Description

3-Mercaptopropanesulphonic Acid is a versatile organosulfur compound featuring both a thiol (-SH) and a sulfonic acid (-SO3H) functional group, making it a valuable building block and catalyst in advanced chemical synthesis. Its dual reactivity allows it to act as a potent reducing agent, a ligand for metal complexes, and a key intermediate for functional materials. This product is essential for manufacturers and R&D facilities in the pharmaceutical, polymer, and specialty chemical sectors seeking to develop novel compounds or enhance reaction efficiencies.

Application

• Electroplating Additive: Used as a brightening and leveling agent in copper and other metal electroplating baths to improve deposit quality and uniformity.
• Pharmaceutical Intermediate: Serves as a key synthon in the production of various active pharmaceutical ingredients (APIs), particularly those requiring thiol or sulfonate functionalities.
• Polymer Modification: Acts as a chain transfer agent (CTA) or cross-linking agent in radical polymerization processes to control molecular weight and introduce functional groups.
• Catalyst & Ligand: Functions as a ligand for metal catalysts in organic synthesis and as a co-catalyst in various chemical reactions.
• Chemical Synthesis: Employed as a reducing agent and a versatile building block for synthesizing more complex organosulfur compounds and surfactants.
• Research & Development: Utilized in academic and industrial R&D for exploring new catalytic systems, material science applications, and biochemical studies.

Basic Information

Product Name	3-Mercaptopropanesulphonic Acid
CAS No.	49594-30-1
Molecular Formula	C₃H₈O₃S₂
Molecular Weight	156.22 g/mol
Synonyms	3-Mercapto-1-propanesulfonic Acid; MPS; 3-MPSA; Mercaptopropanesulfonic Acid; 3-Sulfanylpropane-1-sulfonic Acid; Thiopropanesulfonic Acid; Sodium 3-Mercapto-1-propanesulfonate (salt form); 3-Mercaptopropylsulfonic Acid
EINECS	256-464-3

Quality Control

Our 3-Mercaptopropanesulphonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay by titration and impurity profiling, to ensure it meets high-purity standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and specific test results is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its properties as a strong acid/organic solvent and being easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term stability and to minimize moisture absorption. Keep away from incompatible materials such as strong oxidizing agents and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Titration)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Report and comply with limits
Specific Gravity	1.30 - 1.40

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