Description

Poly-L-Aspartic Acid Sodium Salt is a biodegradable, water-soluble polymer derived from the amino acid aspartic acid. This environmentally friendly compound serves as a highly effective scale and corrosion inhibitor, offering a superior, non-phosphorus alternative to traditional additives. It is essential for industries requiring high-performance, sustainable solutions for water treatment, detergents, and agriculture.

Application

• Water Treatment: Primary application as a biodegradable scale inhibitor and dispersant for cooling water, boiler water, and reverse osmosis systems.
• Detergents & Cleaners: Acts as a builder and anti-redeposition agent in phosphate-free laundry and dishwashing detergents.
• Agriculture: Used in fertilizer coatings and soil conditioners to enhance nutrient uptake and efficiency.
• Personal Care: Functions as a conditioning agent and viscosity modifier in cosmetics and hair care products.
• Oilfield Chemicals: Employed in drilling fluids and production chemicals for scale control.
• Industrial Cleaning: Key component in industrial and institutional (I&I) cleaning formulations for hard surface cleaners.
• Pulp & Paper: Used as a dispersant and process aid in paper manufacturing.
• Textile Auxiliaries: Serves as a dye-leveling agent and anti-precipitant in dyeing processes.

Basic Information

Product Name	Poly-L-Aspartic Acid Sodium Salt
CAS No.	31871-95-1
Molecular Formula	(C4H4NO4Na)n • xH2O
Molecular Weight	~1,000 - 10,000 g/mol (variable, based on polymerization degree)
Synonyms	Poly(aspartic acid) sodium salt; Sodium Polyaspartate; PASP-Na; L-Aspartic acid homopolymer sodium salt; Poly(alpha,β-DL-aspartic acid) sodium salt; Polyaspartate; Aminosuccinic acid polymer sodium salt; Biodegradable polyamino acid
EINECS	Contact for details

Quality Control

Our Poly-L-Aspartic Acid Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance and purity, meeting the specifications required for industrial and specialty applications. Certificates of Analysis (COA) documenting key parameters such as assay, molecular weight distribution, and residual solvents are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to light yellow powder
Identification (IR)	Conforms
Assay (on dry basis)	≥ 95.0%
pH (1% aqueous solution)	8.0 - 10.0
Loss on Drying	≤ 8.0%
Residue on Ignition (Sulfated Ash)	30.0 - 40.0%
Heavy Metals (as Pb)	≤ 20 ppm
Molecular Weight (Average)	3,000 - 5,000 Da (other ranges available)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.