Sodium Polyaspartate (PASP) - Phosphorus-free, non-toxic, fully biodegradable polyamino acid (CAS 181828-06-8). Excellent scale and corrosion inhibitor for water treatment, detergents, agriculture, and cosmetics.
| Molecular Weight | 3000-8000 |
| pH Value | Alkaline (formulation dependent) |
| Appearance | Liquid or powder |
Product Name: Sodium Polyaspartate (PASP)
CAS No: 181828-06-8, 34345-47-6, 94525-01-6
Molecular Formula: C₄H₅NO₃M(C₄H₄NO₃M)ₘ(C₄H₄NO₃M)ₙC₄H₄NO₃M₂
Molecular Weight: 3000-4000 or 7000-8000 g/mol
Synonyms:
PASP-Na, Polyaspartic Acid Sodium Salt, Eco-friendly Polyamino Acid

Sodium Polyaspartate (PASP-Na) is a phosphorus-free, non-toxic, and fully biodegradable environmentally friendly polyamino acid chemical. Its main chain peptide bonds are easily decomposed by fungi and microorganisms, ultimately degrading into harmless water and carbon dioxide, making it safe and reliable.
Eco-Friendly & Biodegradable: 100% biodegradable with no ecological toxicity
Multifunctional: Combines dispersion, scale inhibition, corrosion inhibition, and chelation
Strong Weather Resistance: Suitable for high hardness, high alkalinity, and high temperature water conditions
Excellent Compatibility: Works well with other water treatment chemicals
| Specification | Parameter |
Appearance | Liquid or powder |
pH Value | Alkaline (formulation dependent) |
Molecular Weight | 3000-8000 g/mol |
Solid Content | ≥ 40% (liquid), ≥ 90% (powder) |
Biodegradability | ≥ 80% in 28 days |
Water Treatment
Efficient scale and corrosion inhibitor for salt chemical industry, oilfield injection water, seawater desalination, industrial circulating water, boiler water systems
Particularly suitable for high hardness/high alkalinity/high temperature water systems
Detergent Additives
Green detergent enhancer (dishwashing liquid, laundry detergent, industrial cleaners):
Water softening, stain dispersion, anti-redeposition
Electrolyte resistance, alkali resistance, low foaming
Agricultural Applications
Fertilizer synergist: Promotes phosphorus absorption, enhances root development
Soil conditioner: Alleviates compaction, improves saline-alkali soil
Drip irrigation systems: Prevents pipeline scaling
Pesticide adjuvant: Improves drug efficacy
Cosmetics
Moisture retention: Enhances skin elasticity, used in moisturizing skincare products
Other Industries
Oil extraction, textiles, leather tanning, sugar manufacturing, metal surface treatment
Liquid Products: 25kg/drum, 250kg/drum, 1250kg/drum (customizable)
Powder Products: Moisture-proof kraft paper bags
Storage Conditions: Keep sealed and protected from light, store at room temperature (liquid products recommended ≤25°C)
Shelf Life: 24 months (under proper storage conditions)
Alkaline substance. Wear appropriate protective equipment during operation. Avoid contact with skin and eyes. In case of contact, rinse immediately with plenty of water
Documentation:
[Safety Data Sheet (SDS)]
[Technical Data Sheet (TDS)]
[Application Guide]
Sample Request:
Contact our technical team for complimentary samples and expert support
Technical Service:
Our experts provide application solutions and technical consultin
Disclaimer: Product information is based on current knowledge and believed to be accurate. Users should conduct their own testing to determine suitability for specific applications.
| Molecular Weight | 3000-8000 |
| pH Value | Alkaline (formulation dependent) |
| Appearance | Liquid or powder |