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6-hydroxy-2-naphthalenesulfonic acid

By the nitrosation of 2-naphthalenol and the reaction of the nitroso compound with sodium bisulfite. By nitrosation/reduction of 6-hydroxy-2-naphthalenesulfonic acid. [Pg.502]

A strong anion-exchange column and a gradient of 0-100% of B (10 mM aqueous Na2B407 in 0.5 M NaC104.H20) in A (10 mM Na2B407) was used by Marmion (208,209) for the separation of sunset yellow from 4,4 -(diazoamino)-dibenzenesulfonic acid (DAADBSA). This same system was used by Singh (210) for the separation of sunset yellow from the intermediates sulfanilic acid, 6-hydroxy-2-naphthalenesulfonic acid, and DONS. Useful information on the identification and confirmation of products related to sunset yellow are described by Bailey and Calvey (211). [Pg.559]

Sodium 6-Hydroxy-2-naphthalenesulfonic Acid Not more than 0.3%. [Pg.20]

Aminobenzenesulfonic acid <0.2% as the sodium salt 6-Hydroxy-2-naphthalenesulfonic acid <0.3% as the sodium salt... [Pg.198]

FD C Red No. 40 This monoazo dye (5) is manufactured by coupling diazotized 5-amino-4-methoxy-2-toluenesulfonic with 6-hydroxy-2-naphthalenesulfonic acid. FD C Red No. 40 is also known as Allura Red or Cl Food Red 17. Its chemical identity is principally the disodium salt of 6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfophenyl) azo]-2-naphthalenesulfonic acid, which has the formula CigHi4N20gS2Na2, and mol wt 496.43. [Pg.521]

Dihydro-5-thioxo-1,3,4-thiadiazol-2-yl) azo]-6-hydroxy-2-naphthalenesulfonic acid, D-00495... [Pg.1099]

Bromophenyl)azo]-6-hydroxy-2-naphthalenesulfonic acid, B-00547 1 -(4-Bromophenyl)-1,3-butanedione 3-Oxime, in B-00548 2-[(5-Bromo-2-pyridinyl)azo]-5-(diethylamino)phenol, in A-00126... [Pg.1268]

A, A -Diethyl-4-(2-thiazolylazo) benzenamine, in T-00138 5-[(4,5-Dihydro-5-thioxo-1,3,4-thiadiazol-2-yl)azo]-6-hydroxy-2-naphthalenesulfonic acid Na salt, in D-00495... [Pg.1303]


See other pages where 6-hydroxy-2-naphthalenesulfonic acid is mentioned: [Pg.43]    [Pg.1051]    [Pg.98]    [Pg.234]    [Pg.249]    [Pg.74]    [Pg.67]    [Pg.238]    [Pg.581]    [Pg.972]    [Pg.1004]    [Pg.1027]    [Pg.1092]    [Pg.1119]    [Pg.1120]    [Pg.1121]    [Pg.1181]    [Pg.1216]    [Pg.1217]    [Pg.1217]    [Pg.1293]    [Pg.1304]    [Pg.1306]    [Pg.1341]    [Pg.1346]    [Pg.1350]    [Pg.1357]   
See also in sourсe #XX -- [ Pg.559 ]




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6- Amino-4-hydroxy-2-naphthalenesulfonic acid

Naphthalenesulfonic 2-hydroxy

Naphthalenesulfonic acid

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