Description

Methanesulfonic Acid CAS NO 17696-73-0 is a versatile and strong organic acid with excellent solubility in water and organic solvents. Its high acidity, low volatility, and non-oxidizing nature make it a valuable and often preferred alternative to mineral acids in various industrial processes. This product is essential for manufacturers in the pharmaceutical, electroplating, and polymer industries, where it serves as a catalyst, electrolyte, and synthesis intermediate.

Application

• Electroplating & Metal Finishing: Used as a key component in tin and lead electroplating baths, offering superior throwing power and smooth, bright deposits.
• Pharmaceutical Synthesis: Acts as an efficient acid catalyst and reagent in esterification, alkylation, and other organic synthesis steps for active pharmaceutical ingredients (APIs).
• Polymer & Resin Production: Serves as a catalyst in the production of phenolic resins, polyester, and other polymers.
• Chemical Synthesis & Catalysis: Employed as a green, recyclable, and highly acidic catalyst in various organic transformations, including dehydration and condensation reactions.
• Oil & Gas Industry: Used in acidizing treatments for oil wells to dissolve carbonate scales and improve permeability.
• Cleaning & Descaling: An effective component in industrial cleaning formulations for removing rust, scale, and mineral deposits from metal surfaces.
• Battery Electrolyte: Investigated for use in advanced battery systems due to its conductive properties and stability.
• Textile & Dye Processing: Utilized as a pH adjuster and catalyst in dyeing and finishing processes.

Basic Information

Product Name	Methanesulfonic Acid
CAS No.	17696-73-0
Molecular Formula	CH4O3S
Molecular Weight	96.11 g/mol
Synonyms	Methanesulphonic Acid; Methylsulfonic Acid; MSA; Mesylic Acid; Kyselina methansulfonova; Methansulfonsaeure; Acide methanesulfonique; NSC 3718
EINECS	241-711-7

Quality Control

Our Methanesulfonic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color, and other critical parameters. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing the results of tests such as assay, water content, and heavy metals. We can supply grades suitable for industrial, technical, and high-purity applications.

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. Recommended storage temperature is between 15°C and 25°C. The product is hygroscopic; ensure containers are kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay	≥ 99.0 %
Water Content	≤ 0.5 %
Color (APHA)	≤ 50
Residue on Ignition	≤ 0.05 %
Chloride (Cl)	≤ 50 ppm
Sulfate (SO4)	≤ 100 ppm
Iron (Fe)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 10 ppm

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