Trimethylsilylketene

Also known as: 2-trimethylsilylethenone, (Trimethylsilyl)ketene, 2-(Trimethylsilyl)ethene-1-one, Ethenone, 2-(trimethylsilyl)-, MFCD00054882, TRIMETHYLSILYLKETENE

Trimethylsilylketene (CAS 4071-85-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H10OSi and a molecular weight of 114.21800 g/mol. Key properties include a boiling point of 80-82ºC, a density of 0.813 and a flash point of 3.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4071-85-6
Jingsj CID: J-10831-6
Molecular Formula: C₅H₁₀OSi
Molecular Weight: 114.21800 g/mol
Category: Ketones
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	80-82ºC
Density	0.813
Flash Point	3.2ºC
Exact Mass	114.05000
PSA	17.07000
LogP	1.25160
Refractive Index	1.413

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 Trimethylsilylketene?

The CAS number of Trimethylsilylketene is 4071-85-6.

What are the molecular formula and molecular weight of Trimethylsilylketene?

Trimethylsilylketene has molecular formula C5H10OSi and molecular weight 114.21800 g/mol.

What are the upstream and downstream products of Trimethylsilylketene?

For Trimethylsilylketene, Upstream Products: Chlorotrimethylsilane, Ethoxyethyne, (Trimethylsilyl)acetic acid; Downstream Products: Ethyl trimethylsilylacetate, 3H-naphtho[2,1-b]pyran-3-one, (E)-4-Phenylbut-2-enoic acid.

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. "Trimethylsilylketene (CAS 4071-85-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10831-6 (accessed 2026-11-09).

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