What is DEG? Buy Diethylene glycol

• 16 March 2024
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What is DEG?

Diethylene Glycol (DEG) is a colorless, practically odorless, poisonous, and hygroscopic liquid with a sweet taste. It is a polyether compound and a member of the buyle glycol family. DEG is produced through the partial hydrolysis of ethylene oxide, which results in a mixture of glycols, including Diethylene glycol as a co-product along with ethylene glycol (EG) and triethylene glycol (TEG).

Technical Information

Chemically, DEG is represented by the formula C₄H₁₀O₃. It is classified under CAS Number 111-46-6. DEG has a molecular weight of 106.12 g/mol, boiling at 244-245°C, and a melting point that ranges from -10.45°C. Its viscosity and hygroscopic nature make it an excellent solvent and a desiccant in various applications.

DEG

Chemical and Physical Properties of Diethylene Glycol (DEG)

Diethylene Glycol (DEG) stands out in the petrochemical industry due to a unique set of chemical and physical properties. These characteristics not only define its functionality but also underpin its versatility across a multitude of applications. Here's a detailed exploration of DEG's key properties:

High Boiling Point

DEG has a notably high boiling point when compared to its glycol homologs, such as Mono Ethylene Glycol (MEG) and Triethylene Glycol (TEG). This property is measured at approximately 244-245°C. The significance of DEG's high boiling point lies in its thermal stability, which is crucial for applications that operate under high-temperature conditions. This makes DEG an ideal component in processes that require a solvent or medium that can withstand elevated temperatures without breaking down or volatilizing too quickly.

Hygroscopicity

One of the hallmark properties of DEG is its hygroscopic nature, meaning it has a strong propensity to absorb moisture from its surroundings. This characteristic is particularly beneficial in applications that demand moisture control, such as in the production of textiles, adhesives, and inks, where controlling the moisture content is essential to achieving the desired product quality. Additionally, DEG's hygroscopicity makes it an effective humectant, which is a substance used to keep things moist; it is thus used in the tobacco industry and in certain food products to retain moisture.

Solubility

DEG is highly soluble in water, alcohol, ether, acetone, and various organic solvents. This broad solubility spectrum enhances DEG's utility as a versatile solvent in the chemical industry. It can effectively dissolve a wide range of substances, making it an indispensable component in the formulation of resins, dyes, and polyurethane prepolymers. The ability to mix well with both polar and non-polar substances also allows Diethylene glycol to function as an important intermediate in the synthesis of complex chemical products.

Low Volatility

Compared to many organic compounds, DEG exhibits low volatility. This means it evaporates at a slower rate, which is a valuable property in applications where a stable, long-lasting medium is required. For instance, in the production of brake fluid, DEG's low volatility ensures that the fluid remains effective over a wide range of temperatures and does not evaporate, which could compromise braking performance. Additionally, this property is advantageous in the manufacture of films and coatings, where a gradual drying process is necessary to achieve optimal adherence and finish quality.

Additional Properties

Beyond these core properties, DEG also exhibits other notable characteristics, such as:

• Toxicity: While DEG is beneficial in industrial applications, it is toxic if ingested and can cause serious health issues. This underscores the importance of handling DEG with care and using it in contexts where exposure to living organisms is controlled or prevented.
• Compatibility: DEG's chemical structure makes it compatible with a wide range of chemical compounds, enhancing its application potential in diverse chemical reactions and formulations.

Applications of Diethylene Glycol (DEG)

The unique properties of Diethylene Glycol (DEG) such as its high boiling point, hygroscopic nature, solubility in various solvents, and low volatility make it an invaluable component across a multitude of industrial applications. DEG's versatility allows it to play critical roles in the manufacture of products ranging from resins to brake fluids. Below is a detailed overview of its primary applications.

Solvent in Manufacture of Resins, Polyurethanes, and Plasticizers

DEG is extensively used as a solvent in the chemical industry due to its ability to dissolve a wide array of substances. It facilitates the production of resins, polyurethanes, and plasticizers by dissolving raw materials, intermediates, and additives effectively. In resin production, DEG helps in achieving the desired viscosity and flow properties. For polyurethanes, it aids in the polymerization process, whereas in plasticizers, it enhances flexibility and durability of plastics.

Production of Polyester Polyols

Polyester polyols, which are a type of polymer used in the creation of polyurethane, are synthesized with the help of DEG. The reactivity of DEG with dicarboxylic acids forms polyester polyols, serving as precursors to high-performance polyurethane foams used in cushions, insulation, and several other applications. This showcases DEG’s critical role in creating materials that offer enhanced durability, resilience, and thermal insulation.

Humectant in Tobacco, Cork, Printing Ink, and Glue

Leveraging its hygroscopic property, DEG is applied as a humectant to maintain moisture in various products. In the tobacco industry, it prevents drying out, preserving flavor and quality. Cork products treated with DEG retain flexibility, reducing brittleness. In the realm of printing inks and glues, DEG aids in controlling viscosity and drying times, ensuring optimal application and performance characteristics.

Dehydration Agent for Natural Gas

DEG is employed in the dehydration of natural gas to remove water vapor, preventing the formation of hydrates that can block pipelines and reduce efficiency. Its effectiveness in absorbing water makes it a preferred choice for this application, enhancing the safety and operational efficiency of natural gas extraction and transportation systems.

Manufacture of Brake Fluid, Wallpaper Strippers, and Heating/Cooling Packs

In the automotive industry, DEG's low volatility and high boiling point make it ideal for use in brake fluids, ensuring reliable performance over a wide temperature range. Wallpaper strippers containing DEG efficiently soften adhesive for easier removal, minimizing effort and improving effectiveness. Additionally, its thermal properties are exploited in heating and cooling packs, where DEG-based solutions can store or release heat over an extended period.

History of DEG

The production and use of DEG date back to the early 20th century, coinciding with the development of the petrochemical industry. Its applications have evolved over time, from an initial focus on antifreeze solutions to its widespread use in a variety of industrial processes and products.

Risks and Benefits of DEG

While DEG is invaluable in industrial applications, it poses significant health risks if ingested, inhaled, or in contact with skin, leading to potential organ damage or even death. However, its benefits in industrial applications, such as its role in the manufacture of resins and as a desiccant, underscore its importance in the petrochemical sector. Proper handling and safety measures are paramount to mitigate its risks.

Diethylene Glycol Storage Conditions

To maintain DEG's integrity and minimize risks, it should be stored in a cool, well-ventilated area away from heat sources and direct sunlight. Storage containers should be tightly sealed to prevent contamination and absorption of moisture from the air.

Buy Diethylene Glycol

Purchasing Diethylene Glycol requires consideration of the supplier's reliability, product quality, and compliance with safety regulations. It is available from chemical suppliers and manufacturers, with options for bulk or tailored quantities. Always ensure the supplier provides product data sheets and safe handling guidelines.

In conclusion, Diethylene Glycol is a versatile petrochemical compound with a wide array of industrial applications. Its technical, chemical, and physical properties make it invaluable in numerous sectors. However, the benefits of DEG come with significant health and safety risks that necessitate careful handling and storage. As the chemical industry continues to evolve, the role of DEG in new technologies and applications is likely to expand, further highlighting the importance of this compound in the global petrochemical landscape.