1-Chloro-4-(trimethylsilyl)but-3-yn-2-one

Also known as: 1-chloro-4-(trimethylsilyl)-3-butyn-2-one, 1-chloro-4-(trimethylsilyl)-3-butyne-2-one, 1-chloro-4-(trimethylsilyl)but-3-yn-2-one, 1-chloro-4-trimethylsilyl-3-butyn-2-one, 1-chloro-4-trimethylsilylbut-3-yn-2-one, 3-butyn-2-one, 1-chloro-4-(trimethylsilyl)-, 4-chloro-1-(trimethylsilyl)-1-butyn-3-one, 4-trimethylsilyl-1-chloro-3-butyn-2-one, 1-chloro-4-trimethylsilanyl-but-3-yn-2-one

1-Chloro-4-(trimethylsilyl)but-3-yn-2-one (CAS 18245-82-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H11ClOSi and a molecular weight of 174.70000 g/mol. Key properties include a boiling point of 187.04ºC at 760 mmHg, a density of 1.018g/cm3 and a flash point of 66.92ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18245-82-4
Jingsj CID: J-1521276-7
Molecular Formula: C₇H₁₁ClOSi
Molecular Weight: 174.70000 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	187.04ºC at 760 mmHg
Density	1.018g/cm3
Flash Point	66.92ºC
Exact Mass	174.02700
PSA	17.07000
LogP	1.67510
Vapor Pressure	0.643mmHg at 25°C
Refractive Index	1.45

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 1-Chloro-4-(trimethylsilyl)but-3-yn-2-one?

The CAS number of 1-Chloro-4-(trimethylsilyl)but-3-yn-2-one is 18245-82-4.

What are the molecular formula and molecular weight of 1-Chloro-4-(trimethylsilyl)but-3-yn-2-one?

1-Chloro-4-(trimethylsilyl)but-3-yn-2-one has molecular formula C7H11ClOSi and molecular weight 174.70000 g/mol.

What are the upstream and downstream products of 1-Chloro-4-(trimethylsilyl)but-3-yn-2-one?

For 1-Chloro-4-(trimethylsilyl)but-3-yn-2-one, Upstream Products: Chloroacetyl chloride, Bis(trimethylsilyl)acetylene, 2-Chloro-N-methoxy-N-methylacetamide.

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. "1-Chloro-4-(trimethylsilyl)but-3-yn-2-one (CAS 18245-82-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1521276-7 (accessed 2026-11-09).

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