| Product Name | Annatto |
| CAS No. | 1393-63-1 |
| Synonyms | C.I. Natural Orange 4; (2E,4Z,6E,8E,10E,12E,14E,16E,18E)-4,8,13,17-tetramethylicosa-2,4,6,8,10,12,14,16,18-nonaenedioic acid |
| InChI | InChI=1/C24H28O4/c1-19(11-7-13-21(3)15-17-23(25)26)9-5-6-10-20(2)12-8-14-22(4)16-18-24(27)28/h5-18H,1-4H3,(H,25,26)(H,27,28)/b6-5+,11-7+,12-8+,17-15+,18-16+,19-9+,20-10+,21-13-,22-14+ |
| Molecular Formula | C24H28O4 |
| Molecular Weight | 380.4767 |
| Density | 1.069g/cm3 |
| Boiling point | 640.4°C at 760 mmHg |
| Flash point | 355.1°C |
| Refractive index | 1.567 |
1393-63-1 annatto
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