![Molecular structure of 1,4-Bis[(trimethylsilyl)ethynyl]benzene (CAS 17938-13-5)](/images/chem_structures_svg/071/17938-13-5.svg)
1,4-Bis[(trimethylsilyl)ethynyl]benzene
Also known as: 1,4-bis[2-(trimethylsilyl)ethynyl]benzene, trimethyl-[2-[4-(2-trimethylsilylethynyl)phenyl]ethynyl]silane, MFCD00135433, TIMTEC-BB SBB009009, 1,4-Bis(trimethylsilyl)ethynylbenzene
1,4-Bis[(trimethylsilyl)ethynyl]benzene (CAS 17938-13-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C16H22Si2 and a molecular weight of 270.51700 g/mol. Key properties include a melting point of 119 °C, a boiling point of 292.1ºC at 760mmHg, a density of 0.92g/cm3 and a flash point of 112.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 17938-13-5
- Jingsj CID
- J-49972-9
- Molecular Formula
- C16H22Si2
- Molecular Weight
- 270.51700 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 119 °C |
|---|---|
| Boiling Point | 292.1ºC at 760mmHg |
| Density | 0.92g/cm3 |
| Flash Point | 112.2ºC |
| Exact Mass | 270.12600 |
| LogP | 4.14440 |
| Vapor Pressure | 0.00327mmHg at 25°C |
| Refractive Index | 1.505 |
Frequently Asked Questions
What is the CAS number of 1,4-Bis[(trimethylsilyl)ethynyl]benzene?
The CAS number of 1,4-Bis[(trimethylsilyl)ethynyl]benzene is 17938-13-5.
What are the molecular formula and molecular weight of 1,4-Bis[(trimethylsilyl)ethynyl]benzene?
1,4-Bis[(trimethylsilyl)ethynyl]benzene has molecular formula C16H22Si2 and molecular weight 270.51700 g/mol.
What are the upstream and downstream products of 1,4-Bis[(trimethylsilyl)ethynyl]benzene?
For 1,4-Bis[(trimethylsilyl)ethynyl]benzene, Upstream Products: 1,4-Diiodobenzene, Trimethylsilylacetylene, 1,4-Dibromobenzene; Downstream Products: 1-Ethynyl-4-((4-nitrophenyl)ethynyl)benzene, 1,4-Diethynylbenzene, 1,4-BIS(PHENYLETHYNYL)BENZENE.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,4-Bis[(trimethylsilyl)ethynyl]benzene (CAS 17938-13-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49972-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.