4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester

4-二苯基膦基苯甲酸 2-(三甲基硅基)乙酯

Also known as: 2-(Trimethylsilyl)ethyl 4-(diphenylphosphino)benzoate, 4-Diphenylphosphanylbenzoic acid 2-(trimethylsilyl)ethyl ester, Benzoic acid, 4-(diphenylphosphino)-, 2-(trimethylsilyl)ethyl ester, 4-Diphenylphosphanyl-benzoic acid 2-trimethylsilanyl-ethyl ester

4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester (CAS 566190-45-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C24H27O2PSi and a molecular weight of 406.52900 g/mol. It is also known as 2-(Trimethylsilyl)ethyl 4-(diphenylphosphino)benzoate, 4-Diphenylphosphanylbenzoic acid 2-(trimethylsilyl)ethyl ester and Benzoic acid, 4-(diphenylphosphino)-, 2-(trimethylsilyl)ethyl ester. Key properties include a boiling point of 486.1ºC at 760 mmHg, a density of 0.925 g/mL at 25ºC and a flash point of -20ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 566190-45-2
Jingsj CID: J-1050093-8
Molecular Formula: C₂₄H₂₇O₂PSi
Chinese Name: 4-二苯基膦基苯甲酸 2-(三甲基硅基)乙酯
Molecular Weight: 406.52900 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	486.1ºC at 760 mmHg
Density	0.925 g/mL at 25ºC
Flash Point	-20ºC

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of 4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester?

The CAS number of 4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester is 566190-45-2.

What are the molecular formula and molecular weight of 4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester?

4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester has molecular formula C24H27O2PSi and molecular weight 406.52900 g/mol.

Is 4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester hazardous?

4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester has GHS signal word Danger.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-(Diphenylphosphino)benzoic acid 2-(trimethylsilyl)ethyl ester (CAS 566190-45-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1050093-8 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.