Methanesulfonic Acid, a potent organic acid characterized by its high ionic conductivity and non-oxidizing properties, is a critical chemical reagent used extensively in industrial electroplating and catalytic synthesis. This liquid chemical functions as a highly effective electrolyte in metal finishing processes, particularly for tin and solder plating, where it facilitates uniform metal deposition and prevents the formation of insoluble salts. In the production of pharmaceutical intermediates and fine chemicals, it serves as an efficient acid catalyst for esterification, alkylation, and polymerization reactions, offering superior reaction selectivity compared to traditional mineral acids. We provide this material with competitive factory pricing, supporting requirements for customized specifications to meet specific concentration and high-purity electronic grade standards. All shipments are accompanied by comprehensive MSDS, TDS, COA documentation to ensure regulatory safety and are available for bulk supply via corrosion-resistant logistics systems to support continuous industrial manufacturing.
Methanesulfonic Acid CAS 75-75-2
- CAS: 75-75-2
- Synonyms: Mesic acid, MSA, Methylsulfonic acid, Methanesulphonic acid, Methansulfonic acid
- Einecs: 200-898-6
- Molecular Formula: CH4O3S
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packing
Product Description
Methanesulfonic acid
Also known as: methane sulfonic acid adipic acid 1-(2,5-dioxo-1-pyrrolil)ester 6-methyl ester
Chemical formula: CH4O3S
CAS accession number: 75-75-2
Flash point: 189°C
Melting point: -60°C
Molecular weight: 96.11
Boiling point: 167°C (1.33kPa)
Density: 1.481
EINECS accession number: 200-898-6
Low Chloride (<10ppm) and Low Metal Content grades available for electronics plating.
Methane sulfonic acid is a raw material for pharmaceuticals and pesticides, and can also be used as a dehydrating agent, coating curing accelerator, fiber treatment agent, solvent, alkylation, esterification and polymerization reaction catalyst. Used as a catalyst for solvent, esterification and polymerization reactions.
Storage method:
This product should be sealed and stored in a cool and dry place away from light. This product is packaged in 250kg plastic drums or steel-plastic drums. Store in a cool and ventilated warehouse. Stay away from fire and heat sources. Isolate storage and transportation from oxidizing agents and alkalis.
First aid measures
Skin contact: Remove contaminated clothing immediately and rinse with plenty of running water for at least 15 minutes. Medical treatment.
Eye contact: Lift the eyelid immediately and rinse thoroughly with plenty of running water or saline for at least 15 minutes. Medical treatment.
Inhalation: Quickly leave the scene to fresh air. Keep your airways open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration and seek medical attention immediately.
Food: Rinse your mouth with water and give milk or egg white. Medical treatment.
FAQ - Technical & Supply Chain
-
Q:
Does Methanesulfonic Acid correspond to the solid aromatic sulfonic acid or the liquid aliphatic acid?
A: Methanesulfonic Acid is verified under CAS 75-75-2 as the simplest aliphatic alkane sulfonic acid (MSA), distinguishing it from the solid p-Toluenesulfonic Acid (PTSA) to ensure a liquid handling profile at room temperature and superior biodegradability for green chemical synthesis. -
Q:
Why is Methanesulfonic Acid frequently substituted for Sulfuric Acid in organic synthesis and esterification?
A: Methanesulfonic Acid is typically applied as a strong acid catalyst because, unlike Sulfuric Acid, it is non-oxidizing, which prevents the charring, carbonization, or discoloration of sensitive organic substrates during high-temperature reactions.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
