Description

Ethyl Methyl Sulphite is a specialized organosulfur compound used as a versatile reagent and intermediate in advanced chemical synthesis. Its value lies in its unique reactivity profile, making it a key building block for introducing sulphite and related functional groups into target molecules. This product is essential for research and development laboratories, as well as production facilities in the pharmaceutical, agrochemical, and specialty chemical industries, where precise molecular construction is critical.

Application

• As a key sulfonation and sulfation reagent in organic synthesis.
• Intermediate in the production of pharmaceutical active ingredients (APIs) and fine chemicals.
• Building block for agrochemicals such as herbicides and fungicides.
• Used in polymer chemistry for modification and cross-linking reactions.
• Reagent in research and development for novel compound libraries.
• Potential application as a stabilizer or additive in specialty formulations.

Basic Information

Product Name	Ethyl Methyl Sulphite
CAS No.	10315-59-0
Molecular Formula	C3H8O3S
Molecular Weight	124.16 g/mol
Synonyms	Ethyl methyl sulfite; Methyl ethyl sulfite; Sulfurous acid, ethyl methyl ester; Ethylmethylsulfit; 1-Ethoxy-1-methoxysulfane; 1-Methoxy-1-ethoxysulfane; EMS (abbreviation); Ethyl methyl ester of sulfurous acid
EINECS	233-692-4

Quality Control

Our Ethyl Methyl Sulphite is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Recommended storage temperature is 2-8°C for extended stability. This compound is moisture-sensitive (hygroscopic) and should be handled under an inert atmosphere to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Impurities (GC)	≤ 1.0% (total)

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