Propanoic acid, 2,2-dimethyl-, butyl ester

2,2-二甲基丙酸丁酯

Also known as: butyl pivalate, n-butyl pivalate, butyl 2,2-dimethylpropanoate, pivalic acid butyl ester, 2,2-dimethylpropionic acid butyl ester

Propanoic acid, 2,2-dimethyl-, butyl ester (CAS 5129-37-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H18O2 and a molecular weight of 158.23800 g/mol. It is also known as butyl pivalate, n-butyl pivalate and butyl 2,2-dimethylpropanoate. Key properties include a boiling point of 164.4ºC at 760 mmHg, a density of 0.876g/cm3 and a flash point of 52.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5129-37-3
Jingsj CID
J-1060048-9
Molecular Formula
C9H18O2
Chinese Name
2,2-二甲基丙酸丁酯
Molecular Weight
158.23800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point164.4ºC at 760 mmHg
Density0.876g/cm3
Flash Point52.1ºC

Frequently Asked Questions

What is the CAS number of Propanoic acid, 2,2-dimethyl-, butyl ester?

The CAS number of Propanoic acid, 2,2-dimethyl-, butyl ester is 5129-37-3.

What are the molecular formula and molecular weight of Propanoic acid, 2,2-dimethyl-, butyl ester?

Propanoic acid, 2,2-dimethyl-, butyl ester has molecular formula C9H18O2 and molecular weight 158.23800 g/mol.

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

Last updated:

How to cite: Jingsj. "Propanoic acid, 2,2-dimethyl-, butyl ester (CAS 5129-37-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1060048-9 (accessed 2026-10-24).

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