1,3,5,7-Cyclooctatetraene
Also known as: 1,3,5,7-COT, 1,3,5,7-CYCLOOCTATETRAENE, COT, CYCLOOCTATETRAENE, CYCLOOCTATETRAENE(1,3,5,7-), CyclooctatetraeneCOTpaleyellowliq, EINECS 211-080-3, MFCD00004161, [8]Annulene, [8]annulene, cyclooctatetraene, cyclooctatetraene stab.
1,3,5,7-Cyclooctatetraene (CAS 629-20-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H8 and a molecular weight of 104.14900 g/mol. Key properties include a melting point of −5-−3 °C(lit.), a boiling point of 142-143 °C(lit.), a density of 0.925 g/mL at 25 °C(lit.) and a flash point of 22.2 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 629-20-9
- Jingsj CID
- J-1087247-9
- Molecular Formula
- C8H8
- Molecular Weight
- 104.14900 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −5-−3 °C(lit.) |
|---|---|
| Boiling Point | 142-143 °C(lit.) |
| Density | 0.925 g/mL at 25 °C(lit.) |
| Flash Point | 22.2 °C |
| Exact Mass | 104.06300 |
| LogP | 2.22480 |
| Refractive Index | n20/D 1.537(lit.) |
Frequently Asked Questions
What is the CAS number of 1,3,5,7-Cyclooctatetraene?
The CAS number of 1,3,5,7-Cyclooctatetraene is 629-20-9.
What are the molecular formula and molecular weight of 1,3,5,7-Cyclooctatetraene?
1,3,5,7-Cyclooctatetraene has molecular formula C8H8 and molecular weight 104.14900 g/mol.
What are the upstream and downstream products of 1,3,5,7-Cyclooctatetraene?
For 1,3,5,7-Cyclooctatetraene, Upstream Products: Acetylene, cubane, 1,5-cyclooctadiene; Downstream Products: 1,2-Bis(trifluoromethyl)benzene, Cyclooctene, Cyclooctane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3,5,7-Cyclooctatetraene (CAS 629-20-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1087247-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.