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Schaeffer’s salt

Sodium salt of 6-hydroxy-2-naphthalenesulfonic acid (Schaeffer s salt)—not more than 0.3%... [Pg.442]

Schaeffer s salt orgchem HOC oS03Na A light-yellow to pink, water-soluble powder the sodium salt formed from 2-naphthol-6-sulfonic acid used as an intermediate in synthesis of organic compounds. sha-forz, s6lt ... [Pg.334]

Schaeffer s salt [COLORANTS FOR FOOD, DRUGS, COSMETICS AND MEDICALDEVICES] (Vol 6)... [Pg.872]

Bailey et al. (199) and Singh (200) used ion-exchange HPLC for the separation of amaranth from the intermediates naphthionic acid and R-salt, as well as the side reaction products 2-naph-thol-6-sulfonic acid sodium salt (Schaeffer s salt), 2-naphthol-6,8-disulfonic acid disodium salt (G-salt), and 2-naphthol-3,6,8-trisulfonic acid trisodium salt (NTSA). [Pg.558]

Yamada et al. (201) developed a method for the determination of starting materials (7-hydroxy-1,3,6-naphthalenesulfonic acid, G-salt, R-salt, Schaeffer s salt, and naphthionic salt) and subsidiary colors (Ponceau 6R, amaranth, and fast red) in Ponceau 4R. It consisted of an ODS column and gradient elution of acetonitrile in 0.02 M ammonium acetate. [Pg.558]

Sunset yellow was separated from its subsidiary dye l-p-sulfophenylazo-2-naphthol-3,6-disulfonic acid trisodium salt (195) and from its intermediates sulfanilic acid and Schaeffer s salt (194) by means of ion-pair HPLC. Ion-pair chromatography has also been used to determine free and bound nonsulfonated aromatic amines in sunset yellow after reduction with dithionite, diazotization with sodium nitrite, and coupling with R-salt (202). [Pg.559]

E. A. Cox, High performance liquid chromatographic determination of sulfanilic acid, Schaeffer s salt, 4, 4 -(diazoamino)-diben-zenesulfonic acid and 6,6 -oxybis (2-naphthalenesulfonic acid) in FD C yellow No. 6 Collaborative study, J. Assoc. Off. Anal. Chem., 63 61 (1980). [Pg.246]

Order of Elution (1) Cresidinesulfonic acid (CSA) (2) unknown (3) Schaeffer s salt (SS) (4) unknown (5) 4,4 -diazoaminobis(5-methoxy-2-methylbenzenesulfonic acid) (DMMA) (6) unknown (7) Allura Red (8) 6,6 -oxybis(2-naphthalenesulfonic acid) (DONS). [Pg.884]

Incompatibilities poorly compatible with citric acid, saccharose solutions, and saturated sodium bicarbonate solutions. Incompatible with ascorbic acid, gelatin, and glucose. Method of manufacture diazotized sulfanilic acid is coupled with Schaeffer s salt (sodium salt of (3-naphthol-6-sulfonic acid). [Pg.198]

Schaeffer s salt. (sodium salt of 2-naphthol-6-sulfonic acid). C10H6OHSO3Na. [Pg.1109]

Sodium salt, Cl(>H7Na04SP Schaeffer s salt Light yellow to pink powder. Freely sol in water . slightly sol in alcohol. [Pg.1011]

Salicylic acid, 11, 42 14, 48, 52 Schaeffer s acid, 16, 16 Schaeffer s salt, 16, 13 Schotten-Baumann acylation, 12, 41 ... [Pg.56]

The procedure that proved successful proceeded from the tricyclic compound XV, prepared from 6-methoxyl-l-methyl-2-tetralone, which was obtained from Schaeffer s salt by well-known procedures. The intermediate XVI was transformed into XVII by a Birch reduction follow ed by acetylation and mild acid hydrolysis. The, y-unsaturated... [Pg.291]

See other pages where Schaeffer’s salt is mentioned: [Pg.872]    [Pg.102]    [Pg.559]    [Pg.52]    [Pg.63]    [Pg.15]    [Pg.74]    [Pg.15]    [Pg.45]    [Pg.229]    [Pg.88]    [Pg.93]    [Pg.45]    [Pg.241]   
See also in sourсe #XX -- [ Pg.15 , Pg.16 ]

See also in sourсe #XX -- [ Pg.558 ]

See also in sourсe #XX -- [ Pg.15 , Pg.16 ]

See also in sourсe #XX -- [ Pg.15 , Pg.16 ]

See also in sourсe #XX -- [ Pg.13 , Pg.16 ]

See also in sourсe #XX -- [ Pg.15 , Pg.16 ]

See also in sourсe #XX -- [ Pg.15 , Pg.16 ]



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