Chrysoine resorcinol
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| Chrysoine resorcinol | |
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| IUPAC name | Sodium 4-[(2,4-dihydroxyphenyl)diazenyl]benzenesulfonate |
| Other names | Chrysoine, Resorcinol Yellow, Gold Yellow, C.I. Food Yellow 8, C.I. Acid Orange 6, C.I. 14270, Yellow T, Tropaeolin O, Tropaeolin R, Sodium p-(2,4-dihydroxyphenylazo)benzenesulfonate |
| Identifiers | |
| CAS number | [547-57-9] |
| PubChem | |
| EINECS number | |
| Properties | |
| Molecular formula | C12H9N2NaO5S |
| Molar mass | 316.27 g/mol |
| Appearance | Orange-yellow |
| Solubility in water | Partially soluble |
| Hazards | |
| NFPA 704 |
 1
2
0
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| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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| Chrysoine resorcinol (pH indicator) | ||
| below pH 11.0 | above pH 12.7 | |
| 11.0 | ↔ | 12.7 |
Chrysoine resorcinol (Resorcinol Yellow, C.I. 14270, Tropaeolin O) is a colourant which is used as a food additive. It has absorption maximum of 387 nm.
It is produced from plant alkanet (Alkanna tinctoria).
In Europe, it was assigned to the E number E103 until it was banned in 1984. In US, it was banned in 1988.
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