Description

Ethylmethylsulphoxide (CAS NO 1669-98-3) is a versatile organosulfur compound valued for its unique solvent properties and role as a chemical intermediate. Its structure offers a balance of polarity and reactivity, making it a critical component in advanced synthesis and formulation processes. This chemical is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking high-purity intermediates for complex reactions.

Application

Ethylmethylsulphoxide serves as a key building block and solvent in various high-value industrial and research applications.

• Pharmaceutical Intermediate: Utilized in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Agrochemical Synthesis: Acts as a precursor or solvent in the production of herbicides, fungicides, and plant growth regulators.
• Specialty Solvent: Employed in chemical reactions where its specific polarity and solvating power are advantageous, particularly for polar substrates.
• Chemical Research & Development: Used in laboratory settings for method development, catalysis studies, and exploring novel synthetic pathways.
• Polymer Chemistry: Can function as a reaction medium or additive in the synthesis and modification of specialty polymers.
• Electrolyte Formulation: Investigated for use in advanced battery systems and electrochemical applications due to its electrochemical stability.

Basic Information

Product Name	Ethylmethylsulphoxide
CAS No.	1669-98-3
Molecular Formula	C₃H₈OS
Molecular Weight	92.16 g/mol
Synonyms	Ethyl Methyl Sulfoxide; Methyl Ethyl Sulfoxide; 1-Ethyl-1-methylsulfinylmethane; Ethyl(methyl)sulfane oxide; EMSO; 1669-98-3; Ethyl methyl sulphoxide
EINECS	Contact for details

Quality Control

Our Ethylmethylsulphoxide is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.450 - 1.455
Density (g/mL, 20°C)	1.05 - 1.10

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