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Sulfophthalic acid

The most studied of the water-soluble metallophthalocyanines (Zn, Al, Ga) are the sulfonic acids. These are prepared by cyclotetramerization of 4-sulfophthalic acid or its derivatives (Figure 6),246,247 or by the direct sulfonation (oleum) of the metallophthalocyanine.248 The latter method gives complex mixtures, since direct sulfonation occurs at both exo and endo positions. These mixtures may be separated by chromatographic methods (usually reverse-phase HPLC). Thus... [Pg.982]

Mixed condensation of 4-sulfophthalic acid with other substituted phthalic acids (typically >200 °C, metal salt, urea, ammonium molybdate catalyst Figure 6) again gives mixtures.246-248 Routes which lead predominantly to monosulfonic acids of zinc(II) phthalocyanine and related compounds have been described.247,250... [Pg.983]

Lowering the reaction temperature or adding urea or basic solvents decreases the extent of chlorination. Solvents such as nitrobenzene, trichlorobenzene, alcohols, glycols, pyridine, and aliphatic hydrocarbons are employed. By using substituted phthalic acids such as 4-chlorophthalic acid anhydride, 4-sulfophthalic acid anhydride, or 4-nitrophthalimide, phthalocyanines with inner substitution can be produced. The products can often be purified by sublimation in vacuo at 300-400 °C. Soluble Pc s can be purified by recrystallization. [Pg.72]

A 45% yield of copper 3,4,5-trichlorophthalocyanine-4, 4",4m-sulfonic acid is made from 3.5g 4-sulfophthalic acid, 3.4g tetrachlorophthalic anhydride (molar ratio 1 1), 0.5g copper powder, 10 g urea, lmL titanium tetrachloride, and 0.5 g iodine, heated for 2 hr at 210°C. The yield is 3.1 g and the product is moderately water-soluble. [Pg.402]

Use Esters of 4-sulfophthalic acid used in wetting, cleansing, emulsifying, softening, and equahzing agents with textiles. Derivatives have application as surface-active agents. [Pg.1191]

Sulfophthalic acid 4-Sulfo-1,2- benzenedicarboxylic acid CsHjOjS 89-08-7 246.196 cry 139 ... [Pg.588]

Water-soluble Pc are obtained by direct sulfonation of the corresponding unsubstituted Pc with fuming sulfuric acid [9] or alternatively by the condensation of various ratios of 4-sulfophthalic acid and phthalic acid (or substituted phthalic acid, phthalonitrile, phthalamide, phthalic anhydride) [10]. In both cases, this yields a mixture of many isomeric differently sulfonated Pc, which require time... [Pg.107]

Synthesis of phthalocyanine-2,9,16,23-tetrasulfonic acid aluminum(III) complex 48 (R = -SO3 , M == Al(OH)) 10.73 g (40 mmol) 4-sulfophthalic acid monosodium salt, 1.28 g (24 mmol) ammonium chloride, 24.02 g (400 mmol) urea and 0.185 g (0.15 mmol) ammonium molybdate (all chemicals dried) were intensively mixed and placed in a 250 mL glass vessel under dry inert gas. 2 g (15 mmol) water-free aluminum trichloride (purity 99.99%) was added under inert gas. The mixture was heated at first at 140 °C and then within 30 min with stirring to 190 °C, followed by heating at 210 °C for 24 h under inert gas. The blue-colored reaction product was pulverized, treated for 24 h with 1 M aqueous... [Pg.221]

Pilot D-300 Cone.. See 4-Sulfophthalic acid Pilot SF4. See Calcium carbonate Pilot SXS-4a, Pilot SXS-96. See Sodium xylenesulfonate... [Pg.3375]

Sulfophthalic acid CAS 89-08-7 EINECS/ELINCS 201-881-6 Classification Aromatic sulfur-oxygen compd. Empirical CsHsOtS... [Pg.4263]

Fig. 2 Separation of 230 mg of a commercial mixture of two isomeric sulfophthalic acids by conventional HSCCC. a) HPLC analysis of the original mixture b) HSCCC elution profile of the separation and HPLC analyses of the separated components. Source From Preparative separation of isomeric sulfophthalic acids by conventional and pH-zone-refining counter-current chromatography, in J. Chromatogr. A. ... Fig. 2 Separation of 230 mg of a commercial mixture of two isomeric sulfophthalic acids by conventional HSCCC. a) HPLC analysis of the original mixture b) HSCCC elution profile of the separation and HPLC analyses of the separated components. Source From Preparative separation of isomeric sulfophthalic acids by conventional and pH-zone-refining counter-current chromatography, in J. Chromatogr. A. ...

See other pages where Sulfophthalic acid is mentioned: [Pg.945]    [Pg.742]    [Pg.988]    [Pg.989]    [Pg.990]    [Pg.902]    [Pg.151]    [Pg.945]    [Pg.75]    [Pg.1265]    [Pg.135]    [Pg.188]    [Pg.594]    [Pg.724]    [Pg.376]    [Pg.2766]    [Pg.4719]    [Pg.632]    [Pg.1370]    [Pg.1754]    [Pg.4813]    [Pg.6067]    [Pg.6712]    [Pg.7053]    [Pg.2267]    [Pg.207]    [Pg.211]    [Pg.634]    [Pg.957]   
See also in sourсe #XX -- [ Pg.211 ]




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