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Product Attributes
Model No.: 25608-40-6
Product Description
Poly-L-aspartic acid is a biodegradable polyamino acid polymer used as a functional ingredient in water treatment, agriculture, cosmetics, and industrial formulations. It is supplied as a powder or aqueous solution for manufacturers developing environmentally friendly chelating agents, dispersants, and polymer-based performance additives.
Unlike small-molecule Amino Acids such as L-Aspartic Acid, Poly-L-aspartic acid is a polymer composed of repeating aspartic acid units linked through peptide bonds. Its biodegradability and functional carboxyl groups make it valuable for sustainable formulation systems.
Poly-L-aspartic acid (PLAsp) is a polyamino acid derived from L-aspartic acid. It contains multiple carboxyl groups along its polymer chain, allowing it to interact with minerals, metal ions, and other components in formulation systems.
Commercial Poly-L-aspartic acid is typically produced through controlled polymerization processes and supplied in different molecular weight ranges depending on application requirements. It is commonly used as a biodegradable alternative to certain synthetic polymers in industrial and agricultural applications.
| Item | Specification |
|---|---|
| Product Name | Poly-L-aspartic acid |
| Abbreviation | PLAsp / Polyaspartic Acid |
| Category | Biopolymer Ingredients / Amino Acid Derivatives / Functional Polymers |
| CAS Number | 25608-40-6 |
| Molecular Formula | (C4H5NO3)n |
| Molecular Weight | Variable depending on polymerization degree |
| Appearance | White to off-white powder or clear to slightly yellow aqueous solution |
| Assay Grade | Common industrial and specialty grades with controlled polymer content |
| Identification Method | GPC/SEC molecular weight analysis, FTIR, and chemical analysis methods |
| Typical Applications | Water treatment, agricultural formulations, detergents, cosmetics, industrial dispersants |
| Shelf Life | Typically 24 months under recommended storage conditions |
| Storage | Store in a cool, dry place, protected from moisture, heat, and direct sunlight |
| Packaging | Common packaging includes 1kg and 5kg bags, 25kg drums, or liquid containers depending on form |
Poly-L-aspartic acid is used as a biodegradable water treatment polymer. It can function as a dispersing and scale-control component in industrial water management systems.
In agriculture, Poly-L-aspartic acid is used in fertilizer and soil-related formulations. Its functional groups allow interaction with mineral nutrients and support formulation performance.
Poly-L-aspartic acid may be incorporated into specialty cosmetic formulations where polymer functionality, film-forming properties, or moisture-related formulation characteristics are required.
Manufacturers use Poly-L-aspartic acid in detergents, dispersants, and other industrial systems requiring biodegradable polymer ingredients.
For buyers sourcing Poly-L-aspartic acid, molecular weight distribution is one of the most important selection factors. Polymer chain length influences solution behavior, dispersion performance, and suitability for different application systems.
| Selection Factor | Why It Matters | Typical Buyer Consideration |
|---|---|---|
| Molecular Weight Range | Affects viscosity, dispersion ability, and application performance | Select according to water treatment, agricultural, cosmetic, or industrial requirements |
| Physical Form | Influences storage, transportation, and processing | Powder and liquid forms may be selected according to production needs |
| Polymer Consistency | Impacts batch-to-batch formulation stability | Evaluate molecular weight data and quality documentation |
| Application Compatibility | Determines suitability within specific systems | Assess compatibility with minerals, surfactants, and other formulation components |
Poly-L-aspartic acid is commonly supplied in powder bags, fiber drums, or liquid containers depending on product form and application requirements. Customized packaging solutions can be arranged according to production, storage, and transportation needs.
Poly-L-aspartic acid supports customized functional ingredient projects. OEM services may include polymer blending, formulation support, customized packaging, labeling solutions, and technical documentation preparation.
Typical quality control procedures for Poly-L-aspartic acid include:
Poly-L-aspartic acid is used as a biodegradable functional polymer in water treatment, agriculture, cosmetics, detergents, and industrial formulations requiring dispersion or chelation properties.
L-Aspartic Acid is a single amino acid molecule, while Poly-L-aspartic acid is a polymer made from repeating aspartic acid units. Their structures and applications are significantly different.
Poly-L-aspartic acid quality is commonly evaluated through molecular weight analysis, structural identification, composition testing, moisture analysis, and other applicable polymer quality procedures.
Poly-L-aspartic acid is a biodegradable functional polymer derived from aspartic acid and used across water treatment, agriculture, cosmetics, and industrial applications. With controlled specifications, reliable quality testing, and flexible supply formats, it supports sustainable formulation development and professional ingredient procurement.
Contact us today to request samples, a COA, technical documents, and a wholesale quotation for Poly-L-aspartic acid.

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