Description

L-Aspartic Acid, Monopotassium Salt, Homopolymer (9Ci) is a synthetic polyamino acid derivative of aspartic acid, where the carboxylic acid groups are partially neutralized with potassium. This specialized polymer is valued for its unique combination of biocompatibility, anionic character, and metal-chelating properties, making it a versatile functional ingredient. It is primarily sought by manufacturers in the pharmaceutical, cosmetic, and advanced materials sectors for applications requiring controlled release, stabilization, or specific ionic interactions.

Application

• Pharmaceutical Excipient: Used as a biodegradable carrier or coating material in controlled-release drug delivery systems and tablet formulations.
• Cosmetic Ingredient: Functions as a skin-conditioning agent, humectant, and stabilizer in skincare and haircare products due to its moisture-binding and film-forming properties.
• Chelating Agent: Effective in sequestering divalent metal ions (e.g., Ca²⁺, Mg²⁺) in industrial water treatment, detergent formulations, and personal care products to prevent scaling and improve efficacy.
• Biomaterial Research: Serves as a building block for synthesizing biocompatible hydrogels, scaffolds, and other polymeric structures for tissue engineering and medical devices.
• Dispersant & Scale Inhibitor: Applied in industrial cleaning formulations and cooling water systems to prevent the precipitation and deposition of inorganic salts.
• Agricultural Adjuvant: Can be utilized in certain fertilizer or agrochemical formulations to enhance nutrient delivery or stabilization.

Basic Information

Item	Details
Product Name	L-Aspartic Acid, Monopotassium Salt, Homopolymer (9Ci)
CAS No.	184704-75-4
Molecular Formula	(C₄H₆NO₄K)ₙ
Molecular Weight	n × 171.19 g/mol (monomer unit)
Synonyms	Poly(aspartic acid) potassium salt; Potassium polyaspartate; Poly-L-aspartic acid potassium salt; Poly(α,β-DL-aspartic acid) potassium salt; PAsp-K; K-PASP; Aspartic acid homopolymer potassium salt; (S)-Poly(2-aminosuccinic acid) potassium salt
EINECS	Contact for details

Quality Control

Our production of L-Aspartic Acid, Monopotassium Salt, Homopolymer adheres to stringent quality management protocols. Each batch is characterized and tested to ensure consistent molecular weight distribution, purity, and ionic content. Certificates of Analysis (COA) documenting key parameters such as assay, residual solvents, heavy metals, and microbiological limits are provided and can be tailored to meet specific customer or regulatory requirements, including those for pharmaceutical (GMP) or cosmetic applications.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect flow properties and stability.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to structure
Assay (as potassium salt)	≥ 95.0% (on anhydrous basis)
pH (1% aqueous solution)	6.0 - 8.0
Loss on Drying	≤ 5.0 %
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents	Meets ICH guidelines
Microbiological Total Plate Count	≤ 1000 cfu/g

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