n-Hexylphosphonic acid

正己基磷酸

Also known as: Hexylphosphonic acid, 1-Hexanephosphonic acid, Hexanephosphonic acid, NSC 222656, n-Hexylphosphonic acid, 1-Hexylphosphonic acid

n-Hexylphosphonic acid (CAS 4721-24-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H15O3P and a molecular weight of 166.15500 g/mol. It is also known as Hexylphosphonic acid, 1-Hexanephosphonic acid and Hexanephosphonic acid. Key properties include a melting point of 108-110ºC, a boiling point of 299.7ºC at 760 mmHg, a density of 1.132 g/cm3 and a flash point of 135ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4721-24-8
Jingsj CID
J-44137-9
Molecular Formula
C6H15O3P
Chinese Name
正己基磷酸
Molecular Weight
166.15500 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point108-110ºC
Boiling Point299.7ºC at 760 mmHg
Density1.132 g/cm3
Flash Point135ºC

Frequently Asked Questions

What is the CAS number of n-Hexylphosphonic acid?

The CAS number of n-Hexylphosphonic acid is 4721-24-8.

What are the molecular formula and molecular weight of n-Hexylphosphonic acid?

n-Hexylphosphonic acid has molecular formula C6H15O3P and molecular weight 166.15500 g/mol.

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

Last updated:

How to cite: Jingsj. "n-Hexylphosphonic acid (CAS 4721-24-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44137-9 (accessed 2026-10-24).

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