Chemistry:Solvent Yellow 7
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Short description: Chemical compound
phenol_structure.svg)
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| Names | |
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| Preferred IUPAC name
4-(Phenyldiazenyl)phenol | |
| Other names
4-Hydroxyazobenzene
Solvent Yellow 7 Simpsol Yellow | |
| Identifiers | |
3D model (JSmol)
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PubChem CID
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| Properties | |
| C12H10N2O | |
| Molar mass | 198.225 g·mol−1 |
| Appearance | An orange solid[2] |
| Melting point | 155 °C (311 °F; 428 K) |
| Slightly soluble in hot water | |
| Solubility in other solvents | Soluble in ethanol, acetone |
| Acidity (pKa) | 8.2 (from the hydroxyl group) |
| Hazards | |
| Main hazards | Irratant |
| Related compounds | |
Related compounds
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Benzenediazonium chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Tracking categories (test):
Solvent Yellow 7 is a common azo dye with a formula of C6H5N2C6H4OH.
Synthesis
Like most azobenzenes, Solvent Yellow 7 can be synthesized by the reaction of phenyldiazonium salt with phenol. The optimal pH value for this azo coupling is 8.5-10. The reaction is carried out in water, since sodium chloride (or potassium chloride) formed in the reaction is soluble in water, while the product precipitates.[3]
References
- ↑ "4-PHENYLAZOPHENOL". https://www.chemicalbook.com/ChemicalProductProperty_EN_CB5366310.htm.
- ↑ Solomons, T.W Graham (2017). Organic chemistry (10 ed.). John Wiley and sons. pp. 941. ISBN 978-1119248972. OCLC 973372285.
- ↑ Estibaliz, Merino. "Synthesis of azobenzenes: the coloured pieces of molecular materials". http://www.chtf.stuba.sk/~szolcsanyi/education/files/Organicka%20chemia%20II/Prednaska%202_Aminy_Reakcie/Doplnkove%20studijne%20materialy/Azobenzenes/Synthesis%20of%20azobenzenes%20-%20the%20coloured%20pieces%20of%20molecular%20materials.pdf.
See also
- Benzenediazonium chloride
- Azo compound
- Solvent Yellow 1
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