Product Name

  • Name

    Hydroxyphosphono-acetic acid

  • EINECS 405-710-8
  • CAS No. 23783-26-8
  • Article Data3
  • CAS DataBase
  • Density 2.131 g/cm3
  • Solubility
  • Melting Point 108-110oC
  • Formula C2H5O6P
  • Boiling Point 557.7 °C at 760 mmHg
  • Molecular Weight 156.032
  • Flash Point 291.1 °C
  • Transport Information UN 3265
  • Appearance Dark brown liquid
  • Safety 1/2-22-26-36/37/39-45
  • Risk Codes 22-34-43-48/22
  • Molecular Structure Molecular Structure of 23783-26-8 (Hydroxyphosphono-acetic acid)
  • Hazard Symbols CorrosiveC
  • Synonyms Acetic acid, hydroxyphosphono-;HPA;HPAA;2-Hydroxy phosphono acetic acid;
  • PSA 134.10000
  • LogP -1.50130

Hydroxyphosphono-acetic acid Chemical Properties

Molecular structure of Acetic acid, 2-hydroxy-2-phosphono- (CAS NO.23783-26-8) is:

Product Name: Acetic acid, 2-hydroxy-2-phosphono-
CAS Registry Number: 23783-26-8
IUPAC Name: 2-Hydroxy-2-phosphonoacetic acid
Molecular Weight: 156.031261 [g/mol]
Molecular Formula: C2H5O6P
XLogP3-AA: -2.6
H-Bond Donor: 4
H-Bond Acceptor: 6
Surface Tension: 143 dyne/cm
Density: 2.131 g/cm3
Flash Point: 291.1 °C
Enthalpy of Vaporization: 96.48 kJ/mol
Boiling Point: 557.7 °C at 760 mmHg
Vapour Pressure: 9.26E-15 mmHg at 25°C
Product Categories: Industrial/Fine Chemicals; Phosphonate antiscalant

Hydroxyphosphono-acetic acid Uses

 Acetic acid, 2-hydroxy-2-phosphono- (CAS NO.23783-26-8) is widely used in steel, pharmaceutical industries of circulating cooling water system, corrosion inhibition, suitable for low hardness in southern China.

Hydroxyphosphono-acetic acid Safety Profile

Safty information about Acetic acid, 2-hydroxy-2-phosphono- (CAS NO.23783-26-8) is:
Hazard Codes: CorrosiveC
Risk Statements 22-34-43-48/22 
R22:Harmful if swallowed. 
R34:Causes burns. 
R43:May cause sensitization by skin contact. 
R48/22:Harmful: danger of serious damage to health by prolonged exposure if swallowed.
Safety Statements: 1/2-22-26-36/37/39-45 
S1/2:Keep locked up and out of the reach of children. 
S22:Do not breathe dust. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 3265
HazardClass: 8
PackingGroup: II

Hydroxyphosphono-acetic acid Specification

 Acetic acid, 2-hydroxy-2-phosphono- , its cas register number is 23783-26-8. It also can be called Acetic acid, hydroxyphosphono- ; 2-Hydroxy phosphono acetic acid ; HPA ; HPAA .

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