Sudan III
CAS No. : 85-86-9
(Synonyms: Sudan Red III; Tetrazobenzene-β-naphthol; 111440 Red)
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| Cat. No. : | HY-D0931 |
| M.Wt: | 352.40 |
| Formula: | C22H16N4O |
| Purity: | >98 % |
| Solubility: | DMSO : 2.27 mg/mL (ultrasonic;warming;heat to 60°C) |
Sudan III is a hydrophobic bisazo dye[1]. In Vitro: Sudan III changes its color from orange to blue against a small volume of sulfuric acid, and the acetonitrile solution of Sudan III is the most suitable for observing the color-change phenomenon. H-NMR and UV-Vis spectroscopic studies show that the color-change mechanism of Sudan III against sulfuric acid is due to the protonation of the dye by sulfuric acid[1].
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