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CAS：23783-26-8
Purity：50%
Molecular Formula：C2H5O6P
Molecular Weight：156.03
EINECS：405-710-8
Storage Period：2 year
Synonym：
hydroxyphosphono-aceticaci; 2-HYDROXY PHOSPHONOACETIC ACID; Acetic acid, hydroxyphosphono-; 2-Hydroxy Phosphonoacetic Acid (HPA); HYDROXYPHOSPHONEACETICACID; HPA; HPAA; Hydroxyphosphono-acetic acid.
What is Hydroxyphosphono-acetic Acid CAS 23783-26-8?
Hydroxyphosphono-acetic Acid (HPA) CAS 23783-26-8 is a high-performance organophosphorus scale and corrosion inhibitor widely used in industrial water treatment. It contains both phosphonic and carboxylic functional groups, giving it excellent chelating ability, thermal stability, and resistance to hydrolysis. HPA is highly effective in preventing calcium carbonate, calcium phosphate, and calcium sulfate scale, while also providing good corrosion inhibition.
Specification
| ITEM | STANDARD |
| Appearance | Dark umber liquid |
| Solid content, % | 50.0 min |
| Total phosphonic acid (as PO43-), % | 25.0 min |
| Phosphoric acid (as PO43-), % | 1.50 max |
| Density (20℃), g/cm3 | 1.30 min |
| pH (1% water solution) | 1.0-3.0 |
Key Features
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Excellent scale inhibition for calcium and other inorganic salts
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Dual functional groups (phosphonic & carboxylic) for strong chelating performance
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High thermal and chemical stability in water treatment environments
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Low toxicity and good biodegradability, making it environmentally friendly
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Effective in wide pH ranges, suitable for complex industrial systems
Applications
1. Industrial Water Treatment
Used in circulating cooling water, boilers, and oilfield water systems to prevent scale and corrosion.
2. Detergents & Cleaners
Serves as a chelating and dispersing agent in household and industrial cleaning formulations.
3. Textile & Dyeing Industry
Improves dyeing quality by preventing metal ion interference.
4. Paper & Pulp Industry
Applied as a scale inhibitor to maintain equipment efficiency.
5. Oilfield Chemicals
Enhances efficiency of water injection systems by reducing scale formation and equipment fouling.
Packaging
250KG/DRUM
