Ponecaux, or Bordeaux.—Various derivatives of azonaphthaleue. "Ponceau 3R," Catrit6N207 is made by combining diazo-cumene chlo ride with p-naphthol-disulphonic acid.
Primulin, ?), made by the action of sulphuric acid on thiotoluidine.
Rcsorein. Yellow, or Trop:eolin, 0, C„H„,NAS, made by the action of diazobenzene-sulphonic acid on resorcin.
Rhoda mine (hydrochloride), made by the action of phosphorus trichloride on fluorescein, and treatment of the product with diethylamine.
Roeeenin, made by the action of p-naphthnl on the diazo-compound of naph thionic acid.
Rosaniline.—See Fuchsin above.
Rose Bengale, 'made by the successive action of chlorine and iodine upon fluorescein.
Rosalie Acid, C20111603, closely allied to aurin; neither aurin nor rosolic acid is specially valu able.
Safranin, made by the oxidation of a mixture of tolnylene-diamine and aniline or tolnidine.
Troptrolin.—This name is applied to various compounds made by the successive action of nitrous acid and phenols upon amidobenzene sulphonie acids. See Resorcin Yellow above.
Uranin, the sodium salt of fluo rescein (which see above).
Victoria Green.—See Malachite Green above.
Victoria Orange.—See Aniline Orange above.
BinufounArny. Schultz, Die Ohmic des Stein koh ntheers (Brunswick, 1890) ; Villon, Traite pratique des matieres rolorantes artificielles (Paris, 18901 ; Cazoneuve, Repertoire onohitique des mat i'('rcs colorantes artifleielles (Lyons, 1893) ; Schultz and Julius. Systematic Sur rey of the Orga-nie Coloring Matters, trans lated by Green (New York, 1894) ; Mirst, Die tionary of the Coal-Tar Colors (London, 1896) ; Lefevre, Trait(' des matieres colorantcs organ igues artifieielles (2 vols., Paris, 1896) ; Seye wetz and Sisley, Chimie des colorantes a-rtificielles (Paris, 1897) ; Benedikt, Chemistry of the Coal-Tar Colors, translated by Knecht (London, 1900) ; Nietzki, Chemistry of the Organic Dyes( u ff s, translated by Collin :Ind Richardson (London, 1892; newer German edi tion, Berlin, 1901). A journal devoted to the progress of the coal-tar industry has, since 1877, been published in Berlin by Friedhinder, under the title, Fortsehritte der Thcerfarben Industrie tend rerwandter Industriezweige. The most important dyestuffs will be found described in some detail under their special names. See also DYEING; TEXTILE PRINTING.