Description

Chloromethanesulfonic Acid is a versatile organosulfur compound characterized by its strong acidic properties and utility as a reactive intermediate. This chemical is valued for its ability to introduce the chloromethanesulfonyl functional group, enabling critical transformations in fine chemical synthesis. It serves as a key building block for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel compounds or modify molecular structures.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly in constructing sulfonamide derivatives and other sulfur-containing drug candidates.
• Agrochemical Synthesis: Serves as a precursor in the production of herbicides, fungicides, and plant growth regulators requiring the chloromethanesulfonyl moiety.
• Polymer Modification: Employed as a functionalizing agent to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.
• Catalyst and Ligand Preparation: Utilized in the preparation of specialized catalysts and ligands for organic synthesis and industrial chemical processes.
• Fine Chemical Production: Acts as a versatile reagent in multistep organic synthesis for creating dyes, pigments, and other high-value specialty chemicals.
• Research & Development: A valuable tool in academic and industrial R&D labs for exploring new synthetic methodologies and compound libraries.

Basic Information

Product Name	Chloromethanesulfonic Acid
CAS No.	10352-63-3
Molecular Formula	C H3 Cl O3 S
Molecular Weight	130.55 g/mol
Synonyms	Chloromethanesulphonic Acid; (Chloromethyl)sulfonic Acid; Monochloromethanesulfonic Acid; CMSA; Chloromethylsulfonic Acid; α-Chloromethanesulfonic Acid; NSC 402124; Chloromethanesulfonicacid
EINECS	233-771-1

Quality Control

Our Chloromethanesulfonic Acid is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, impurity profile, and physical properties. We are committed to supplying material that supports your critical applications and complies with relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Due to its nature as a strong acid/organic solvent, containers must be kept tightly sealed to prevent moisture absorption and decomposition. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Chloride Content	≤ 0.5%
Related Impurities (HPLC)	≤ 2.0% total

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