Polyaspartic Acid (PASP) Scale Inhibitor
CAS Number: 35608-01-6
Polyaspartic Acid (PASP) is a biodegradable, environmentally friendly scale inhibitor and dispersant for oilfield water systems, cooling water, and produced water injection. It provides effective threshold inhibition of calcium carbonate, calcium sulfate, and calcium phosphate scales. PASP is particularly valued in environmentally sensitive offshore and onshore operations where biodegradable chemistry is mandated.
Technical Specifications
| appearance | Light yellow to brown liquid |
| pH (1% solution) | 8.0–10.0 |
| active content (%) | ≥40 |
| molecular weight (Da) | 1000–5000 |
| biodegradability (BOD₅/COD) | ≥0.5 |
Applications
- Oilfield injection water scale inhibition
- Environmentally sensitive offshore operations
- Cooling water scale and corrosion control
- Produced water re-injection systems
- Reverse osmosis membrane antiscalant
Key Features
- Readily biodegradable, meeting offshore environmental regulations
- Effective scale inhibition at low dosage (1–10 ppm)
- Compatible with most oilfield treatment chemicals
- Non-phosphorus formulation reduces eutrophication risk
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