Description

Isobutylene Sulfide CAS NO 3772-13-2 is a specialized organosulfur compound valued for its role as a versatile chemical intermediate and building block in organic synthesis. Its unique structure makes it a critical reagent for introducing sulfur-containing functional groups into more complex molecules. This product is essential for research and development laboratories and industrial-scale chemical manufacturers, particularly in the pharmaceutical, agrochemical, and polymer sectors.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, particularly those requiring sulfur-based heterocycles or thioether linkages.
• Agrochemical Synthesis: Serves as a key precursor in the production of certain herbicides, fungicides, and insecticides where the isobutylene sulfide moiety imparts specific biological activity.
• Polymer Modification: Acts as a monomer or cross-linking agent in the production of specialty polymers and elastomers, enhancing properties like oil resistance or thermal stability.
• Ligand and Catalyst Preparation: Utilized in organometallic chemistry to create sulfur-donor ligands for metal complexes used in catalysis.
• Flavor and Fragrance Industry: Employed in the synthesis of sulfur-containing aroma compounds that contribute to savory or roasted notes.
• Chemical Research: A valuable reagent for methodological development in organic synthesis, including cycloaddition reactions and the study of sulfur transfer processes.

Basic Information

Product Name	Isobutylene Sulfide
CAS No.	3772-13-2
Molecular Formula	C4H8S
Molecular Weight	88.17 g/mol
Synonyms	2-Methyl-1-propene episulfide; 2-Methylpropylene sulfide; Isobutene sulfide; 2-Methyl-2,3-epithiopropane; 2-Methylpropylene episulfide; 1,2-Epithio-2-methylpropane; Thiirane, 2,2-dimethyl-
EINECS	223-226-7

Quality Control

Our Isobutylene Sulfide is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC (Gas Chromatography) for purity and identity confirmation, to ensure it meets the stringent requirements of our industrial and research clients. A Certificate of Analysis (COA) detailing specific results for purity, water content, and other critical parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C/59-77°F). Due to its easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	0.90 - 0.95
Refractive Index (n20D)	1.480 - 1.490

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