Overview
Dimethylethanolamine (DMAE) is an organic compound classified as a tertiary amine and alcohol. It is produced industrially via the reaction of ethylene oxide with dimethylamine. The compound has been studied since the early 20th century, with commercial production scaling up in the 1950s. DMAE serves as a versatile intermediate in specialty chemical manufacturing. Its bifunctional nature (amine and hydroxyl groups) enables diverse chemical modifications, making it valuable for synthesizing quaternary ammonium compounds, pharmaceuticals, and corrosion inhibitors.
Physical and Chemical Properties
DMAE is a colorless to slightly yellow liquid with a characteristic amine odor. It exhibits excellent solubility in both water and organic solvents like ethanol or acetone, facilitating its use in various formulations. The compound is hygroscopic and should be protected from moisture absorption during storage. Chemically, DMAE acts as a weak base (pKa ~9.2) and can form salts with acids. Its reactivity includes esterification of the hydroxyl group and quaternization of the tertiary amine. The compound is stable under normal conditions but may decompose at high temperatures (>200°C), releasing toxic fumes.
Main Applications
In pharmaceuticals, DMAE is used to synthesize local anesthetics like procaine and as a precursor for drugs targeting cognitive functions. The water treatment industry utilizes DMAE-based quaternary ammonium compounds as biocides and corrosion inhibitors, particularly in cooling systems. The coatings industry employs DMAE as a pH adjuster and catalyst in waterborne systems. Additionally, it serves as an intermediate for surfactants and emulsifiers in personal care products. Emerging applications include gas treatment (CO2 absorption) and electroplating additives.
Safety and Storage
DMAE requires careful handling due to its irritant properties. Skin contact may cause irritation or allergic reactions, while eye exposure can lead to severe irritation. Always use chemical-resistant gloves, goggles, and proper ventilation when handling. Store in stainless steel or polyethylene containers away from strong oxidizers. Ideal storage conditions include temperatures below 30°C in tightly sealed containers. Bulk storage tanks should have nitrogen blanketing to prevent moisture absorption and oxidation. Follow local regulations for amine-containing compound storage.
B2B Procurement Guide
Industrial buyers should specify purity requirements based on application: ≥99% for pharmaceutical use, ≥98% for technical grades. Verify supplier quality control documentation including GC analysis reports. Consider logistical factors: ISO tanks for bulk shipments (>5 tons), sealed drums (200kg) for smaller quantities. Evaluate supplier capabilities for just-in-time delivery and regional stock availability. Technical support for formulation guidance may be valuable for specialty applications. Compare prices from at least three qualified suppliers annually.
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