3-[(Trimethylsilyl)ethynyl]toluene

Also known as: trimethyl[(3-methylphenyl)ethynyl]silane, Trimethyl(m-tolylethynyl)silane, 3-Methylphenyl(trimethylsilyl)ethyne, 1-(3-Methylphenyl)-2-(trimethylsilyl)acetylene, 1-Methyl-3-[2-(trimethylsilyl)ethynyl]benzene, Benzene, 1-methyl-3-[2-(trimethylsilyl)ethynyl]-, (2-(3-methylphenyl)ethynyl)trimethylsilane, trimethyl-[2-(3-methylphenyl)ethynyl]silane, 3-(trimethylsilylethynyl)toluene, meta-tolyl-2-(trimethylsilyl)acetylene, trimethyl(2-m-tolylethynyl)silane

3-[(Trimethylsilyl)ethynyl]toluene (CAS 40230-90-8) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C12H16Si and a molecular weight of 188.34100 g/mol. Key properties include a boiling point of 230ºC, a density of 0.9 and a flash point of 88ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40230-90-8
Jingsj CID: J-1503204-9
Molecular Formula: C₁₂H₁₆Si
Molecular Weight: 188.34100 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	230ºC
Density	0.9
Flash Point	88ºC
Exact Mass	188.10200
LogP	3.22390

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 3-[(Trimethylsilyl)ethynyl]toluene?

The CAS number of 3-[(Trimethylsilyl)ethynyl]toluene is 40230-90-8.

What are the molecular formula and molecular weight of 3-[(Trimethylsilyl)ethynyl]toluene?

3-[(Trimethylsilyl)ethynyl]toluene has molecular formula C12H16Si and molecular weight 188.34100 g/mol.

What are the upstream and downstream products of 3-[(Trimethylsilyl)ethynyl]toluene?

For 3-[(Trimethylsilyl)ethynyl]toluene, Upstream Products: 3-Iodotoluene, Trimethylsilylacetylene, 3-Bromotoluene; Downstream Products: 5-Methyl-1-indanone, 3-Methylphenylacetylene, 3'-Methylacetophenone.

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. "3-[(Trimethylsilyl)ethynyl]toluene (CAS 40230-90-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1503204-9 (accessed 2026-11-09).

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