13-naphthalene disulfonic acid, 7-Hydroxy sodium salt

SYNS A.F. RED No. 1 CERVEN KUMIDINOVA C.1.16155 C.I. FOOD RED 6 C.I. FOOD RED 6, DISODIUxM SALT DISODIUM-3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,7-NAPHTHALENE-DISULFONATE DISODIUM-3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,7-NAPHTHALENE-DISULFONIC ACID DISODIUM-3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,7-NAPHTHALENE-DISULPHONATE DISODIUM-3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,7-NAPHTHALENE-DISULPHONIC ACID DOLKWAL PONCEAU 3R EXT. D C RED No. 15 3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2,7-NAPHTHALENE-DISULFONIC ACID, DISODIUM SALT 3-HYDROXY-4-((2,4,5-TRIMETHYLPHENYL)AZO)-2.7-NAPHTHAL-ENEDISULPHONIC ACID, DISODIUM SALT MAPLE PONCEAU 3R PONCEAU 3R SODIUM CUMENE-AZO-P-NAPHTHOLDISULPHONATE USACERTRED No. 1... 

Amanil blue 2BX[3,3 -((4,4 -biphenylylene) bis(azo)bis(5-amino-4-hydroxy-2,7-naphthalene disulfonic acid tetrasodium salt, sodium diphenyl-4,4 bis-azo-2, 8 -amino-l -naphthol-3, 6 -disulfonate, benzanil blue 2B, paramine blue 2B, Cl 22610] [2602-46-2] Amanil sky blue [3,3 -((3,3 -dimethoxy-4,4 -biphenylene)bis(azo))bis(5-amino-4-hydroxy)-2,7-naphthalenedisulfonic acid tetrasodium salt benzanil sky blue direct blue 5 Cl 24400] [2429-74-5]... 

In our laboratory, this method was appUed to the purification of food mono-azo dyes. Amaranth, New Coccine, and Sunset Yellow FCF were purified at 99.7%, 99.5%, and 99.3%, respectively, from 1-23 g of commercial dyes. Continued research has led to the purification of impurities present in commercial Sunset Yellow FCF that include RS-SA (trisodium salt of 3-hydroxy-4-[sulfophenyl] azo-2,7-naphthalene disulfonic acid), GS-S A (1 -[4-sulfophenyl]azo)-2-naphthol-6,8-disulfonic acid), DONS (disodium salt of 6,6 -oxybis-2-naphthalene sulfonic acid), and 2N-SA (sodium salt of 4-[(2-hydroxy-l-naphthalenyl)azo]benzenesulfonic add). The method successfully isolated GS-SA from Sunset Yellow FCF. " ... 

CAS 5413-75-2 EINECS/ELINCS 226-502-1 Synonyms Acid red 73, disodium salt Cl 27290 7-Hydroxy-8-[[4-(phenylazo) phenyl] azo]-1,3-naphthalenedisulfonic acid, disodium salt 7-Hydroxy-8-(4-phenylazophenylazo) naphthalene-1,3-disulfonic acid, sodium salt 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-(phenylazo) phenyl) azo)-, disodium salt Classification Azobenzene diazo color Empirical C22HieN4Na207S2 Properties M.w. 558.48 Uses Dye for wool, silk, polyamide, resins, stains, and soaps colorant in hair dyes Manuf/Distrib. ABCR http //www.abcr.de] Aldrich http //www.sigma-aldrich.com] Anar Infl. http //www.anarchem.com] Dudley http //www.dudiey-chem.com] Fluka http //www.sigma-aldrich.com Acid red 87... 

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