4-Chlorophenylphosphonic acid

4-氯苯基膦酸

Also known as: (4-Chlorophenyl)phosphonic acid, (p-Chlorophenyl)phosphonic acid, p-Chlorobenzenephosphonic acid, NSC 13560, Phosphonic acid, P-(4-chlorophenyl)-

4-Chlorophenylphosphonic acid (CAS 5431-35-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H6ClO3P and a molecular weight of 192.53700 g/mol. It is also known as (4-Chlorophenyl)phosphonic acid, (p-Chlorophenyl)phosphonic acid and p-Chlorobenzenephosphonic acid. Key properties include a melting point of 187ºC, a boiling point of 378ºC at 760mmHg, a density of 1.57g/cm3 and a flash point of 182.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5431-35-6
Jingsj CID
J-1367006-3
Molecular Formula
C6H6ClO3P
Chinese Name
4-氯苯基膦酸
Molecular Weight
192.53700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point187ºC
Boiling Point378ºC at 760mmHg
Density1.57g/cm3
Flash Point182.4ºC

Frequently Asked Questions

What is the CAS number of 4-Chlorophenylphosphonic acid?

The CAS number of 4-Chlorophenylphosphonic acid is 5431-35-6.

What are the molecular formula and molecular weight of 4-Chlorophenylphosphonic acid?

4-Chlorophenylphosphonic acid has molecular formula C6H6ClO3P and molecular weight 192.53700 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Chlorophenylphosphonic acid (CAS 5431-35-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1367006-3 (accessed 2026-10-23).

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