Description

Tetraethylene Glycol Dimethyl Ether (CAS NO 143-24-8) is a high-purity, aprotic polar solvent and versatile chemical intermediate prized for its excellent solvating power and chemical stability. Its primary value lies in facilitating specialized chemical reactions and serving as a critical component in advanced material formulations. This product is essential for industries including pharmaceuticals, agrochemicals, battery electrolytes, and specialty polymer synthesis, where consistent quality and reliable performance are paramount.

Application

• Chemical Synthesis & Catalysis: Widely used as a solvent and phase-transfer catalyst in organic synthesis, particularly for Grignard reactions, alkylations, and polymerizations.
• Electrolyte Formulation: A key component in non-aqueous electrolytes for lithium-ion and other advanced battery systems due to its high dielectric constant and electrochemical stability.
• Gas Treatment & Separation: Employed as a physical solvent in gas scrubbing processes for the selective removal of acid gases like CO2 and H2S from natural gas streams.
• Pharmaceutical Intermediates: Serves as a reaction medium and building block in the synthesis of complex active pharmaceutical ingredients (APIs).
• Specialty Polymers & Resins: Acts as a chain extender, plasticizer, or solvent in the production of polyurethanes, epoxy resins, and other high-performance polymers.
• Agrochemical Formulations: Used as a solvent and co-formulant in pesticides and herbicides to enhance stability and efficacy.
• Laboratory Research: A valuable reagent and solvent in R&D laboratories for developing new materials and chemical processes.

Basic Information

Product Name	Tetraethylene Glycol Dimethyl Ether
CAS No.	143-24-8
Molecular Formula	C10H22O5
Molecular Weight	222.28 g/mol
Synonyms	Tetraglyme; Tetraethylene glycol dimethyl ether; Dimethyltetraglycol; 2,5,8,11,14-Pentaoxapentadecane; Bis[2-(2-methoxyethoxy)ethyl] ether; 1,2-Bis(2-(2-methoxyethoxy)ethoxy)ethane; PEG-4 dimethyl ether; TetraEGDME
EINECS	205-594-7

Quality Control

Our Tetraethylene Glycol Dimethyl Ether is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the highest standards of purity and consistency for industrial and research applications. A detailed Certificate of Analysis (COA) confirming specifications for identity, assay, and key impurities is provided with each shipment to guarantee supply reliability and product integrity.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong oxidizing agents. Recommended storage temperature is between 15°C and 25°C. The product is hygroscopic (moisture-sensitive); ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Water Content (KF)	≤ 0.05%
Acidity (as CH3COOH)	≤ 0.01%
Refractive Index (n20/D)	1.432 - 1.434
Density (20°C)	1.008 - 1.012 g/mL
Boiling Point	~ 275°C

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