Diethylene Glycol (DEG): Properties, Uses and Applications
Diethylene Glycol (DEG) is an organic compound of the glycol family with the chemical formula C4H10O3. This substance is produced as a clear, colorless liquid with medium viscosity and high hygroscopic properties and is widely used in the petrochemical industry, resin production, plasticizers, antifreezes, lubricants, industrial gases and chemicals.
DEG is one of the important products of the ethylene oxide chain and is used in many industrial processes as a solvent, intermediate and moisture absorber due to its suitable physical and chemical properties. Explore the full range of industrial chemicals at Aasad Chimie.
Diethylene Glycol at a Glance
This industrial glycol has the formula C4H10O3 and is used in the production of resins, plasticizers, antifreezes, dehumidifiers, and gas and petrochemical processes. It is an important intermediate in the chemical industry.
What Is Diethylene Glycol?
DEG is produced by the reaction of ethylene oxide with water under controlled conditions. Structurally, it has two ethylene glycol units connected to each other, which increases its boiling point and reduces its volatility compared to monoethylene glycol (MEG).
It is used as a key ingredient in various industries due to its good solvating ability, moisture absorption properties, and thermal stability. For product-specific information, visit the DEG product page.
Diethylene Glycol (DEG) Technical Specifications
| Specification | Quantity |
|---|---|
| Product Name | Diethylene Glycol (DEG) |
| Chemical Name | 2,2′-Oxydiethanol |
| CAS Number | 111-46-6 |
| Molecular Formula | C4H10O3 |
| Molecular Weight | 106.12 g/mol |
| Appearance | Clear and colorless liquid |
| Purity | 99% Min |
| Density at 20°C | 1.12 g/cm³ |
| Boiling Point | 245°C |
| Melting Point | -10.5°C |
| Flash Point | Approximately 143°C |
| Solubility in Water | Completely miscible |
For additional chemical identification and safety information, consult the PubChem chemical reference.
Key Properties
- High moisture absorption capacity (hygroscopic)
- High boiling point and low volatility
- Good chemical stability
- Compatibility with a wide range of organic compounds
- Ability to be used as an industrial solvent
- Suitable performance in selected gas and petrochemical systems
- Ability to be used in chemical product formulations
- High purity and consistent industrial quality, depending on grade
Applications
Gas and Petrochemical Industry
DEG is used in some gas processes as a moisture absorber and co-solvent. It can also play a complementary role in selected gas processing operations.
- Moisture control in industrial processes
- Support in selected gas-processing operations
- Assistance in reducing moisture-related operational problems
Production of Resins and Polymers
One important application is the production of alkyd resins, polyesters, and industrial polymers, where it can influence the mechanical and chemical properties of the final products.
Plasticizer Industry
DEG is used as a chemical intermediate in selected plasticizer and polymer-related manufacturing processes. Its suitability depends on the formulation and required product specifications.
Antifreeze and Industrial Fluids
This chemical may be used in certain industrial fluid formulations. Compatibility, performance, and safety requirements should be evaluated before selecting it for a specific application.
Paint and Ink Industries
In selected paint, printing ink, and industrial coating formulations, DEG may serve as a solvent or formulation ingredient, depending on the product requirements.
Chemical Manufacturing
It is used as an intermediate or solvent in certain chemical manufacturing processes. Its application should be assessed according to the intended end use and relevant safety requirements.
Benefits of Using DEG
- Supporting the production of resins and polymers
- Improving the stability of selected formulations
- Reducing evaporation compared with more volatile liquids
- Providing useful performance in suitable industrial processes
- Compatibility with various chemical systems
- Versatility across selected industrial applications
- Potential to improve process efficiency when appropriately selected
Comparison of DEG with MEG and TEG
| Properties | MEG | DEG | TEG |
|---|---|---|---|
| Chemical Name | Monoethylene Glycol | Diethylene Glycol | Triethylene Glycol |
| Boiling Point | Approximately 197°C | Approximately 245°C | Approximately 285°C |
| Relative Volatility | Higher | Intermediate | Lower |
| Common Applications | Antifreeze and polyester production | Chemical intermediates and selected industrial formulations | Natural gas dehydration and selected industrial processes |
| Product Page | Monoethylene Glycol (MEG) | Diethylene Glycol (DEG) | Triethylene Glycol (TEG) |
These glycols have different physical properties and application profiles. They should not be considered interchangeable without checking the technical requirements of the intended process.
Global Market
The global market is influenced by the petrochemical, resin, plastics, and chemical manufacturing industries. Demand varies according to industrial production, regional supply, feedstock availability, and logistics.
Buyers should evaluate product specifications, supplier reliability, packaging options, and technical documentation when sourcing this chemical for industrial applications.
Packaging and Storage
The product may be supplied in different packaging formats depending on supplier availability and order volume.
- 220 kg drums, subject to supplier specifications
- Intermediate bulk containers (IBCs)
- Bulk tankers for suitable industrial orders
- Store in compatible, tightly closed containers
- Protect from contamination and follow the supplier’s storage recommendations
- Follow the safety data sheet for handling, exposure prevention, and disposal
DEG can cause serious harm if swallowed. Consult the current safety data sheet and implement appropriate workplace safety procedures before handling the product. Additional chemical safety information is available from the European Chemicals Agency (ECHA) and the NIOSH chemical safety resources.
International Resources
- PubChem – Diethylene Glycol
- European Chemicals Agency (ECHA)
- NIOSH Chemical Safety Information
- ScienceDirect
Contact Aasad Chimie
For product availability and purchasing inquiries, visit the Diethylene Glycol product page, browse the complete Aasad Chimie product range, or contact the Aasad Chimie team.
What is diethylene glycol used for?
Diethylene glycol (DEG) is used in selected industrial applications, including resin manufacturing, chemical formulations, solvents, and certain industrial fluids.
What is the chemical formula of diethylene glycol?
The chemical formula of diethylene glycol is C₄H₁₀O₃. Its CAS number is 111-46-6, and its molecular weight is approximately 106.12 g/mol.
What is the difference between DEG, MEG, and TEG?
MEG, DEG, and TEG differ in molecular structure and physical properties. MEG is widely used in antifreeze and polyester production, DEG in selected chemical and resin applications, and TEG in natural gas dehydration.
Is diethylene glycol soluble in water?
Yes. Diethylene glycol is completely miscible with water, making it suitable for certain industrial solvent and formulation applications.
What is the boiling point of diethylene glycol?
The boiling point of diethylene glycol is approximately 245°C at atmospheric pressure.
How is diethylene glycol packaged?
Diethylene glycol is commonly supplied in 220 kg drums, intermediate bulk containers (IBCs), and bulk tankers, depending on supplier availability and order volume.
How should diethylene glycol be stored?
DEG should be stored in tightly closed, compatible containers under the conditions specified in the supplier's safety data sheet. Protect it from contamination and follow the recommended handling precautions.
Is diethylene glycol safe to handle?
Diethylene glycol can cause serious harm if swallowed. Appropriate personal protective equipment, safe handling procedures, and the manufacturer's safety data sheet are essential.
How can I choose the right grade of diethylene glycol?
Choose a grade based on purity, intended application, process conditions, and technical requirements. Review the supplier's technical data sheet (TDS) and safety data sheet (SDS) before purchasing.