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Tetraethylammonium Bromide shows up in labs as a solid salt, white in appearance, with a formula of C8H20BrN and a molar mass of 226.16 g/mol. Researchers and industrial chemists lean on it for its role as a phase-transfer catalyst and as an ionic compound in organic syntheses. Over time, use cases have spread into pharmaceuticals, electrochemistry, protein chemistry, and even plant biology. You can spot this compound labeled under the HS Code 2923900090, placing it among other organic nitrogen compounds for shipping and regulatory purposes. In almost every chemical supply catalog, it lands with a clear list of properties, leaving few surprises for anyone interested in its behavior during synthesis or analysis.
Suppliers package Tetraethylammonium Bromide as free-flowing crystalline flakes, compacted pearls, and dense powders, rarely—if ever—as a liquid. The solid has a melting point of about 295 °C, showing strong ionic interactions, and a specific gravity hovering near 1.33 g/cm³ at room temperature. Its appearance usually stays consistent: odorless, colorless to white crystals, easy to spot among other laboratory reagents. Bulk containers or smaller glass jars preserve the hydroscopic nature of the salt, because prolonged exposure to air brings about gradual clumping as it draws in moisture. Several labs prefer this compound for preparing precisely measured solutions, due to its clean dissolution profile in water and polar organic solvents.
The molecular structure features a central nitrogen atom bonded to four ethyl groups, balanced by a single bromide ion. This quaternary ammonium structure resists easy breakdown, which matters in both synthesis and in the stability of buffer solutions. In reactions, the compound stands out for its capacity to disrupt ion-pairing and to increase solubility of organic substrates in water, helping bridge the gap between nonpolar precursors and aqueous reaction mediums. Analytical chemists leverage this property whenever they need a stable, well-behaved salt for titration or for preparing calibration standards. Density, crystallinity, and reliable solubility build trust among frequent users in both research and manufacturing.
Pharmaceutical production lines use Tetraethylammonium Bromide when crafting complex organic molecules, especially where pure reaction outcomes matter. In electrophysiology, it blocks specific potassium channels, allowing scientists to unravel the workings of nerve impulses. Biochemists add it to protein crystallization experiments, exploiting its ionic strength and compatibility with buffers. The electrochemical sector uses the compound to tune ionic strength in electrolytes for batteries and sensors. Academic researchers appreciate access to technical-grade and analytical-grade options, since contaminants can alter experimental outcomes. I’ve watched lab teams rely on its consistency, praising the easy dissolution and lack of color interference—each batch predictably similar to the next, sparing researchers the hassles seen with less pure compounds.
Handling Tetraethylammonium Bromide calls for attention to safety, since it poses some risks if mishandled. Skin and eye contact can irritate, and inhalation or ingestion may bring health effects; gloves, goggles, and lab coats should stay the norm. Dust formation increases accidental inhalation risk, so weighing and transferring should take place in a fume hood or well-ventilated space. Material Safety Data Sheets categorize it under hazardous laboratory chemicals, not because of acute toxicity but due to chronic exposure risks and possible effects on nervous systems seen in high-dose animal models. After working with the salt, users wash their hands thoroughly and segregate waste in chemical collection stations. Regulatory notes flag this compound under various lists for proper labeling and disposal. Environmental fate relates to water solubility: the compound disperses easily, implying a potential hazard to aquatic life if released without treatment. In our lab, chemical spill kits and secondary containment trays sit near high-use stations as a routine safeguard, reflecting an approach grounded in good chemical hygiene rather than fear.
Production of Tetraethylammonium Bromide starts with ready access to triethylamine, ethyl bromide, and basic acid scavengers, with most manufacturers clustering near major chemical parks, especially across the US, Europe, and East Asia. Consistent purity standards and robust supply systems keep costs stable for end users. Most research suppliers offer certificates of analysis with each batch, detailing purity (usually above 98%) and residual solvents, since small differences in starting materials can shift experimental outcomes. I’ve seen researchers switch suppliers to avoid unexpected impurities—solvent residues or color hints tipping them off to changes in the process. Some industrial buyers coordinate direct, bulk shipments to avoid shortages and to maintain tight control on inventory, a move that pays off in reducing downtime when high-throughput synthesis schedules loom.
Workplace safety improves with regular staff training, as even experienced chemists benefit from up-to-date procedures for handling Tetraethylammonium Bromide and related inorganic salts. Safe storage in sealed containers with desiccant packs reduces moisture uptake. Spills should be cleaned immediately with dampened cloth or absorbent pad rather than sweeping dry powder into the air. For disposal, dilute solutions can pass through neutralization and treatment protocols before entering waste streams; solids end up designated for hazardous waste incineration, never for regular trash disposal. In laboratory or pilot plant settings, clear labeling and chemical inventory audits help cut down on loss, expired stock, and accidental mixing. Emphasis on emergency eyewash stations, secure glove disposal, and regular inspection of chemical fume hoods keeps workplaces safer and aligns with best practices in chemical management.
Tetraethylammonium Bromide holds its place as a reliable, well-characterized chemical, blessed with high solubility in water, robust thermal properties, and stable crystalline form. Molecular formula C8H20BrN, density close to 1.33 g/cm³, appearance as solid crystals, and specific HS Code for import-export labeling come standard. Multiple grades and package types—powder, flakes, pearls—serve diverse users across chemical synthesis, biology, and electrochemistry. Proper safety protocols and storage conditions ensure both user safety and compound longevity. Its continued use across laboratory, manufacturing, and research fields highlights robust supply chains, a proven track record, and a manageable risk profile when following established handling guidelines.
