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(Trimethylsilyl)acetic acid

(三甲基甲硅烷基)乙酸

Also known as: Trimethylsilylacetic acid, 2-(Trimethylsilyl)acetic acid, 2-(Trimethylsilyl)ethanoic acid, Acetic acid, 2-(trimethylsilyl)-, Silanol, 1,1,1-trimethyl-, acetate (incorrectly used), Me3SiCH2COOH

(Trimethylsilyl)acetic acid (CAS 2345-38-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H12O2Si and a molecular weight of 132.233 g/mol. It is also known as Trimethylsilylacetic acid, 2-(Trimethylsilyl)acetic acid and 2-(Trimethylsilyl)ethanoic acid. Key properties include a melting point of 39-42 °C(lit.), a boiling point of 107.5±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 4.4±0.0 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2345-38-2
Jingsj CID
J-48100-3
Molecular Formula
C5H12O2Si
Chinese Name
(三甲基甲硅烷基)乙酸
Molecular Weight
132.233 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point39-42 °C(lit.)
Boiling Point107.5±0.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point4.4±0.0 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of (Trimethylsilyl)acetic acid?

The CAS number of (Trimethylsilyl)acetic acid is 2345-38-2.

What are the molecular formula and molecular weight of (Trimethylsilyl)acetic acid?

(Trimethylsilyl)acetic acid has molecular formula C5H12O2Si and molecular weight 132.233 g/mol.

Is (Trimethylsilyl)acetic acid hazardous?

(Trimethylsilyl)acetic acid has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "(Trimethylsilyl)acetic acid (CAS 2345-38-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48100-3 (accessed 2026-10-22).

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