Hydroxyphosphono-acetic acid

2-羟基膦酰基乙酸

Also known as: 2-hydroxy-2-phosphonoacetic acid, 2-hydroxyphosphonoacetic acid, 2-Phosphonoglycolic acid, Phosphonoglycolic acid, HPA, HPAA, Belcor 575, Acetic acid, hydroxyphosphono-, MFCD01940970, EINECS 405-710-8

Hydroxyphosphono-acetic acid (CAS 23783-26-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H5O7P and a molecular weight of 172.031 g/mol. It is also known as 2-hydroxy-2-phosphonoacetic acid, 2-hydroxyphosphonoacetic acid and 2-Phosphonoglycolic acid. Key properties include a melting point of 108-110ºC, a boiling point of 515.4±60.0 °C at 760 mmHg, a density of 2.2±0.1 g/cm3 and a flash point of 265.5±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
23783-26-8
Jingsj CID
J-18760-2
Molecular Formula
C2H5O7P
Chinese Name
2-羟基膦酰基乙酸
Molecular Weight
172.031 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point108-110ºC
Boiling Point515.4±60.0 °C at 760 mmHg
Density2.2±0.1 g/cm3
Flash Point265.5±32.9 °C

Frequently Asked Questions

What is the CAS number of Hydroxyphosphono-acetic acid?

The CAS number of Hydroxyphosphono-acetic acid is 23783-26-8.

What are the molecular formula and molecular weight of Hydroxyphosphono-acetic acid?

Hydroxyphosphono-acetic acid has molecular formula C2H5O7P and molecular weight 172.031 g/mol.

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

Last updated:

How to cite: Jingsj. "Hydroxyphosphono-acetic acid (CAS 23783-26-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18760-2 (accessed 2026-10-23).

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