Sodium Polyaspartate (PASP) CAS 35608-40-6

PASP is produced by polymerization of aspartic acid and subsequent neutralization with sodium. The polymer chain is rich in carboxyl and amide groups, which gives it strong chelating and dispersing power, high thermal stability in water systems, and excellent biodegradability.

As a new-generation eco-friendly water treatment agent, Sodium Polyaspartate can partially or completely replace traditional phosphonate and polyacrylate antiscalants, helping end users reduce phosphate discharge and the risk of eutrophication while keeping heat-exchange surfaces clean and efficient.

Physicochemical Properties

Note: Values above are typical data, not guaranteed specifications. Custom specifications can be supplied according to client requirements.

Applications

1. Industrial Water Treatment

• Circulating cooling water & open recirculating systems – Acts as a non-phosphorus scale and corrosion inhibitor for CaCO₃, CaSO₄, BaSO₄ and Ca₃(PO₄)₂ scales, maintaining heat-exchange efficiency.
• Boiler water, RO and desalination systems – Controls hardness scale and dispersed iron, reduces cleaning frequency and extends membrane/equipment life.
• High-hardness & high-alkalinity systems – Shows good performance at high cycles of concentration where conventional agents fail.

2. Oilfield & Drilling

• Used as a corrosion inhibitor and scale inhibitor in oilfield injection water and produced-water re-injection systems.
• As a viscosity reducer / dispersant in drilling fluids, helps to thin bentonite mud and improve rheology.

3. Detergent & Cleaning Formulations

• Functions as a biodegradable builder and dispersant in household and industrial detergents, dishwashing liquids and hard-surface cleaners.
• Helps soften water, disperse soil, prevent re-deposition and improve overall cleaning performance.

4. Agriculture & Forestry

• Used as a fertilizer synergist / soil conditioner to improve nutrient availability and uptake of N, P, K and trace elements.
• Can enhance plant stress resistance and yield when combined with fertilizers or certain pesticides.

5. Other Uses

• Dispersant or chelating agent in pigments, coatings, leather, paper, and inorganic chemicals.

For detailed formulation suggestions in your specific system, please contact: info@industrochem.com.

Storage Conditions

• Store in tightly closed original containers.
• Keep in a cool, dry, well-ventilated warehouse, away from direct sunlight and heat sources.
• Recommended storage temperature: 5 – 35 °C; avoid freezing.
• Under proper storage conditions, typical shelf life is about 10–12 months from production date.

If product is stored beyond the recommended period, re-test key parameters before use.

Safety Precautions

• Alkaline liquid; avoid contact with eyes, skin and clothing.
• Wear suitable protective gloves, goggles and protective clothing when handling.
• In case of contact with skin or eyes, rinse immediately with plenty of clean water and seek medical advice if irritation persists.
• Do not ingest. If swallowed, rinse mouth and seek medical attention.
• Do not discharge large quantities into surface water or sewage systems; follow local environmental regulations.
• Refer to the detailed SDS/MSDS for complete safety and handling information.