Tetraethylammonium bromideCAS71-91-0

 Usage

1. Phase transfer catalyst - Tetraethylammonium bromide is a commonly used phase transfer catalyst in organic synthesis reactions. For example, in the reaction between halogenated hydrocarbons and nucleophilic reagents, it can promote the reaction. In alkylation reactions, when halogenated alkanes react with compounds containing active hydrogen (such as phenols, alcohols, carboxylic acids, etc.), tetraethylammonium bromide can make the reaction occur under mild conditions. Because it can help nucleophilic reagents transfer from the aqueous phase to the organic phase, making the reaction proceed smoothly in the organic phase. For example, in the alkylation reaction of phenylacetonitrile with halogenated alkanes, tetraethylammonium bromide can effectively increase the reaction yield.

2. Ion pair chromatography reagent - Tetraethylammonium bromide plays an important role as an ion pair reagent in ion pair chromatography. It can form ion pairs with analytes with opposite charges, thereby changing the retention behavior of analytes. When analyzing compounds such as organic bases or organic acids, by adjusting the concentration of tetraethylammonium bromide, chromatographic separation conditions can be optimized. For example, when analyzing certain alkaloids, it can form ion pairs with alkaloid cations, so that alkaloids have an appropriate retention time on the reversed-phase chromatographic column, thereby achieving better separation effects.

3. Surfactant - It can also be used as a cationic surfactant. In some emulsion polymerization reactions, tetraethylammonium bromide can reduce surface tension and enable monomers to be better dispersed in the reaction system. For example, in the emulsion polymerization of styrene, adding an appropriate amount of tetraethylammonium bromide can make styrene droplets disperse more evenly, which is conducive to the progress of the polymerization reaction and can improve the stability of the polymer emulsion.

4. Other applications - In the field of electrochemistry, tetraethylammonium bromide can be used as a component of electrolytes. In some batteries or electrochemical sensors, it can provide ion conduction channels. For example, in some electrochemical devices based on ion exchange membranes, tetraethylammonium bromide can help maintain the ion balance on both sides of the membrane, thereby ensuring the normal operation of the device.

Packaging and Shipping

25KG/Drum or as customer requirements.

Shipping: 6 types of dangerous goods and can deliver by ocean.

Keep and storage

Shelf life:24 month from date of manufacture in original unopened packaging stored in a cool dry place out of direct sunlight, water.
Ventilated warehouse, Low temperature drying, Separated from oxidants, acids.