Description

Edta-Cystine Copolymer is a synthetic, water-soluble polymer formed from ethylenediaminetetraacetic acid (EDTA) and the amino acid cystine. This unique structure provides powerful chelating and stabilizing properties, making it highly effective in controlling metal ions and preventing oxidation. It is primarily utilized in the pharmaceutical, cosmetic, and personal care industries where high-purity, multifunctional ingredients are required for formulation stability and efficacy.

Application

• Pharmaceutical Stabilizer: Used in injectable and ophthalmic solutions to chelate trace metal ions that can catalyze degradation, thereby enhancing the shelf-life and stability of active pharmaceutical ingredients (APIs).
• Cosmetic & Personal Care Ingredient: Functions as a sequestrant and antioxidant in creams, lotions, and serums to prevent rancidity and discoloration caused by metal contamination.
• Biochemical Research Reagent: Employed in buffer systems and cell culture media to maintain a metal-free environment for sensitive biochemical and microbiological experiments.
• Cleaning & Chelating Agent: Effective in specialized industrial and laboratory cleaning formulations where control of hard water ions is critical without the environmental persistence of standard EDTA.
• Nutraceutical & Supplement Formulations: May be used as a stabilizing agent in liquid vitamin and mineral supplements to prevent catalytic oxidation.

Basic Information

Product Name	Edta-Cystine Copolymer
CAS No.	80049-86-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	EDTA-Cystine Copolymer; Cystine-EDTA Copolymer; Poly(ethylenediaminetetraacetic acid-cystine); Edetic Acid-Cystine Copolymer; Chelating Polymer; L-Cystine and Ethylenediaminetetraacetic Acid Copolymer; Sequestering Polymer; Metal Ion Control Polymer
EINECS	Contact for details

Quality Control

Our Edta-Cystine Copolymer is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and performance consistency. While specific grades can be produced, our standard quality control includes assessment of assay, residual solvents, and heavy metals. A Certificate of Analysis (COA) documenting all test results is provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the original container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Assay (Titration)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines
pH (1% Solution)	3.0 - 5.0

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