1,2,3,4-Tetramethylcyclopentadiene
Also known as: 1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE, 1,2,3,4-TETRAMETHYLCYCLOPENTADIENE, 1,2,3,4-Tetramethyl-1,3-cyclopentadiene, 1,2,3,4-Tetramethyl-1,3-cyclopentadiene ,93%, 1,2,3,4-Tetramethyl-1,3-cyclopentadiene,85%, 1,2,3,4-Tetramethylcyclopenta-1,3-diene, 1,2,3,4-tetramethyl-cyclopentadiene, 1,3-Cyclopentadiene, 1,2,3,4-tetramethyl-, MFCD00145385, TETRAMETHYLCYCLOPENTADIENE, Tetramethylcyclopentadiene, Tetramethylcyclopentadiene, mixed isomers, 90+%, Tetrmethylcyclopendadiene, tetramethylcyclopentadiene, mixed isomers
1,2,3,4-Tetramethylcyclopentadiene (CAS 4249-10-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H14 and a molecular weight of 122.207 g/mol. Key properties include a boiling point of 146.8±7.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 27.5±13.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4249-10-9
- Jingsj CID
- J-5526-5
- Molecular Formula
- C9H14
- Molecular Weight
- 122.207 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 146.8±7.0 °C at 760 mmHg |
|---|---|
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 27.5±13.0 °C |
| Exact Mass | 122.109550 |
| LogP | 4.15 |
| Vapor Pressure | 5.8±0.1 mmHg at 25°C |
| Refractive Index | 1.470 |
| Additional Property | Not miscible mix with mater. |
Customs & Trade Information
| HS Code | 2902199090 |
|---|---|
| Summary | 2902199090 other cyclanes, cyclenes and cyclotherpenes。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1,2,3,4-Tetramethylcyclopentadiene?
The CAS number of 1,2,3,4-Tetramethylcyclopentadiene is 4249-10-9.
What are the molecular formula and molecular weight of 1,2,3,4-Tetramethylcyclopentadiene?
1,2,3,4-Tetramethylcyclopentadiene has molecular formula C9H14 and molecular weight 122.207 g/mol.
What are the upstream and downstream products of 1,2,3,4-Tetramethylcyclopentadiene?
For 1,2,3,4-Tetramethylcyclopentadiene, Upstream Products: 2,3,4,5-Tetramethyl-2-cyclopenten-1-one, Dimethyl sulfate, Sodium cyclopentadienide; Downstream Products: dimethylbis(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane, Trimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane, Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,2,3,4-Tetramethylcyclopentadiene (CAS 4249-10-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5526-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.