(E)-beta-Farnesene
Synonym(s):trans-7,11-Dimethyl-3-methylene-1,6,10-dodecatriene
- CAS NO.：18794-84-8
- Empirical Formula: C15H24
- Molecular Weight: 204.35
- MDL number: MFCD00065433
- EINECS: 242-582-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:51:23
What is (E)-beta-Farnesene?
Description
trans-β-Farnesene, also known as (E)-β-farnesene, is a member of a group of sesquiterpene isomers, three of which occur in natural oils. The natural trans-β compound is used by aphids as a death signal to warn away other individuals and by potatoes to repel insects. A California company is?using synthetic mixed farnesenes as a starting material?for products ranging from biodiesel to perfumes.
Chemical properties
water ≤0.04% colorless to faint-yellow
The Uses of (E)-beta-Farnesene
trans-β-Farnesene is a sesquiterpene natural product made my different plants to repel pest aphid species.
Definition
ChEBI: A beta-farnesene in which the double bond at position 6-7 has E configuration. It is the major or sole alarm pheromone in most species of aphid.
Synthesis Reference(s)
The Journal of Organic Chemistry, 48, p. 5183, 1983 DOI: 10.1021/jo00174a007
Tetrahedron Letters, 25, p. 5193, 1984 DOI: 10.1016/S0040-4039(01)81561-6
Properties of (E)-beta-Farnesene
| Melting point: | <25℃ |
| Boiling point: | 272.5±20.0℃ (760 Torr) |
| Density | 0.807±0.06 g/cm3 (20 ºC 760 Torr) |
| vapor pressure | 34Pa at 25℃ |
| refractive index | 1.487 (589.3 nm 18℃) |
| FEMA | 3839 | ALPHA-FARNESENE |
| Flash point: | 110 °C |
| storage temp. | −20°C |
| solubility | Chloroform (Slightly), Dichloromethane (Slightly) |
| form | neat |
| form | Liquid |
| color | Colourless |
| Odor | at 100.00 %. woody citrus herbal sweet |
| Water Solubility | 100μg/L at 20℃ |
| JECFA Number | 1343 |
| EPA Substance Registry System | (E)-.beta.-Farnesene (18794-84-8) |
Safety information for (E)-beta-Farnesene
| Signal word | Danger |
| Pictogram(s) |
 Health Hazard GHS08 |
| GHS Hazard Statements |
H304:Aspiration hazard |
Computed Descriptors for (E)-beta-Farnesene
| InChIKey | JSNRRGGBADWTMC-NTCAYCPXSA-N |
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