Trimethyl[4-(phenylethynyl)phenyl]silane

Also known as: 4-(Trimethylsilyl)diphenylacetylene, 4-Trimethylsilyl tolan, Benzene, 1-(2-phenylethynyl)-4-(trimethylsilyl)-, MFCD09953470, T2596

Trimethyl[4-(phenylethynyl)phenyl]silane (CAS 136459-72-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C17H18Si and a molecular weight of 250.410 g/mol. Key properties include a melting point of 39ºC, a boiling point of 344.2±25.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 148.1±16.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 136459-72-8
Jingsj CID: J-27071-3
Molecular Formula: C₁₇H₁₈Si
Molecular Weight: 250.410 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	39ºC
Boiling Point	344.2±25.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	148.1±16.7 °C
Exact Mass	250.117783
LogP	7.28
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.562

Frequently Asked Questions

What is the CAS number of Trimethyl[4-(phenylethynyl)phenyl]silane?

The CAS number of Trimethyl[4-(phenylethynyl)phenyl]silane is 136459-72-8.

What are the molecular formula and molecular weight of Trimethyl[4-(phenylethynyl)phenyl]silane?

Trimethyl[4-(phenylethynyl)phenyl]silane has molecular formula C17H18Si and molecular weight 250.410 g/mol.

What are the upstream and downstream products of Trimethyl[4-(phenylethynyl)phenyl]silane?

For Trimethyl[4-(phenylethynyl)phenyl]silane, Upstream Products: 1-Bromo-4-(trimethylsilyl)benzene, Phenylacetylene, Iodobenzene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Trimethyl[4-(phenylethynyl)phenyl]silane (CAS 136459-72-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27071-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.