What is CAS number 141-43-5?
2-Hydroxyethylamine (CAS 141-43-5 ), also known as ethanolamine, is an organic compound with the chemical formula C2H7NO.
| Monoethanolamine/Mea/2-Aminoethanol | |
| >=99% | |
| 141-43-5 | |
| EINECS No. | 205-483-3 |
| 10-11℃(lit.) | |
| 170℃(lit.) | |
| 1.012g/mLat 25℃(lit.) | |
| 200℃F | |
C2H7NO |
|

What is 2-aminoethanol used for?
It is a colorless liquid with a mild ammonia odour. MEA is mainly used in sweetening natural gas and coal gas, and as soap or amides in heavy-duty detergents. Monoethanolamine is also used in the production of ethylene amines.
One of the most important uses of 2-aminoethanol is in gas sweetening processes. MEA is used to absorb acidic gases such as carbon dioxide (CO₂) and hydrogen sulfide (H₂S) from natural gas, refinery streams, and flue gases in power plants.
2-Aminoethanol reacts with fatty acids to produce ethanolamides, which are widely used as:
In the agrochemical industry, 2-aminoethanol is used to neutralize acidic herbicides such as 2,4-D and glyphosate, forming ethanolamine salts.
Common in broadleaf weed control for cereals, pastures, and lawns.
Due to its alkaline nature, 2-aminoethanol is commonly applied as a pH regulator in:
- Latex paints and water-based coatings

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