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| | FEMA 3148 Basic information |
| | FEMA 3148 Chemical Properties |
| Melting point | -60 °C | | Boiling point | 70-72 °C0.05 mm Hg(lit.) | | density | 0.905 g/mL at 25 °C(lit.) | | vapor pressure | 1.6hPa at 21.1℃ | | FEMA | 3148 | ETHYL TRANS-2,CIS-4-DECADIENOATE | | refractive index | n20/D 1.486(lit.) | | Fp | >230 °F | | storage temp. | 2-8°C | | solubility | Chloroform (Slightly), Methanol (Slightly) | | form | neat | | color | Colourless | | Odor | at 10.00 % in dipropylene glycol. green waxy pear apple sweet fruity tropical | | Odor Type | green | | JECFA Number | 1192 | | BRN | 1724176 | | LogP | 4.1-4.7 at 35℃ and pH7 | | EPA Substance Registry System | 2,4-Decadienoic acid, ethyl ester, (2E,4Z)- (3025-30-7) |
| Hazard Codes | Xi,N | | Risk Statements | 38-50/53 | | Safety Statements | 24/25-61-60 | | RIDADR | UN 3082 9/PG 3 | | WGK Germany | 1 | | RTECS | HD3510900 | | F | 10-23 | | HS Code | 29161995 | | Toxicity | LD50 oral in rat: > 5gm/kg |
| | FEMA 3148 Usage And Synthesis |
| Chemical Properties | Ethyl-trans-2, cis-4-decadienoate has a characteristic pear-like flavor and a light fruity aroma.
| | Chemical Properties | Ethyl (2E,4Z)-2,4-Decadienoate has been identified in pears and has the
typical aroma of Williams pears. Synthesis of ethyl (2E,4Z)-2,4-decadienoate
starts from (Z)-1-heptenyl bromide, which is converted into a 1-heptenyllithium
cuprate complex with lithium and copper iodide. Reaction with ethyl propiolate
yields a mixture of 95% ethyl (2E,4Z)- and 5% ethyl (2E,4E)-2,4-decadienoate.
Pure ethyl (2E,4Z)-2,4-decadienoate is obtained by fractional distillation. A
biotechnological process for its preparation has been developed. | | Chemical Properties | clear colorless to yellowish liquid | | Occurrence | Reported found in Bartlett pears, apple, grape, durian (Durio zibethinus), pear brandy, quince and spineless
monkey orange (Strychnos madagasc). | | Uses | Potential applications include the profile enhancement of guava, melon, pear, apple, banana, kiwi, grape, golden delicious apple, fruit cocktail juices, fruit nectar, mamey and other tropical backgrounds. | | Definition | ChEBI: Ethyl (2E,4Z)-deca-2,4-dienoate is a fatty acid ethyl ester resulting from the formal condensation of the carboxy group of (2E,4E)-deca-2,4-dienoic acid with the hydroxy group of ethanol. It has a role as a plant metabolite, a flavouring agent, a fragrance and a kairomone. It is functionally related to a (2E,4E)-deca-2,4-dienoic acid. | | Aroma threshold values | Detection: 100 ppb. Aroma characteristics at 1.0%: sweet ripe pear, creamy and slightly fatty with fruity,
green, waxy apple, fleshy nuances | | Taste threshold values | Taste characteristics at 5 ppm: ripe pear, green fruity, waxy apple, tropical notes, fatty golden delicious apple
fleshy. Taste characteristics at 20 ppm: green, fruity, apple and pear with waxy tropical nuances. | | Synthesis Reference(s) | Tetrahedron, 36, p. 1961, 1980 DOI: 10.1016/0040-4020(80)80209-2 | | General Description | Natural occurrence: Apple, pear, grape, pear brandy and quince. | | Biochem/physiol Actions | Odor at 1.0% | | Synthesis | Synthetically via the lithium vinyl cuprates. |
| | FEMA 3148 Preparation Products And Raw materials |
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