trans-2-Pentenal
Synonym(s):(E)-2-Pentenal;2-Ethylacrylic aldehyde
- CAS NO.：1576-87-0
- Empirical Formula: C5H8O
- Molecular Weight: 84.12
- MDL number: MFCD00009615
- EINECS: 216-414-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:21
What is trans-2-Pentenal?
Chemical properties
CLEAR COLORLESS TO YELLOW LIQUID
The Uses of trans-2-Pentenal
(E)-2-Pentenal, is a flavor volatile found in tomato, virgin olive oil and sardine.
Definition
ChEBI: (E)-2-pentenal is a 2-pentenal in which the double bond has (E)-configuration. It is found in cigarette smoke, virgin olive oil, and milk. It has a role as a plant metabolite.
General Description
Trans-2-Pentenal (pentenal) is an α,β-unsaturated aldehyde that increases [Ca2+] in cultured neonatal rat trigeminal ganglion (TG) neurons. The gas-phase reactions of NO3 radicals with pentenal in pure N2, using a relative rate technique, was studied.
Safety Profile
Mutation data reported. When heated to decompositionit emits acrid smoke and irritating vapors.
Properties of trans-2-Pentenal
| Melting point: | -101.15°C (estimate) |
| Boiling point: | 80-81 °C/160 mmHg (lit.) |
| Density | 0.86 g/mL at 25 °C (lit.) |
| refractive index | n |
| FEMA | 3218 | 2-PENTENAL |
| Flash point: | 73 °F |
| storage temp. | 0-6°C |
| solubility | Chloroform (Soluble), Ethyl Acetate (Slightly), Methanol (Slightly) |
| form | Liquid |
| color | Clear colorless to yellow |
| Odor | at 1.00 % in dipropylene glycol. pungent green fruity apple orange tomato |
| Water Solubility | Insoluble |
| Sensitive | Air Sensitive |
| BRN | 1719742 |
| Stability: | Light Sensitive |
| CAS DataBase Reference | 1576-87-0(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-pentenal(E)(1576-87-0) |
Safety information for trans-2-Pentenal
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H225:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for trans-2-Pentenal
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