trans-2-Heptenal
Synonym(s):(E)-2-Heptenal
- CAS NO.：18829-55-5
- Empirical Formula: C7H12O
- Molecular Weight: 112.17
- MDL number: MFCD00007010
- EINECS: 242-608-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:21:03
What is trans-2-Heptenal?
Chemical properties
clear colorless to light yellow liquid
The Uses of trans-2-Heptenal
trans-2-Heptenal is found in the scent-gland secretion of Oebalus pugnax (rice stink bug). trans-2-Heptenal is also an odour active compound found in guava.
Definition
ChEBI: (E)-hept-2-enal is a monounsaturated fatty aldehyde that is (2E)-hept-2-ene which is carrying an oxo group at position 1. Found in the peel of Malaysian pink and white pomelo peel and in the scent gland secretion of the rice stink bug Oebalus pugnax. It has a role as a plant metabolite and a uremic toxin. It is an enal, a monounsaturated fatty aldehyde and a medium-chain fatty aldehyde.
Synthesis Reference(s)
Journal of the American Chemical Society, 108, p. 452, 1986 DOI: 10.1021/ja00263a015
Tetrahedron Letters, 21, p. 3987, 1980 DOI: 10.1016/S0040-4039(00)92851-X
General Description
trans-2-Heptenal is a volatile flavor constituent identified in heated butter and tomato.
Properties of trans-2-Heptenal
| Melting point: | -53.35°C (estimate) |
| Boiling point: | 90-91 °C50 mm Hg(lit.) |
| Density | 0.857 g/mL at 25 °C(lit.) |
| vapor density | >1 (vs air) |
| refractive index | n |
| FEMA | 3165 | TRANS-2-HEPTENAL |
| Flash point: | 128 °F |
| storage temp. | 2-8°C |
| form | neat |
| form | Liquid |
| color | Colorless to Light yellow to Light orange |
| Odor | at 1.00 % in dipropylene glycol. pungent green vegetable fresh fatty |
| JECFA Number | 1360 |
| BRN | 1700822 |
| CAS DataBase Reference | 18829-55-5(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Heptenal, (E)-(18829-55-5) |
| EPA Substance Registry System | 2-Heptenal, (2E)- (18829-55-5) |
Safety information for trans-2-Heptenal
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H226:Flammable liquids H311:Acute toxicity,dermal H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
Computed Descriptors for trans-2-Heptenal
trans-2-Heptenal manufacturer
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