Description

4,4,5,5-Tetramethyl-1,3,2-Dioxathiolane 2-Oxide is a high-purity cyclic sulfite ester, a versatile chemical intermediate and reagent. This compound is valued for its unique reactivity, particularly in organic synthesis and as a precursor for specialty materials. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors seeking to develop novel compounds or enhance synthetic pathways.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and complex organic molecules.
• Chemical Reagent: Serves as a specialized reagent in organic synthesis, including oxidation and sulfonation reactions.
• Agrochemical Synthesis: A key building block in the production of advanced pesticides and herbicides.
• Polymer & Material Science: Employed as a monomer or additive in the development of specialty polymers and functional materials.
• Laboratory Research: A valuable tool for academic and industrial R&D in synthetic chemistry.
• Electrolyte Additive: Investigated for use in lithium-ion battery electrolytes to improve performance and stability.

Basic Information

Product Name	4,4,5,5-Tetramethyl-1,3,2-Dioxathiolane 2-Oxide
CAS No.	19424-26-1
Molecular Formula	C6H12O3S
Molecular Weight	164.22 g/mol
Synonyms	2,2,3,3-Tetramethyl-1,4,2,3-dioxathiolane 4-Oxide; Tetramethyl Ethylene Sulfite; TMES; 1,3,2-Dioxathiolane, 4,4,5,5-tetramethyl-, 2-oxide; Ethylene Sulfite, Tetramethyl-; Tetramethyl-1,3,2-dioxathiolane 2-oxide
EINECS	243-089-7

Quality Control

Our 4,4,5,5-Tetramethyl-1,3,2-Dioxathiolane 2-Oxide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to guarantee compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	Contact for details
Density (g/mL, 20°C)	Contact for details

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