Methanesulfonyl Chloride at a Glance
Methanesulfonyl chloride, commonly called mesyl chloride, is a moisture-sensitive sulfonylation reagent identified by CAS 124-63-0. It is supplied as transparent oily liquid with assay >99.5%. Its formula is CH3ClO2S and molecular weight is 114.55 g/mol. Supply specification: Assay >99.5%. ZXCHEM supplies this material from China in 250 kg net PE drums, IBC or ISO tank.
Request a free sample for testing.
Standard lead time is approximately 14 days from order confirmation.
Methanesulfonyl Chloride Specifications
Grade-specific supply limits. The agreed specification and batch COA govern delivery.
Commercial Information
Storage & Shipping
Storage Conditions
Store locked and tightly sealed in dry, compatible original containers in a cool, ventilated area. Exclude water and moisture; segregate from bases, alcohols, oxidizing agents and incompatible reactants.
Packaging Integrity
Inspect container seals, liners and pallet wrapping before unloading. Retain product and lot labels; use clean, dry tools and reseal opened packages promptly.
Packaging
250 kg net PE drums, IBC or ISO tank
Handling & Protection
Use a closed, dry transfer system with effective local extraction. Prevent inhalation and all skin or eye exposure; use chemical-resistant gloves, protective clothing and eye/face protection. Establish respiratory and emergency controls through a qualified exposure assessment.
What Is Methanesulfonyl Chloride?
Methanesulfonyl chloride, commonly called mesyl chloride, is a moisture-sensitive sulfonylation reagent identified by CAS 124-63-0. ZXCHEM supplies transparent oily liquid with assay >99.5%. Its formula is CH3ClO2S and molecular weight is 114.55 g/mol.
Supply controls include colour ≤20 APHA, water ≤20 ppm, iron ≤10 ppm and heavy metals ≤10 ppm. These criteria help select material for moisture-sensitive synthesis and impurity-sensitive routes. Keep the analytical specification distinct from typical physical properties and handling requirements.
Qualified chemical manufacturers evaluate mesyl chloride in alcohol mesylation, sulfonamide preparation and selected pharmaceutical, agrochemical and fine-chemical intermediates. Control reaction heat, moisture, reagent addition and off-gas through a technically established process. The material is not intended for direct consumer use.
Standard commercial packing is 250 kg net PE drums, IBC or ISO tank; compatible, approved dangerous-goods packaging governs the shipment. The reference is UN 3246, Class 6.1 with subsidiary Class 8, packing group I, and forbidden for air transport. Fatal inhalation hazard and corrosive effects require contained handling and restricted access.
Browse related chemical intermediates in our catalog.
Methanesulfonyl Chloride Applications
Alcohol mesylation
Reagent for conversion of qualified alcohol substrates to mesylates. Establish controlled addition, dry conditions and reaction-heat management.
Sulfonamide synthesis
Sulfonylation reagent for selected sulfonamide and related intermediate routes. Qualify substrate compatibility, containment and purification.
Fine-chemical intermediates
Building reagent for technically supervised pharmaceutical and agrochemical intermediate synthesis. Assess the full reaction and waste-treatment process.
Why Source Methanesulfonyl Chloride from ZXCHEM
One-stop Chemical Sourcing
Source several chemical raw materials through one ZXCHEM contact. We coordinate product selection, quotations and suitable consolidated shipments so you can plan the order with one team.
Dedicated R&Q Laboratory
Discuss specifications, sample results and application questions with our technical team. Our dedicated R&Q laboratory supports product testing and helps clarify material selection.
Experienced Chemical Logistics
ZXCHEM has more than 30 years of experience in dangerous-goods transportation. We coordinate suitable shipments through logistics companies in which we hold equity interests in Qingdao, Shanghai, Guangzhou and Tianjin.
Dedicated Purchasing Support
Your account manager follows the order from quotation and contract signing through shipment and after-sales support. One contact coordinates technical documents, commercial details and delivery updates.
Methanesulfonyl Chloride FAQ
Which Methanesulfonyl Chloride grade should I choose?
Compare Assay >99.5% against your process requirements. Check the TDS for assay and impurity limits, then test a sample for compatibility and performance in your process.
Can I request a Methanesulfonyl Chloride sample for testing?
Request a free sample for testing. Tell us the intended Mesyl chloride application, preferred grade and the tests you plan to perform, so that we can arrange a suitable evaluation sample and technical information.
How is Methanesulfonyl Chloride packed and shipped?
Standard packing is 250 kg net PE drums, IBC or ISO tank. The usual MOQ is 1,000 kg, with a lead time of approximately 14 days from order confirmation. The reference bulk transport classification is Class 6.1 — Toxic; subsidiary risk 8.
Which documents are available for Methanesulfonyl Chloride?
The TDS covers supply specifications; the reference SDS covers safety and transport. Both can be downloaded on this page. A batch COA can be provided with supply. Request documents for the grade and physical form you are ordering.
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