Phosphate Esters & Derivatives Available to Source

2-Hydroxyphosphonocarboxylic Acid (HPAA)

HPAA
CAS 23783-26-8 · MF C2H5O6P · MW 156.03 g/mol

2-Hydroxyphosphonocarboxylic Acid (HPAA) is a phosphonic acid compound that acts as a scale inhibitor and chelating agent in water treatment applications. It

SDS / TDS Download
CAS Number
23783-26-8
Molecular Formula
C2H5O6P
Molecular Weight
156.03 g/mol
Material Family
Phosphate Esters & Derivatives
Physical Properties
physical_description
Brown liquid. Slight acrid odor.
GHS / SDS Safety Danger
Irritant Health Hazard Corrosive
  • H318 (84%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
  • H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
  • H302 (99.4%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H373 (100%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
  • H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
  • H302: Harmful if swallowed [Warning Acute toxicity, oral]
  • H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
  • H317 (100%): May cause an allergic skin reaction [Warning Sensitization, Skin]
  • H373 **: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
  • H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
  • H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
Chemical Identity
CAS Number23783-26-8
IUPAC Name2-hydroxy-2-phosphonoacetic acid
InChI KeyUTCHNZLBVKHYKC-UHFFFAOYSA-N
PubChem CID 73189
Synonyms & Trade Names
Hydroxyphosphonoacetic acid Acetic acid, 2-hydroxy-2-phosphono- Belclene 575 RefChem:147249 Acetic acid, hydroxyphosphono Acetic acid, 2hydroxy2phosphono DTXCID10813562 2-hydroxy-2-phosphonoacetic acid Hydroxyphosphono-acetic acid Acetic acid, hydroxyphosphono- 2-hydroxy-2-phosphono-acetic acid Hydroxyphosphonoacetic Acid - 50% in water Hydroxy(phosphono)acetic acid Phosphono-hydroxy-acetic acid 2-hydroxy phosphono acetic acid
Full Description

2-Hydroxyphosphonocarboxylic Acid (HPAA) is a phosphonic acid compound that acts as a scale inhibitor and chelating agent in water treatment applications. It