Product Overview

Diethylene glycol dimethyl ether, widely known as diglyme, is an acyclic glycol ether supplied as a colorless clear liquid with a mild ether-like odor. It is a high boiling polar aprotic solvent that is fully miscible with water as well as with alcohols, ethers and hydrocarbon solvents, which makes it valuable both as a reaction medium and as a formulation solvent. Main application fields include battery electrolyte systems, organic and pharmaceutical synthesis, polymer and resin processing, adhesives, inks and extraction operations.

Key Attributes

Key Highlights

• HIGH PURITY: Assay of 99.0% minimum determined by gas chromatography, with an anhydrous grade available for moisture-sensitive processes.
• HIGH BOILING SOLVENT: Boils at 162 C, allowing reactions and coating processes to run at elevated temperature while the solvent stays in the liquid phase.
• STRONG SOLVATION POWER: Polar aprotic character combined with full miscibility in water and organic media lets it dissolve a broad range of resins, polymers and organometallic compounds.
• BATTERY GRADE APPLICATION: Established as an electrolyte solvent and co-solvent in lithium-ion, sodium-ion and lithium-air cell development, where its low volatility supports stable cycling.
• STABLE REACTION MEDIUM: Chemically inert under normal processing conditions, suitable as an anhydrous medium for alkylation, condensation and metal-organic synthesis.
• FLEXIBLE PACKAGING: Offered in 200 kg steel drums, 950 kg IBC tanks and ISO tanks for bulk volume, plus 1 kg to 25 kg laboratory packs.
• RELIABLE SUPPLY: Minimum order quantity of 1 metric ton, shipment within 3 weeks after order confirmation, delivered by sea to customers in global markets.
• FULL DOCUMENTATION: Certificate of analysis and technical documentation are provided with each shipment to support your incoming quality control.

Product Description

Diethylene glycol dimethyl ether (CAS 111-96-6), also referred to in the industry as diglyme or bis(2-methoxyethyl) ether, is a linear glycol ether built from two methoxy-terminated ethylene units. Dideu Group supplies this product as a colorless clear liquid with a purity of 99.0% minimum by gas chromatography, and an anhydrous grade can be arranged for customers running moisture-sensitive chemistry.

The value of this solvent lies in the combination of three properties. Its boiling point of 162 C is far above that of common ethers, so it remains in the pot during prolonged heating and reflux without excessive evaporative loss. Its polar aprotic nature gives it good cation solvating ability, which is the reason it is used as an electrolyte medium in alkali-metal battery systems and as a reaction medium for organometallic transformations. At the same time it is fully miscible with water, alcohols, ethers and hydrocarbon solvents, and it dissolves vinyl chloride copolymers, post-chlorinated polyvinyl chloride, polymethacrylate, polystyrene, polychloroprene and cellulose acetate, which makes it practical as a resin and coating solvent. With a density of 0.945 g/cm3 and a viscosity of 1.089 cP at 20 C, it pumps and meters easily in standard plant equipment.

Dideu Group handles this product from laboratory quantities up to full ISO tank loads. The minimum order quantity is 1 metric ton, goods are ready for shipment within 3 weeks after order confirmation, and delivery is arranged by sea to customers in global markets. Each consignment is shipped with a certificate of analysis and the corresponding technical documentation.

Applications

Batteries and Energy Storage

Used as an electrolyte solvent and co-solvent for lithium-ion, sodium-ion and lithium-air cell systems. Its low volatility and strong solvating ability toward alkali-metal salts support stable interphase formation and reversible cycling, which has made it a standard medium in both research cells and specialty battery formulations.

Organic Synthesis and Pharmaceuticals

Serves as a high boiling anhydrous reaction medium for alkylation, condensation and metal-organic synthesis. It is selected in active pharmaceutical ingredient process chemistry where a polar aprotic solvent with a wide liquid range is required and where the solvent must be removable by distillation under reduced pressure.

Polymers, Resins and Coatings

Dissolves vinyl chloride copolymers, post-chlorinated polyvinyl chloride, polymethacrylate, polystyrene, polychloroprene and cellulose acetate. It functions as a solvent and diluent in resin solutions, coating formulations and surface finishing systems where slow evaporation improves film leveling.

Adhesives, Inks and Sealants

Applied as a high boiling solvent and diluent in adhesive, printing ink and sealant formulations, helping to control open time, viscosity and film formation.

Extraction and Separation Processes

Used as a raw material in the preparation of extraction agents and diluents, and as an entrainer in separation operations that benefit from its miscibility profile and boiling point.

Laboratory and Research Use

Supplied in 1 kg to 25 kg laboratory packs for analytical work, synthesis screening and electrochemical studies, including solvation and transport investigations of lithium and sodium salts.

Other Applications

Also used as a process solvent in electronics manufacturing operations such as cleaning and surface treatment, and as a reaction medium in the preparation of organometallic compounds and specialty chemical intermediates.

Specifications

Packaging and Shipping

Storage Recommendations

• Store in a cool, dry and well-ventilated place.
• Keep the container tightly closed when not in use.
• Protect from moisture and direct sunlight.
• Keep away from heat sources.

Shipping: Goods are delivered by sea. Lead time: Shipment is arranged within 3 weeks after order confirmation. Minimum order quantity: 1 metric ton.

Company Profile

Dideu Group is a professional supplier of fine chemicals and specialty chemicals, serving customers in global markets with a full range of products from lab-scale reagents to industrial quantities. Our portfolio covers organic solvents, pharmaceutical and agrochemical intermediates, inorganic salts and specialty additives for coatings, polymers, adhesives and energy storage industries. We work with established production partners and maintain strict incoming inspection before every shipment, so that each consignment leaves our warehouse with a certificate of analysis and complete technical documentation. Our team supports customers through the whole order cycle, from technical clarification and packaging selection to documentation and logistics coordination. Long-term and stable supply, consistent quality and responsive communication are the foundation of how we build partnerships with customers worldwide.

FAQ

1. What is the minimum order quantity?

The minimum order quantity is 1 metric ton for industrial supply. Smaller laboratory packs from 1 kg can be discussed according to your required quantity, please contact us for details.

2. What is the lead time?

Dideu Group arranges shipment within 3 weeks after order confirmation. For regular repeat orders we keep closer coordination with the production side to shorten the waiting time.

3. What packaging options do you offer?

We offer 200 kg steel drums, 950 kg IBC tanks and ISO tanks for bulk volume, as well as 1 kg, 5 kg and 25 kg laboratory packs. Packaging can be discussed according to your handling and storage conditions.

4. What payment terms do you accept?

We accept T/T and L/C. Specific terms can be arranged according to the order size and the cooperation history between both parties.

5. Do you provide COA and technical documents?

Yes. A certificate of analysis is issued for every batch, and technical documentation is provided with each shipment to support your incoming quality control and registration work.

6. How do you ship the goods?

Goods are shipped by sea, in drums, IBC tanks or ISO tanks depending on the quantity ordered. Dideu Group coordinates booking and documentation and keeps you informed of the shipment status.