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| (E,E)-2,4-Hexadienal Basic information |
| Product Name: | (E,E)-2,4-Hexadienal | | Synonyms: | (2E,4E)-2,4-Hexadienal;(2E,4E)-Hexadienal;(E)-2,(E)-4-hexadienal;(E,E)-2,4-hexadienal;(e,e)-4-hexadienal;TRANS-2,4-HEXADIENAL;Sorbaldehyde, Sorbic aldehyde;trans-2,trans-4-Hexadienal,95%,sum of isomers | | CAS: | 142-83-6 | | MF: | C6H8O | | MW: | 96.13 | | EINECS: | 205-564-3 | | Product Categories: | aldehyde Flavor | | Mol File: | 142-83-6.mol |
| (E,E)-2,4-Hexadienal Chemical Properties |
| Melting point | -16.5°C | | Boiling point | 69 °C/20 mmHg (lit.) | | density | 0.895 g/mL at 20 °C
0.871 g/mL at 25 °C (lit.) | | vapor density | >1 (vs air) | | refractive index | n20/D 1.541(lit.) | | FEMA | 3429 | TRANS,TRANS-2,4-HEXADIENAL | | Fp | 154 °F | | storage temp. | 2-8°C | | Specific Gravity | 0.871 | | Water Solubility | It is Insoluble in water, but soluble in ethanol. | | Sensitive | Air Sensitive | | JECFA Number | 1175 | | BRN | 1698401 | | Stability: | Stable. Combustible. Incompatible with strong reducing agents, strong bases, strong oxidizing agents. | | CAS DataBase Reference | 142-83-6(CAS DataBase Reference) | | IARC | 2B (Vol. 101) 2013 | | NIST Chemistry Reference | 2,4-Hexadienal, (E,E)-(142-83-6) | | EPA Substance Registry System | 2,4-Hexadienal, (2E,4E)- (142-83-6) |
| (E,E)-2,4-Hexadienal Usage And Synthesis |
| Description | trans, frans-2,4-Hexadienal has a fresh, green, floral citrus odor.
May be synthesized by slowly heating croton-aldehyde with acetaldehyde
in the presence of pyridine at 85 - 90°C. | | Chemical Properties | trans, trans-2,4-Hexadienal has a sweet, green aroma; in dilution, a pleasant citrusy green. | | Chemical Properties | liquid | | Occurrence | Reported found in olive, roasted peanuts, tomato, caviar, fish, auto-oxidized salmon oil, tea, apricot, strawberry, wheaten bread, Russian cheeses, cooked chicken and beef, boiled mutton, hop oil, raw and roasted peanuts, soybean, olive,
rice, buckwheat, malt, kiwifruit and scallops. | | Uses | 2,4-Hexadienal, is used in the synthesis of chiral cycloadducts. 2,4-Hexadienal is used as a flavouring agent, as a chemical intermediate in various organic synthetic reactions and as a raw material in the manufacture of sorbic acid. It is also used as in the manufacture of polymethine dyes, as a pharmaceutical intermediate in the manufacture of mitomycins and antihypercholesteraemics, as an inhibitor of corrosion for steel used in oil field operations, as a monomer in reactions with silane comonomers for the manufacture of polyalkenyloxysilane polymer and as a fumigant against larvae of the Caribbean fruit fly. | | Uses | trans,trans-2,4-Hexadienal (sorbic aldehyde) was used in the synthesis of chiral cycloadducts. | | Preparation | Can be obtained by slowly heating crotonaldehyde with acetaldehyde in the presence of pyridine at 85 to 90°C. | | Aroma threshold values | Detection: 60 to 476 ppb | | Taste threshold values | Taste characteristics at 25 ppm: sweet, green, waxy, aldehydic, with fresh melon nuances. | | General Description | trans,trans-2,4-Hexadienal is a volatile is a flavor compound that is reported to occur in different types of tea. |
| (E,E)-2,4-Hexadienal Preparation Products And Raw materials |
| Raw materials | (2E,4E,6E,8E)-deca-2,4,6,8-tetraenal-->1,1,3,5-Tetramethoxyhexane-->2,4-Hexadienamide, N-methoxy-N-methyl-, (2E,4E)--->2,4-Hexadienal, (2Z,4E)--->OCTA-2,4,6-TRIENAL-->(E,E)-2,4-Hexadien-1-ol-->ETHYL SORBATE-->Z-(1)-ETHOXY-(2)-(TRIBUTYLSTANNYL)ETHYLEN |
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