Yellow, Alizarin Salicyl

Alizarin yellow GG, salicyl yellow, sodium m-nitrobenzeneazosalicylate (indicator) dissolve 0.1 g in 100 mL 50% alcohol pH range yellow 10.0-12.0 lilac. 

Salt Corr ection op Thymolphthalein, Alizarine Yellow, and Salicyl Yellow in an Equimolecular Mixture op Sodium Carbonate AND Sodium Bicarbonate (Compared with Sodium Carbonate-Borate Buffer Solutions)... 

Alizarine yellow and salicyl yellow must be used with discretion because they show a very large salt error. It would be exceedingly desirable to have available better indicators for measuring the pH in the alkaline region (10-13). 

Rosolic acid, aurin, corallin, corallinphthalein, 4,4 -dihydroxy-fuchsone, 4,4 -dihydroxy-3-methyl-fuchsone (indicator) dissolve 0.5 g in 50 mL alcohol and dilute with water to 100 mL. Salicyl yellow (indicator) see alizarin yellow GG. 

These mordant-dyeing properties are found in a much higher degree in the bodies obtained by action of nitrodiazo-compounds on salicylic acid (Germ. Pat. 44170, 16 Nov., 1887). The dyestuff from metanitrodiazobenzene and salicylic acid comes into commerce as Alizarin Yellow G, and produces a fine yellow lake with chromium oxide. The pure dyestuff crystallizes from alcohol in light yellow needles. M.P. about 230°. Its constitution may be expressed by the formula —... 

A hydroxyl group is situated ortho to a carboxyl group which as a bidentate ligand is terminally metallized on the fiber when aftertreated with dichromate. An example is Alizarine Yellow GG [584-42-9] (50) (Cl Mordant Yellow 1 Cl 14025). Cr(III) has a coordination number of six, and therefore normally two dye molecules of the salicylic type are chelated to the metal ion. 

Nitrophenols and nitro-acids, (yellow to orange) salicyl-aldehyde (yellow) derivatives of alizarin JV-bromosucdn-imide phthaleins. 

Hydroxy-5-[ 3-nitrophenyl)azo]benzoic acid, 9CI. 5-[(m-Nitrophenyl)azo]salicylic acid. Salicylic yellow. Metachrome yellow. C.L Mordant yellow 1. C.L 14025. Alizarin 2G. Chrome yellow G. Poloxal yellow GL. Numerous other proprietary names [6283-26-7]... 

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