Description

4-Mercaptobutane-1-Sulphonic Acid is a versatile organosulfur compound featuring both a thiol (mercapto) and a sulfonic acid functional group. This dual functionality makes it a valuable intermediate and additive in advanced chemical synthesis and industrial processes. It is particularly sought after by manufacturers in the pharmaceutical, polymer, and specialty chemical sectors for its role as a chain transfer agent, catalyst, or building block in the production of high-performance materials and active pharmaceutical ingredients (APIs).

Application

• As a chain transfer agent (CTA) in radical polymerization processes to control polymer molecular weight and architecture.
• An intermediate in the synthesis of pharmaceutical compounds, including certain antivirals and enzyme inhibitors.
• A key raw material for producing specialty surfactants and surface-modifying agents with unique properties.
• Used in the formulation of electroplating additives and brighteners for metal finishing applications.
• As a catalyst or co-catalyst in various organic synthesis reactions.
• In research and development for creating novel functional polymers and materials with tailored thiol or sulfonate groups.

Basic Information

Product Name	4-Mercaptobutane-1-Sulphonic Acid
CAS No.	24687-42-1
Molecular Formula	C4H10O3S2
Molecular Weight	170.25 g/mol
Synonyms	4-Mercaptobutanesulfonic Acid; 4-Sulfanylbutane-1-sulfonic Acid; 1-Butanesulfonic Acid, 4-mercapto-; MBTSA; 4-Mercapto-1-butanesulfonic Acid; Sodium 4-Mercaptobutane-1-Sulfonate (salt form); Thiobutanesulfonic Acid
EINECS	Contact for details

Quality Control

Our production of 4-Mercaptobutane-1-Sulphonic Acid adheres to stringent quality management protocols. Each batch is subjected to comprehensive analytical testing, including assay (HPLC), identification (IR), and impurity profiling, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and quality assurance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and easily oxidized; it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term stability. Keep away from strong oxidizing agents, strong bases, and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Related Substances (HPLC)	Individual impurity ≤ 1.0%

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