| Bioactivity | Sudan III is a hydrophobic bisazo dye[1]. | ||||||||||||
| Invitro | 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]. | ||||||||||||
| Name | Sudan III | ||||||||||||
| CAS | 85-86-9 | ||||||||||||
| Formula | C22H16N4O | ||||||||||||
| Molar Mass | 352.39 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Sakurai T, et al. Color Change of Sudan III against Concentrated Sulfuric Acid in Acetonitrile and Quantification for a Small Amount of Concentrated Sulfuric Acid. Anal Sci. 2016;32(2):129-33. |