Description
Specifications Table
Product Name – Tetraethylammonium bromide BAKER™
Quantity/Pack Size – 500 g
Form – Crystalline powder
Grade – Laboratory/ACS reagent grade (99% min purity)
Application – Electrochemistry, phase-transfer catalysis, ion-pairing reagent
Product Overview
Tetraethylammonium bromide (TEAB) from BAKER™ is a high-purity quaternary ammonium salt designed for demanding laboratory applications. This crystalline powder maintains ≥99% purity, ensuring reliable results in electrochemical experiments, where it serves as a supporting electrolyte due to its wide electrochemical window and stability. Its hydrophobic tetraethylammonium cation makes it particularly effective in phase-transfer catalysis, facilitating reactions between aqueous and organic phases by transporting anions across interfaces. The compound’s low hygroscopicity and high solubility in polar solvents like methanol and acetonitrile further enhance its utility in ion-pair chromatography, where it improves peak resolution for ionic analytes. Unlike smaller ammonium salts, TEAB’s bulky structure minimizes ion-pairing interference with analytes, making it a preferred choice for HPLC and CE applications. The BAKER™ grade undergoes rigorous quality control to eliminate trace metal impurities, which is critical for sensitive analytical techniques. Store in a tightly sealed container under inert conditions to prevent moisture absorption, as prolonged exposure to humidity may lead to caking without affecting chemical performance.
FAQs
1. What is the solubility of Tetraethylammonium bromide in common solvents?
Tetraethylammonium bromide is highly soluble in polar solvents like water (≈600 g/L at 20°C), methanol, and acetonitrile. It has limited solubility in nonpolar solvents such as hexane or diethyl ether.
2. Can this product be used as a supporting electrolyte in non-aqueous electrochemistry?
Yes, its wide electrochemical window and stability in organic solvents like acetonitrile or DMF make it suitable for non-aqueous electrochemical studies, including cyclic voltammetry and impedance spectroscopy.
3. How does Tetraethylammonium bromide compare to tetrabutylammonium salts?
Tetraethylammonium bromide offers better solubility in water and lower viscosity in solutions compared to tetrabutylammonium salts, but the latter provides a broader electrochemical window in non-aqueous systems.
4. What precautions should be taken during storage to maintain product integrity?
Store in an airtight container under dry, inert conditions (e.g., nitrogen or argon) to prevent moisture absorption. Avoid prolonged exposure to light or temperatures above 30°C.
5. Is this product compatible with mass spectrometry applications?
While it can be used in LC-MS, its non-volatile nature may cause ion suppression. For ES-MS, volatile alternatives like ammonium acetate are often preferred to minimize background interference.
