Trimethylsilylcyclopentadiene (mixture of isomers)
Also known as: 5-(Trimethylsilyl)-1,3-cyclopentadiene, Cyclopentadienyltrimethylsilane, 5-Trimethylsilylcyclopentadiene, 5-trimethylsilyl-1,3-cyclopentadiene, 1-Trimethylsilyl-2,4-cyclopentadiene, 1-trimethylsilylcyclopenta-2,4-diene, 2,4-Cyclopentadien-1-yltrimethylsilane, Cyclopenta-2,4-dien-1-yl(trimethyl)silane, Cyclopenta-2,4-dienyltrimethylsilane, CPTMS, Trimethylsilylcyclopentadiene
Trimethylsilylcyclopentadiene (mixture of isomers) (CAS 3559-74-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H14Si and a molecular weight of 138.282 g/mol. Key properties include a melting point of -19 °C, a boiling point of 150.2±9.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 29.7±12.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3559-74-8
- Jingsj CID
- J-11312-2
- Molecular Formula
- C8H14Si
- Molecular Weight
- 138.282 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -19 °C |
|---|---|
| Boiling Point | 150.2±9.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 29.7±12.3 °C |
| Exact Mass | 138.086472 |
| LogP | 3.30 |
| Vapor Pressure | 4.9±0.3 mmHg at 25°C |
| Refractive Index | 1.465 |
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Trimethylsilylcyclopentadiene (mixture of isomers)?
The CAS number of Trimethylsilylcyclopentadiene (mixture of isomers) is 3559-74-8.
What are the molecular formula and molecular weight of Trimethylsilylcyclopentadiene (mixture of isomers)?
Trimethylsilylcyclopentadiene (mixture of isomers) has molecular formula C8H14Si and molecular weight 138.282 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimethylsilylcyclopentadiene (mixture of isomers) (CAS 3559-74-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11312-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.