Mua bán: Monoethanolamine, Ethanolamine, MEA; Petronas - Malaysia

 MONOETHANOLAMINE, ethanolamine, MEA

Trade Name ( Tên hóa chất và Viết Tắt ) : MONOETHANOLAMINE (MEA)

IUPAC name ( Danh pháp quốc tế):  2-Aminoethanol

Molecular formular, ( Công thức ) : C₂H₇NO

Other name, (SYNONYMS) ( Tên khác – tên đồng nghĩa : 2-Amino-l-Ethanol, Ethanolamine, Monoethanolamine, β-Aminoethanol, β-hydroxyethylamine, β-Aminoethyl alcohol, Glycinol, Olamine, MEA, UN 2491

HS CODE, ( mã số HS ) :  29000412

CAS No. ( mã số CAS) :  141-43-5

Purity ( Độ tinh khiết) : > 99 %

Density, (Tỉ trọng ở 20C ) :   1.012          g/cm³, liquid

Packing, ( Bao bì) :  210    kg/ new steel drum

Origin, ( Xuất xứ) : Taiwan / China / Singapore / Korea / Malaysia / USA / India /UK/ Russia / Thailand / Japan

Manufacturer, ( Nhà sản xuất) : OPTIMAL / TAT / BASF / DOW/ PETROCHEMICALS/ PETROW Chem / Shell / Exxon Mobill

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Contact: Mr. Tran Hu’ng Cuong

Tel: 0907-919-331

Email: sapa_chemicals@yahoo.com

Email: thchemicals@yahoo.com

Read more at chemical – solvent list : http://www.thchemicals.blogspot.com

Applications: Ứng dụng của ethanolamine

Monoethanolamine, MEA is used in aqueous solutions for scrubbing certain acidic gases. It is used as feedstock in the production of detergents, emulsifiers, polishes, pharmaceuticals, corrosion inhibitors, chemical intermediates. For example, reacting ethanolamine with ammonia gives the commonly used chelating agent, ethylenediamine:

In pharmaceutical formulations, Monoethanolamine, MEA is primarily used for buffering or preparation of emulsions.

Gas stream scrubbing

Aqueous solutions of Monoethanolamine, MEA (solutions of Monoethanolamine, MEA in water) are used as a gas stream scrubbing liquid in amine treaters. For example, aqueous Monoethanolamine, MEA is used to remove carbon dioxide (CO₂) from flue gas. Aqueous solutions can weakly dissolve certain kinds of gases from a mixed gas stream. The Monoethanolamine, MEA in such solutions, acting as a weak base, then neutralizes acidic compounds dissolved in the solution to turn the molecules into an ionic form, making them polar and considerably more soluble in a cold Monoethanolamine, MEA solution, and thus keeping such acidic gases dissolved in this gas-scrubbing solution. Therefore, large surface area contact with such a cold scrubbing solution in a scrubber unit can selectively remove such acidic components as hydrogen sulfide (H₂S) and CO₂ from some mixed gas streams. For example, basic solutions such as aqueous MEA or aqueous potassium carbonate can neutralize H₂S into hydrosulfide ion (HS^-) or CO₂ into bicarbonate ion (HCO₃^-).
H₂S and CO₂ are only weakly acidic gases. An aqueous solution of a strong base such as sodium hydroxide (NaOH) will not readily release these gases once they have dissolved. However, Monoethanolamine, MEA is rather weak base and will re-release H₂S or CO₂ when the scrubbing solution is heated. Therefore, the MEA scrubbing solution is recycled through a regeneration unit, which heats the Monoethanolamine, MEA solution from the scrubber unit to release these only slightly acidic gases into a purer form and returns the regenerated Monoethanolamine, MEA solution to the scrubber unit again for reuse.

pH - control amine

Monoethanolamine, Ethanolamine is often used for alkalinization of water in steam cycles of power plants, including nuclear power plants with pressurized water reactors. This alkalinization is performed to control corrosion of metal components. ETA (or sometimes a similar organic amine, e.g., morpholine) is selected because it does not accumulate in steam generators (boilers) and crevices due to its volatility, but rather distributes relatively uniformly throughout the entire steam cycle. In such application, ETA is a key ingredient of so-called "all-volatile treatment" of water (AVT).