Introduction
Diethanolamine, also known as DEA, is an organic compound with the chemical formula C4H11NO2
Molecular formula
C4H11NO2
CAS NO.
111 - 42 - 2
Packing
220kg,Bulk
Physical Properties
| Appearance | It is a colorless to light yellow viscous liquid. |
| Odor | It has a mild, ammonia - like odor. |
| Melting Point | 28 °C |
| Boiling Point | 269.1 °C |
| Density | 1.097 g/cm³ at 25 °C |
| Solubility | It is miscible with water, ethanol, and chloroform, but immiscible with ether and benzene. |
Chemical Properties
Diethanolamine is a secondary amine, which means it has a nitrogen atom bonded to two ethyl alcohol groups.
It is a weak base and can react with acids to form salts. For example, it reacts with hydrochloric acid to form diethanolammonium chloride.
It can also undergo esterification reactions with carboxylic acids to form esters.
Uses
Surfactant Synthesis
It is widely used in the production of surfactants, such as detergents, shampoos, and emulsifiers. The amine group can react with fatty acids to form amphoteric surfactants, which have good cleaning and foaming properties.
Gas Treatment
Diethanolamine is used in the petroleum and natural gas industry to remove acidic gases such as carbon dioxide (CO2) and hydrogen sulfide (H2S) from gas streams. It forms reversible complexes with these acidic gases, allowing for their separation and purification.
Pharmaceutical Industry
It is used as an intermediate in the synthesis of some drugs and as a pH - adjuster in pharmaceutical formulations.
Cosmetics
In cosmetics, it is used to adjust the pH of products and as a stabilizer. It can help to improve the texture and stability of creams, lotions, and other skincare products.
Textile Industry
It is used in textile processing as a softening agent and to improve the dye - uptake of fabrics.
Safety Considerations
Diethanolamine is a corrosive substance and can cause severe skin and eye irritation. Direct contact with the skin should be avoided, and appropriate personal protective equipment, such as gloves and safety glasses, should be worn when handling it.
Inhalation of its vapors may cause respiratory irritation. It is important to ensure proper ventilation in areas where diethanolamine is used or stored.
It is also considered a potential environmental pollutant. Disposal of diethanolamine - containing waste should be carried out in accordance with relevant environmental regulations to prevent contamination of soil and water.
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