Description

Carboxymethylmercaptosuccinic Acid is a multifunctional organic compound featuring both carboxylic acid and thiol (mercapto) groups, making it a versatile intermediate and chelating agent. Its unique structure provides excellent metal-binding properties, which is critical for applications requiring precise control over metal ions in solution. This chemical is essential for manufacturers and researchers in the pharmaceutical, water treatment, and specialty chemical synthesis sectors seeking high-purity, reliable raw materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and chelation therapy agents.
• Water Treatment Chemical: Acts as a scale inhibitor and chelating agent in industrial water systems to control hardness ions like calcium and magnesium.
• Metal Chelation & Plating: Serves as a complexing agent in electroplating baths and metal finishing processes to improve deposit quality.
• Polymer Modification: Functions as a monomer or cross-linking agent for producing specialty polymers with enhanced properties.
• Analytical Reagent: Employed in laboratory settings as a standard or reagent for complexometric titrations and metal ion analysis.
• Cosmetic Additive: Used in trace amounts in specific formulations as a stabilizer or chelant.
• Agricultural Chemical Synthesis: An intermediate in the production of certain herbicides and plant growth regulators.
• Research & Development: A valuable building block in organic synthesis and material science research.

Basic Information

Product Name	Carboxymethylmercaptosuccinic Acid
CAS No.	99-68-3
Molecular Formula	C6H8O6S
Molecular Weight	208.19 g/mol
Synonyms	CMTS; 2-(Carboxymethylthio)succinic Acid; 3-Carboxy-3-thiapentanedioic Acid; Mercaptosuccinic Acid O-Acetic Acid; Thiomalic Acid Acetic Acid; (Carboxymethylthio)butanedioic Acid; NSC 403169; Succinic Acid, (carboxymethylthio)-
EINECS	202-780-7

Quality Control

Our Carboxymethylmercaptosuccinic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets the high standards required for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of heat. The product may be hygroscopic (moisture-sensitive).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158°C - 165°C
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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