【CAS】23783-26-8
Alias: Hydroxyphosphonocarboxylic acid
Molecular formula: C2H5O6P Relative molecular mass: 156
Structural formula:
- Product Property
HPAA is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPAA 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.
- Quality Index:
| Item | Index |
| Appearance | Dark umber transparent viscous liquid |
| Solid content % | 47～50 |
| Phosphorous acid（as PO33-）% | 4.0max |
| Density （20℃）g/cm3 | 1.30 |
| PH (1％ aqueous solution) | 1～3 |
- Application scope and Usage
HPAA 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.
- Package and Storage
It is normally packed in 30kg plastic drum and can be stored for one year in shady and dry place under room condition.
- 5. Safety Protection
HPAA is a weakly acidic substance. When using it, personal protective equipment should be worn. It should be avoided from coming into contact with eyes or skin. If it gets on the body, it should be immediately rinsed with plenty of water.
