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2,4 Dinitro 1 naphthol-7 sulfonic acid

CAS 846-70-8 EINECS/ELINCS 212-690-2 Synonyms Cl 10316 Cl acid yellow 1 Cl food yellow 1 5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid, disodium salt 2,4-Dinitro-1-naphthol-7-sulfonic acid disodium salt... [Pg.79]

Ext. D C Red No. 11. See Acid red 1 Ext. D C Red No. 15. See Ponceau 3R Ext. D C Yellow No. 1. See Acid yellow 36 Ext. D C Yellow No. 7 CAS 846-70-8 EINECS/ELINCS 212-690-2 Synonyms Acid yellow 1 Cl 10316 2,4-Dinitro-1-naphthol-7-sulfonic acid disodium salt 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic acid disodium salt Naphthol yellow S Classification Nitro color Empirical CioHsN2Na208S Formula C10H6N2O8S 2Na Properties M.w. 358.19 Toxicology TSCA listed Uses Colorant in external cosmetics, pharmaceuticals... [Pg.1792]

Flavionic Acid. Same as 2,4-Dinitro-l-naphthol-7-suIfonic Acid, which.will be described under Naphthol Sulfonic Acids... [Pg.484]

Dinitro-l-naphthol-7-sulfonic acid (naphthol yellow S)... [Pg.234]

Similar methods are used for preparing Martins yellow (2,4-dinitro-1-naphthol) and naphthol yellow S (l,2-dinitro-4-naphthol-7-sulfonic acid), as well as dinitrocresol and other polynitro compounds. If the concentration of the mixed acid is sufficiently high, the reaction succeeds with nearly the theoretical amount of nitric acid. [Pg.343]

Naphthol Yellow S (citronin A, flavianic acid sodium salt, 8-hydroxy-5,7-dinitro-2-naphthalene sulfonic acid disodium salt) [846-70-8] M 358.2, m dec on heating. Greenish yellow powder soluble in H2O. The free sulfonic acid can be recrystd from dil HCl (m 150°) or AcOH-EtOAc (m 148-149.5°). The disodium salt is then obtained by dissolving the acid in two equivalents of aqueous NaOH... [Pg.443]

Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulfonate. See Acid yellow 1 Cl 10316 Disodium 2,4-dinitro-7-sulfonato-1-naphtholate. See Acid yellow 1... [Pg.1528]

Methylsulfonyl)-2,6-dinitro-MAl- 2-Naphthol-6-sulfonic acid 6124 4-Nitrobenzyl alcohol 8063... [Pg.712]

See other pages where 2,4 Dinitro 1 naphthol-7 sulfonic acid is mentioned: [Pg.203]    [Pg.16]    [Pg.95]    [Pg.202]    [Pg.79]    [Pg.203]    [Pg.568]    [Pg.547]    [Pg.53]    [Pg.49]    [Pg.48]    [Pg.79]    [Pg.133]    [Pg.5]    [Pg.55]    [Pg.497]   
See also in sourсe #XX -- [ Pg.5 , Pg.12 ]



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2.4- Dinitro-i-naphthol-7-sulfonic acid

Naphthol sulfonic acid

Naphthols sulfonation

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