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Phosphonates Antiscalants, Corrosion
Inhibitors and Chelating Agents
- 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
- 2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTC)
- Amino Trimethylene Phosphonic Acid (ATMP)
- Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA)
- 2-Hydroxy Phosphonoacetic Acid (HPAA)
- More
Salts of Phosphonates
- Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP?Na₄)
- Tetra Sodium Salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP?Na₄)
- 2-Phosphonobutane -1,2,4-Tricarboxylic Acid, Sodium salt (PBTC?Na₄)
- Penta sodium salt of Amino Trimethylene Phosphonic Acid (ATMP?Na₅)
- Hepta sodium salt of Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMP?Na₇)
- Potassium Salt of HexaMethylene-DiamineTetra (MethylenePhosphonic Acid) HMDTMPA?K₆
- More
Polycarboxylic antiscalant and dispersant
- Polyacrylic Acid (PAA) 50%
- Polyacrylic Acid Sodium Salt (PAAS) 45%
- Hydrolyzed Polymaleic Anhydride (HPMA)
- Polymaleic Acid (PMA)
- Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer (AA/AMPS)
- Copolymer of Maleic and Acrylic Acid (MA/AA)
- More
Biodegradable antiscalant and dispersant
- Sodium of Polyepoxysuccinic Acid (PESA)
- Sodium Salt of Polyaspartic Acid (PASP)
Biocide and Algicide
- Dodecyl Dimethyl Benzyl Ammonium Chloride (Benzalkonium Chloride)(DDBAC/BKC)
- Isothiazolinones (CMIT/MIT)
- GLUTARALDEHYDE
- Tetrakis(hydroxymethyl)phosphonium sulfate(THPS)
- More
Built Scale & Corrosion Inhibitors and Pretreatment Filming Agents
- TH-907 Non-P Scale&Corrosion Inhibitor
- TH-503 Scale and Corrosion Inhibitor for Boiler
- TH-503B Scale and Corrosion Inhibitor for Boiler
- TH-504 Scale and Corrosion Inhibitor for Heating Water
- TH-601 Scale and Corrosion Inhibitor for Iron & Steel Plant
- TH-604 Scale and Corrosion Inhibitor for Power Plant
- More
Corrosion Inhibitor
- Sodium salt of Tolyltriazole (TTA?Na)
- Tolyltriazole (TTA)
- Sodium salt of 1,2,3-Benzotriazole (BTA?Na)
- 1,2,3-Benzotriazole (BTA)
- Corrosion Inhibitor for Hydrochloric Acid Cleaning
- More
Oxygen Scavenger
- Cyclohexylamine
- Morpholine
Reverse Osmosis Chemicals
- TH-0100 Antiscalant and Dispersant for RO Membrane
- TH-150 Antiscalant and Dispersant for RO Membrane
- TH-200 Antiscalant and Dispersant for RO Membrane
- TH-191 Antiscalant and Dispersant for RO Membrane
- More
Other
- Sodium Diethylhexyl Sulfosuccinate
- Acetyl chloride
- TH-GC Green Chelating Agent (Glutamic Acid,N,N-diacetic Acid, Tetra Sodium Salt)

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HOME >> Water Treatment Chemicals >> Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents

2-Hydroxyphosphonocarboxylic Acid (HPA)

CAS No. 23783-26-8

Molecular Formula: C₂H₅O₆P Molecular weight: 156

Structural Formula:

2-Hydroxy Phosphonoacetic Acid (HPAA)

Properties:

HPA is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPA can improve zinc solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When built with low molecular polymers, its corrosion inhibition effect is even better.

Specification:

Items	Index
Appearance	Dark umber liquid
Solid content %	50.0 min
Total phosphonic acid(as PO₄^3-)%	25.0 min
Phosphoric acid (as PO₄^3- )%	1.5 max
Density (20℃) g/cm³	1.30 min
pH(1% water solution)	3.0 max

Usage:

HPA is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as steel & iron, petrochemcal, power plant and medical industries. When built with zinc salt, the effect is even better.