Solvent yellow 14 dye

Solvent green 3 Solvent orange 2 Solvent yellow 14 dye, fibers Basic orange 2 dye, fibers textiles Direct blue 15 dye, floor polishes Solvent yellow 14 dye, fluorescent cytochemistry Basic orange 14... 

Amino-2-nitrophenol dye, gasoline Solvent yellow 14 dye, hair... 

Phenyidiethanolamine m-Phenylenediamine sulfate p-Phenylenediamine sulfate N-Phenyl-p-phenylenediamine N-Phenyl-p-phenylenediamine sulfate Pigment yellow 73 Resorcinol Thymol dye, heating oil Solvent red 23 dye, hog s hair Direct black 38 dye, hydrocarbon solvents Solvent yellow 14 dye, inks... 

Solvent green 3 Solvent orange 2 Solvent yellow 14 dye, paper... 

Cyclopentanone, 2,5-bis [[4-(diethylamino) phenyl] methylene]-, (2E.5E)- 3-[(1-Ethyl-1,2,3,4-tetrahydro-6-quinolinyl) methylene]-2,3-dihydro-4H-1-benzopyran-4-one dye, shoe creams Acid blue 15 Acid orange 24 dye, shoe polishes Solvent yellow 14 dye, silk... 

Acid red 73 Acid red 88 Acid violet 7 Acid violet 17 4-Dimethylaminobenzene Solvent yellow 14 dye, solvent Basic red 2... 

Azo Dyes. The Colourindex classifications of dyes depend more on their historical eady use than on their stmctures, eg. Oil Orange is named Solvent Yellow 14, and a yellow for synthetic fibers is Disperse Yellow 23. 

In general, the azo colors are useful for coloring polystyrene, phenoHcs, and rigid poly(vinyl chloride). Many are compatible with poly(methyl methacrylate), but in this case the weatherabiUty of the resin far exceeds the life of the dyes. Among the more widely used azo dyes (qv) are Solvent Yellows 14 and 72 Orange 7 and Reds 1, 24, and 26. 

Fig. 3.59. HPLC-UV chromatogram at 230 nm for the analysis of azo dyes, (a) Disperse red 1 (b) Solvent yellow 14 (c) Solvent red 24. Reprinted with permission from M. C. Garrigos el al. [129].

For example, the dye. Solvent Yellow 14 has a sublimation temperature of about 125 °C whereas its melting point is 134 °C. The reaction temperature of the chlorate-lactose composition is in excess of 500 °C, which often results in chemical reactions bringing about the destruction of a large proportion of the dye. For example, strong reduction brings about cleavage as shown in Scheme 10.2, whereas pyrolysis leads to decomposition as in Scheme 10.3 Hence, a typical orange smoke composition contains up to 50% of dyestuff in order to offset losses due to the above reactions. 

Solvent dyes are really intermediate between dyes and pigments being insoluble in water but soluble in solvents, especially hydrocarbons. Structurally many solvent dyes bear a close similarity and relationship with disperse dyes. The Colour Index has an issne on Solvent Dyes, where several hundred dyes are described, unfortunately many of the strnctnres remain confldential. The structures of the disclosed dyes range from very simple monoazo dyes, e.g. Cl Solvent Yellow 14 (2.78) to the higher performing anthraquinones, e.g. Cl Solvent Yellow 163 (2.79) and Blue 36 (2.80), quinophthalones... 

Red Dyes with Yellow/Orange/Red Fluorescence. The best known dyes of this type are the rhodamines (xanthenes), such as C.I. Solvent Red 49 [509-34-2] (4). Another type are hemicyanines, e.g. C.I. Basic Red 12, 48070 [6320-14-5] (Astraphloxine). 

AI3-16321 o-Aminoohlorobenzene Aniline, o-chloro- Benzenamine, 2-chloro- CCRIS 2880 o-Chloraniline 0-Chloroamlnobenzene o-Chloroaniline EINECS 202-426-4 Fast Yellow GC Base HSDB 2045 NSC 6183. Dye intermediate, standards for colorimetric apparatus, manufacture of petroleum solvents and fungicides, mp = -14° bp = 208.8°. bpii = 95-97° d = 1.213 insoluble in H2O, soluble in Eto, MezCO, freely soluble in EtOH. I. DuPont de Nemours Inc. 

In the case of solvatochromism a shift in the equilibrium between two types of molecules can occur (for example, keto enol equilibrium, associated nonassociated form, or the stabilization of polarized or the unpolarized form of the dye can take place under the influence of the polarity of the solvent. For example, the behavior of 4-phenylazo-l-naphthol (I) (12, 14) represents a clear example of the shift in the tautomeric equilibrium under the influence of the solvent. When dissolved in pyridine this compound gives a yellow solution and contains exclusively azonaphthol form (la). 

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