Trimethylamine N-oxide

三甲胺N-氧化物

Also known as: Trimethylamine oxide, TMAO, N,N-dimethylmethanamine N-oxide, N,N-dimethylmethanamine oxide, Trimethyloxamine, Triox, Trimethylamineoxid, Amine oxide, trimethyl-, EINECS 214-675-6, MFCD00002048, Methanamine,N,N-dimethyl-,N-oxide

Trimethylamine N-oxide (CAS 1184-78-7) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C3H9NO and a molecular weight of 75.110 g/mol. It is also known as Trimethylamine oxide, TMAO and N,N-dimethylmethanamine N-oxide. Key properties include a melting point of 220-222ºC(lit.), a boiling point of 133.8°C (rough estimate) and a density of 0.9301 (rough estimate). GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1184-78-7
Jingsj CID
J-12060-9
Molecular Formula
C3H9NO
Chinese Name
三甲胺N-氧化物
Molecular Weight
75.110 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point220-222ºC(lit.)
Boiling Point133.8°C (rough estimate)
Density0.9301 (rough estimate)

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Trimethylamine N-oxide?

The CAS number of Trimethylamine N-oxide is 1184-78-7.

What are the molecular formula and molecular weight of Trimethylamine N-oxide?

Trimethylamine N-oxide has molecular formula C3H9NO and molecular weight 75.110 g/mol.

Is Trimethylamine N-oxide hazardous?

Trimethylamine N-oxide 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. "Trimethylamine N-oxide (CAS 1184-78-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12060-9 (accessed 2026-10-22).

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