About Diethanolamine (for synthesis)
Diethanolamine, often abbreviated as DEA or DEOA, is an organic compound with the formula HN(CH2CH2OH)2. Pure diethanolamine is a white solid at room temperature, but its tendencies to absorb water and to supercool[2] mean it is often encountered as a colorless, viscous liquid.
Diethanolamine Technical Details:
IUPAC name : 2,2'-aminodiethanol
Other names : Bis(hydroxyethyl)amine ; N,N-Bis(2-hydroxyethyl)amine ; 2,2'-Dihydroxydiethylamine ; ,'-Dihydroxydiethylamine ; Diolamine ; 2-[(2-Hydroxyethyl)amino]ethanol ; 2,2'-Iminobisethanol ; Iminodiethanol ; Di(2-hydroxyethyl)amine ; bis(2-Hydroxyethyl)amine ; 2,2'-Iminodiethanol
CAS Number : 111-42-2
Chemical formula : C4H11NO2
Molar mass : 105.137 gmol1
Appearance : Colourless crystals
Odor : Ammonia odor
Density : 1.097 gmL1
Melting point : 28.00 C; 82.40 F; 301.15 K
Boiling point : 271.1 C; 519.9 F; 544.2 K
Solubility in water : Miscible
log P : -1.761
Vapor pressure : <1 Pa (at 20 C)
UV-vis (max) : 260 nm
Refractive index (nD) : 1.477
Versatile Applications in Laboratory SynthesisDiethanolamine (DEA) is prized for its impressive solubility and consistent high purity, making it a cornerstone reagent in research and development environments. It is commonly used for the preparation of surfactants, corrosion inhibitors, and various organic synthesis processes, supporting both academic experiments and industrial scale-up.
Safe Handling and Practical StorageDue to its corrosive properties (Hazard Class 8), Diethanolamine for synthesis must be handled with appropriate personal protective equipment and stored in bottles tightly sealed in dry, well-ventilated areas. This safeguards both the product's quality and user safety, ensuring DEA's effectiveness throughout its 36-month shelf life.
FAQ's of Diethanolamine (for synthesis):
Q: How should Diethanolamine (for synthesis) be stored for best results?
A: Diethanolamine must be stored in tightly closed bottles kept in a dry, well-ventilated area, away from moisture and incompatible substances. Proper storage prevents degradation and ensures its high purity is maintained throughout its 36-month shelf life.
Q: What are the main laboratory uses of Diethanolamine for synthesis?
A: Primarily, Diethanolamine is used in organic synthesis, analytical research, and as a precursor for surfactants, corrosion inhibitors, and buffer solutions. Its reliable solubility and stable chemical characteristics make it indispensable in university and industrial laboratories.
Q: When is it necessary to take special precautions while handling this chemical?
A: Always adopt special precautions when handling Diethanolamine due to its classification as a corrosive substance (Hazard Class 8). Use gloves, safety goggles, and protective clothing to prevent skin or eye contact, and ensure the workspace is well-ventilated.
Q: Where can Diethanolamine (for synthesis) be purchased in India?
A: Diethanolamine of synthesis grade is available through authorized dealers, exporters, manufacturers, retailers, suppliers, and traders across India. Ensure you source from reputable chemical suppliers to guarantee product purity and quality.
Q: What is the process of preparing a 1% solution of Diethanolamine, and why is pH significant?
A: To prepare a 1% solution, dilute Diethanolamine in distilled water to achieve the required concentration. The resulting solution exhibits a pH of around 11, indicating its alkaline nature, which is crucial for reactions sensitive to pH or when used as a buffer agent.
Q: How does the hygroscopic nature of Diethanolamine affect its usage?
A: Being hygroscopic, Diethanolamine readily absorbs moisture from the air, which can alter its concentration and purity. Therefore, it's vital to keep the container tightly closed and minimize exposure to atmospheric humidity during use.
Q: What benefit does Diethanolamine offer for synthesis over other similar amines?
A: Diethanolamine provides outstanding solubility, high purity (99%), and a suitable boiling point, which make it ideal for controlled laboratory synthesis. Its clear form and consistent quality contribute to reliable and reproducible experimental results.