1. What Is Diethanolamine?

Diethanolamine (DEA) is an organic chemical compound belonging to the ethanolamine family. It contains both amine and hydroxyl functional groups, making it useful in a wide range of industrial applications.

Diethanolamine is commonly used in the manufacture of surfactants, detergents, lubricants, metalworking fluids, and other chemical products. It also serves as an intermediate in various chemical synthesis processes.

Due to its versatile chemical properties, diethanolamine is an important raw material in several industrial sectors.

2. Basic Information

• Product Name: Diethanolamine

• Abbreviation: DEA

• CAS No.: 111-42-2

• Molecular Formula: C₄H₁₁NO₂

• Molecular Weight: 105.14 g/mol

• Chemical Name: 2,2'-Iminodiethanol

• EC No.: 203-868-0

3. Physical and Chemical Properties

Diethanolamine is typically a colorless, viscous liquid above its melting point and may appear as white or colorless crystals at lower temperatures. It has a mild ammonia-like odor and is hygroscopic, meaning it can absorb moisture from the air.

Key properties include:

• Appearance: Colorless viscous liquid or white crystals

• Melting Point: Approximately 28°C

• Boiling Point: Approximately 268.8°C

• Density: Approximately 1.0966 g/cm³ at 20°C

• Solubility: Very soluble in water and ethanol

These properties make diethanolamine suitable for applications requiring water solubility and chemical functionality. Actual specifications may vary depending on product grade and supplier.

4. Main Applications of Diethanolamine

4.1 Detergents and Surfactants

Diethanolamine is used in the production of surfactants and detergent-related chemicals. It can serve as a chemical intermediate in formulations designed for cleaning, emulsification, and related industrial applications.

4.2 Metalworking Fluids and Lubricants

DEA is used in certain metalworking fluids, cutting oils, and lubricant formulations. Depending on the formulation, it can contribute to emulsification, buffering, and other functional properties.

4.3 Gas Treatment

Diethanolamine can be used in gas-treatment processes to remove acidic components from gas streams. Its suitability depends on the gas composition, process conditions, and specific system requirements.

4.4 Chemical Manufacturing

As a chemical intermediate, diethanolamine is used in the production of various industrial chemicals, including selected surfactants, specialty formulations, and other chemical derivatives.

4.5 Other Industrial Applications

Additional applications include certain agricultural chemical formulations, textile-related products, cleaners, and specialty industrial products. The appropriate grade and formulation depend on the intended application.

5. Storage and Handling

Diethanolamine should be handled in accordance with the supplier’s Safety Data Sheet (SDS) and applicable workplace safety requirements.

• Store in tightly closed, compatible containers in a cool, dry, well-ventilated area.

• Protect the product from contamination and excessive moisture.

• Use suitable protective gloves, eye protection, and other required personal protective equipment.

• Avoid contact with incompatible substances, including strong oxidizing agents and certain reactive chemicals.

• Prevent uncontrolled releases into the environment.

Before use, review the product-specific SDS for detailed information on hazards, first aid, spill response, and storage compatibility.

6. Conclusion

Diethanolamine (DEA), CAS No. 111-42-2, is a versatile industrial chemical used in surfactants, detergents, metalworking fluids, gas treatment, and chemical manufacturing.

Understanding its basic properties, applications, and handling requirements helps buyers select the appropriate product for their intended use.

For industrial purchasing, buyers should confirm product specifications, purity, packaging, and application requirements with their chemical supplier before placing an order.