a-Farnesene

  • 1,3,6,10-Dodecatetraene, 3,7,11-trimethyl-, (3E,6E)-
  • trans-2,6,10-Trimethyl-2,6,9,11-dodecatetraene
  • trans-3,7,11-Trimethyl-1,3,6,10-dodecatetraene
Formula
C15H24
Structure
Description
Colorless to light yellow liquid. Taste at 10-20 ppm.

Registry Numbers and Inventories.
CAS
502-61-4
EC (EINECS/ELINCS)
207-948-6
Merck
12,3976
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C15H24
Formula mass
204.36
Melting point, °C
< 25
Boiling point, °C
260
Vapor pressure, mmHg
0.0067 (25 C)
Vapor density (air=1)
> 1 g/L
Odor Threshold Odor threshold 1%
Density
0.8706 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.5178 (20 C)
Partition coefficient, pKow
6.73
Heat of vaporization
49.75 kJ/mol

Hazards and Protection.
Storage
Keep in tightly closed container.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Respiratory protection is not required. Where protection is desired, use multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges.
Small spills/leaks
Absorb on sand or vermiculite and place in closed containers for disposal. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
110
Fire fighting
Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Emits toxic fumes under fire conditions.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
May be harmful if ingested.
   Inhalation
Material may be irritating to mucous membranes and upper respiratory tract. May be harmful if inhaled.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
May cause irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.