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N-Methyl-N-(trimethylsilyl)acetamide

Also known as: MSA, N-Methyl-N-TMS-acetamide, N-Trimethylsilyl-N-methylacetamide, N-Methyl-N-trimethylsilyl-acetamide(MSA)

N-Methyl-N-(trimethylsilyl)acetamide (CAS 7449-74-3) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C6H15NOSi and a molecular weight of 145.275 g/mol. Key properties include a boiling point of 139.5±7.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 38.2±18.2 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7449-74-3
Jingsj CID
J-925349-0
Molecular Formula
C6H15NOSi
Molecular Weight
145.275 g/mol
Category
Organic Bases
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point139.5±7.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point38.2±18.2 °C
Exact Mass145.092285
PSA20.31000
LogP0.57
Vapor Pressure6.4±0.3 mmHg at 25°C
Refractive Index1.419

GHS Safety & Compliance

FlammableSignal word: Warning
  • H226 — Flammable liquid and vapour

Frequently Asked Questions

What is the CAS number of N-Methyl-N-(trimethylsilyl)acetamide?

The CAS number of N-Methyl-N-(trimethylsilyl)acetamide is 7449-74-3.

What are the molecular formula and molecular weight of N-Methyl-N-(trimethylsilyl)acetamide?

N-Methyl-N-(trimethylsilyl)acetamide has molecular formula C6H15NOSi and molecular weight 145.275 g/mol.

Is N-Methyl-N-(trimethylsilyl)acetamide hazardous?

N-Methyl-N-(trimethylsilyl)acetamide has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.

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

Last updated:

How to cite: Jingsj. "N-Methyl-N-(trimethylsilyl)acetamide (CAS 7449-74-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-925349-0 (accessed 2026-11-09).

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