trans-1,3-pentadiene
Also known as: (3E)-1,3-Pentadiene, (E)-1,3-Pentadiene, 1,3-PENTADIENE, 1-methylbuta-1,3-diene, 3-Pentenoic acid propyl ester, EINECS 217-909-5, MFCD00009295, TRANS-1,3-PENTADIENE, TRANS-PIPERYLENE, propyl 3-pentenoate, trans-1,3-Pentadiene, trans-1,3-Pentadiene (stabilized with TBC), trans-1,3-Pentadiene trans-1,3-Pentadiene 90%, trans-1-Methylbutadiene, trans-1-methyl-1,3-butadiene, trans-Pent-3-ensaeure-propylester, trans-Piperylene, trans-pent-3-enoic acid propyl ester, trans-penta-1,3-diene
trans-1,3-pentadiene (CAS 2004-70-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H8 and a molecular weight of 68.11700 g/mol. Key properties include a melting point of -87ºC(lit.), a boiling point of 42ºC(lit.), a density of 0.683 g/mL at 25ºC(lit.) and a flash point of <-34.4 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H304 and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 2004-70-8
- Jingsj CID
- J-31548-0
- Molecular Formula
- C5H8
- Molecular Weight
- 68.11700 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -87ºC(lit.) |
|---|---|
| Boiling Point | 42ºC(lit.) |
| Density | 0.683 g/mL at 25ºC(lit.) |
| Flash Point | <-34.4 °C |
| Exact Mass | 68.06260 |
| LogP | 1.74850 |
| Additional Property | 2.4 (vs air) |
| Vapor Pressure | 380mmHg at 25°C |
| Refractive Index | n20/D 1.433(lit.) |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H304
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of trans-1,3-pentadiene?
The CAS number of trans-1,3-pentadiene is 2004-70-8.
What are the molecular formula and molecular weight of trans-1,3-pentadiene?
trans-1,3-pentadiene has molecular formula C5H8 and molecular weight 68.11700 g/mol.
Is trans-1,3-pentadiene hazardous?
trans-1,3-pentadiene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H304; H315 — Causes skin irritation.
What are the upstream and downstream products of trans-1,3-pentadiene?
For trans-1,3-pentadiene, Upstream Products: cis-1,3-pentadiene, Pent-1-ene, vinylcyclopropane; Downstream Products: 7-Methyl-1-indanone, cis-1,3-pentadiene, 1-Iodo-3,3,3-trifluoropropane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "trans-1,3-pentadiene (CAS 2004-70-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31548-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.