TRANS-1,3-PENTADIENE
Synonym(s):trans-Piperylene
- CAS NO.：2004-70-8
- Empirical Formula: C5H8
- Molecular Weight: 68.12
- MDL number: MFCD00009295
- EINECS: 217-909-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 13:16:52
What is TRANS-1,3-PENTADIENE?
Definition
ChEBI: An alkadiene consisting of pentane with the two double bonds located at positions 1 and 3.
General Description
Trans-1,3-Pentadiene spectra is recorded in the 5000-17500 cm(-1) region with conventional and intracavity laser photoacoustic spectroscopy. It can be determined by the spectrophotometric method based on the Diels-Alder reaction. In this reaction, cisoid 1,3-dienes and tetracyanoethylene (TCNE) react with an aromatic-TCNE pi-complex.
Safety Profile
Poison by intravenous route. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification Methods
Distil the diene from NaBH4. Purify it also by preparative gas chromatography. [Reimann et al. J Am Chem Soc 108 5527 1986, Beilstein 1 IV 994.]
Properties of TRANS-1,3-PENTADIENE
| Melting point: | -87 °C (lit.) |
| Boiling point: | 42 °C (lit.) |
| Density | 0.678 g/mL at 20 °C
0.683 g/mL at 25 °C (lit.) |
| vapor density | 2.4 (vs air) |
| vapor pressure | 6.56 psi ( 20 °C) |
| refractive index | n |
| Flash point: | <−30 °F |
| storage temp. | 2-8°C |
| form | clear liquid |
| color | Colorless to Almost colorless |
| Specific Gravity | 0.6764 |
| BRN | 1523659 |
| Dielectric constant | 2.3199999999999998 |
| Stability: | Stable. Highly flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 2004-70-8(CAS DataBase Reference) |
| EPA Substance Registry System | 1,3-Pentadiene, (3E)- (2004-70-8) |
Safety information for TRANS-1,3-PENTADIENE
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H304:Aspiration hazard 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. P233:Keep container tightly closed. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. 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-1,3-PENTADIENE
New Products
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