(4-aminophenyl)phosphonic acid

(4-氨基苯基)膦酸

Also known as: phosphanilic acid, aniline-4-phosphonic acid, (p-aminophenyl)phosphonic acid, 4-Phosphonoaniline, p-Phosphonoaniline, p-Aminobenzenephosphonic acid

(4-aminophenyl)phosphonic acid (CAS 5337-17-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H8NO3P and a molecular weight of 173.106 g/mol. It is also known as phosphanilic acid, aniline-4-phosphonic acid and (p-aminophenyl)phosphonic acid. Key properties include a melting point of 245 °C, a boiling point of 441.4±47.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 220.7±29.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5337-17-7
Jingsj CID
J-1174817-9
Molecular Formula
C6H8NO3P
Chinese Name
(4-氨基苯基)膦酸
Molecular Weight
173.106 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point245 °C
Boiling Point441.4±47.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point220.7±29.3 °C

Frequently Asked Questions

What is the CAS number of (4-aminophenyl)phosphonic acid?

The CAS number of (4-aminophenyl)phosphonic acid is 5337-17-7.

What are the molecular formula and molecular weight of (4-aminophenyl)phosphonic acid?

(4-aminophenyl)phosphonic acid has molecular formula C6H8NO3P and molecular weight 173.106 g/mol.

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

Last updated:

How to cite: Jingsj. "(4-aminophenyl)phosphonic acid (CAS 5337-17-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1174817-9 (accessed 2026-10-25).

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