1. Product Introduction & Main Application
Arnico’s Ethanolamines, including Monoethanolamine (MEA), Diethanolamine (DEA), and Triethanolamine (TEA), are clear, viscous liquids with a mild ammoniacal odor, produced from the reaction of ethylene oxide with ammonia. This versatile chemical family is used as an absorbent for acid gases (CO₂ and H₂S) in natural gas sweetening, as an emulsifier in detergents and cement, and as a primary intermediate in the production of herbicides and industrial cleaners.
2. Technical Specifications
| Technical Parameter | Monoethanolamine (MEA 99%) | Diethanolamine (DEA 99%) | Triethanolamine (TEA 99%) | Unit |
|---|---|---|---|---|
| Purity | ≥ 99.5 | ≥ 99.0 | ≥ 99.0 (or 85%) | % |
| Water | ≤ 0.3 | ≤ 0.2 | ≤ 0.2 | % |
| Color (APHA) | ≤ 15 | ≤ 20 | ≤ 50 | Pt-Co |
| Density (20°C) | 1.016 – 1.019 | 1.090 – 1.095 | 1.122 – 1.127 | g/cm³ |
| Boiling Point (at 760 mmHg) | 170 – 172 | 268 – 270 (Decomposes) | 335 – 360 | °C |
| Amine Value | – | – | 630 – 650 | mg KOH/g |
3. Features & Benefits
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Selective Acid Gas Absorption (MEA): The gold standard for removing CO₂ and H₂S from natural gas, with a high reaction rate and excellent absorption capacity.
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Powerful Emulsifier & Dispersant (DEA/TEA): Creates stable emulsions in detergents, soluble oils, and personal care products.
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pH Regulator & Mild Base (TEA): Controls acidity in cosmetic creams and neutralizes fatty acids without causing skin damage.
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Versatile Raw Material: The dual amine and alcohol structure allows for reactivity with acids, aldehydes, and epoxides.
4. Industrial Applications
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Refineries & Petrochemicals: A solvent in amine gas sweetening units.
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Detergent & Personal Care Industry: A builder for amphoteric surfactants and a thickener for shampoos and liquid soaps.
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Agriculture: A raw material in the production of glyphosate herbicide and other pesticides.
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Cement & Concrete: A grinding aid and an enhancer for the early strength of cement.
5. Safety & Handling
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MSDS (Material Safety Data Sheet): These substances are alkaline, corrosive, and irritants to the skin and eyes. MEA is more toxic. The Arnico MSDS file must be obtained.
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Storage Conditions: Store in 316 stainless steel or carbon steel tanks, sealed, away from moisture and atmospheric CO₂. They slowly absorb CO₂.
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Personal Protective Equipment (PPE): The use of neoprene gloves, chemical goggles, and a respirator is mandatory when working with the heated product.
6. Quality Assurance & COA
Arnico Ethanolamine shipments are accompanied by a Certificate of Analysis (COA) with a precise GC analysis.
