Trimethyl(p-tolylethynyl)silane

Also known as: Silane, trimethyl[(4-methylphenyl)ethynyl]-, 1-Methyl-4-[2-(trimethylsilyl)ethynyl]benzene, Benzene, 1-methyl-4-[2-(trimethylsilyl)ethynyl]-, Trimethyl[(4-methylphenyl)ethynyl]silane, (4-Methylphenylethynyl)trimethylsilane, para-tolyl-2-(trimethylsilyl)acetylene, trimethyl-[2-(4-methylphenyl)ethynyl]silane

Trimethyl(p-tolylethynyl)silane (CAS 4186-14-5) 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. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4186-14-5
Jingsj CID: J-1458679-9
Molecular Formula: C₁₂H₁₆Si
Molecular Weight: 188.34100 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

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 Trimethyl(p-tolylethynyl)silane?

The CAS number of Trimethyl(p-tolylethynyl)silane is 4186-14-5.

What are the molecular formula and molecular weight of Trimethyl(p-tolylethynyl)silane?

Trimethyl(p-tolylethynyl)silane has molecular formula C12H16Si and molecular weight 188.34100 g/mol.

What are the upstream and downstream products of Trimethyl(p-tolylethynyl)silane?

For Trimethyl(p-tolylethynyl)silane, Upstream Products: 4-Iodotoluene, Trimethylsilylacetylene, 4-Bromotoluene; Downstream Products: 4-Ethynyltoluene, 1-METHYL-4-PHENYLETHYNYL-BENZENE, 6-Methyl-1-indanone.

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(p-tolylethynyl)silane (CAS 4186-14-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1458679-9 (accessed 2026-11-09).

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