Overview
Tetraethylammonium (TEA) is a quaternary ammonium cation consisting of a central nitrogen atom bonded to four ethyl groups. It was first synthesized in the late 19th century and has since become an important compound in both laboratory and industrial settings. TEA is primarily used as a research chemical in biological studies, particularly in neuroscience where it serves as a potassium channel blocker. Its ability to interfere with ion channels makes it valuable for studying neuronal activity and membrane physiology.
Physical and Chemical Properties
Tetraethylammonium typically appears as a white crystalline solid that is highly soluble in water and polar organic solvents. The compound is hygroscopic, meaning it readily absorbs moisture from the air, which requires careful handling and storage. Chemically, TEA forms stable salts with various anions such as chloride, bromide, and hydroxide. These salts often have different physical properties and applications. The compound is relatively stable under normal conditions but decomposes at high temperatures.
Main Applications
In pharmaceutical research, TEA is used as a tool compound to study ion channel function and nerve conduction. Its ability to block potassium channels helps researchers understand various neurological processes and potential drug targets. Industrially, TEA serves as a phase-transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases. It's also used in some electrochemical applications and as a component in certain specialty chemicals.
Safety and Storage
Tetraethylammonium compounds should be handled with appropriate personal protective equipment including gloves, goggles, and lab coats. The substance can cause irritation to skin, eyes, and respiratory system upon contact. For storage, keep containers tightly sealed in a cool, dry place away from moisture and incompatible substances. The compound should be stored separately from strong oxidizers and acids. Proper labeling and secondary containment are recommended to prevent accidental exposure.
B2B Procurement Guide
When sourcing tetraethylammonium compounds, specify the required salt form (e.g., chloride, bromide) and purity grade. Technical grade is sufficient for industrial applications, while reagent or pharmaceutical grades are needed for research purposes. Request certificates of analysis (CoA) to verify purity and specifications. Consider suppliers with GMP certification for pharmaceutical applications. Bulk quantities typically offer better pricing, but evaluate storage requirements before purchasing large amounts.
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