(7E,9Z)-Dodeca-7,9-dien-l-y1 acetate Property

Boiling point:

309.6±21.0 °C(Predicted)

Density 

0.896±0.06 g/cm3(Predicted)

vapor pressure 

0.16 Pa (20 °C)

Flash point:

61 °C

storage temp. 

−20°C

solubility 

Chloroform (Slightly), Methanol (Slightly)

Water Solubility 

2.0 mg l^-1(20 °C, est.)

form 

Oil

color 

Colourless

Stability:

Light Sensitive

EPA Substance Registry System

7,9-Dodecadien-1-ol, acetate, (7Z,9E)- (55774-32-8)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

16-26-36

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

(7E,9Z)-Dodeca-7,9-dien-l-y1 acetate Chemical Properties,Usage,Production

Uses

The pheromone is used for trapping and control of the European grapevine moth (Lubesia butrana).

Metabolic pathway

Facile hydrolysis to the alcohol (2) would be expected in alkaline solution. No published information is available but generally compounds of this class are rapidly degraded biologically and their behaviour is similar to that of typical long chain alkenoic acids.

Degradation

The effect of heat, sunlight, radicals and oxidants on isomerisation of the double bonds has been investigated. The compound is degraded by heating at 50 °C (6 mg remained of 100 mg after 6 days) but the process may be slowed by the addition of antioxidants. Isomerisation occurs readily in sunlight in the presence of a photosensitiser. Within 100 minutes an equilibrium mixture containing 76% E,E and 12-14% of each of the E,Z- and Z,E-isomers was formed. In the absence of photosensitiser, degradation was faster than photoequilibration. Photo-oxidation in the presence of Rose Bengal as a singlet oxygen generator gave a furan derivative (4) (see Scheme 1). This takes place after isomerisation of 1 to the E,E-isomer (3) (Shani et al., 1981).