Bixin
| Names | |
|---|---|
| IUPAC name (2E,4E,6E,8E,10E,12E,14E,16Z,18E)-20-Methoxy-4,8,13,17-tetramethyl-20-oxoicosa-2,4,6,8,10,12,14,16,18-nonaenoic acid | |
| Other names cis-Bixin; α-Bixin; 9-cis-6,6'-Diapo-ψ,ψ-carotenedioic acid, 6-methyl ester | |
| Identifiers | |
| 
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| 3D model (JSmol) | |
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.027.499 | 
| PubChem CID | |
| UNII | 
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| CompTox Dashboard (EPA) | |
| 
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| 
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| Properties | |
| C25H30O4 | |
| Molar mass | 394.511 g·mol−1 | 
| Appearance | Orange crystals | 
| Melting point | 198 °C (cis-isomer) 217 °C (trans-isomer) | 
| Insoluble | |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references | |
Bixin is an apocarotenoid found in the seeds of the achiote tree (Bixa orellana) from which it derives its name. It is commonly extracted from the seeds to form annatto, a natural food coloring, containing about 5% pigments, of which 70–80% are bixin.