Trimethylacetic anhydride

特戊酸酐

Also known as: Pivalic anhydride, 2,2-Dimethylpropionic anhydride, 2,2-Dimethylpropanoic anhydride, Bis(trimethylacetic) anhydride, Bis(2,2-dimethylpropionic) anhydride, Pivaloyl anhydride, Neopentanoic anhydride

Trimethylacetic anhydride (CAS 1538-75-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H18O3 and a molecular weight of 186.248 g/mol. It is also known as Pivalic anhydride, 2,2-Dimethylpropionic anhydride and 2,2-Dimethylpropanoic anhydride. Key properties include a boiling point of 193.0±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 57.2±0.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1538-75-6
Jingsj CID
J-1361750-3
Molecular Formula
C10H18O3
Chinese Name
特戊酸酐
Molecular Weight
186.248 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point193.0±0.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point57.2±0.0 °C

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of Trimethylacetic anhydride?

The CAS number of Trimethylacetic anhydride is 1538-75-6.

What are the molecular formula and molecular weight of Trimethylacetic anhydride?

Trimethylacetic anhydride has molecular formula C10H18O3 and molecular weight 186.248 g/mol.

Is Trimethylacetic anhydride hazardous?

Trimethylacetic anhydride has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "Trimethylacetic anhydride (CAS 1538-75-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1361750-3 (accessed 2026-10-22).

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