Tags: Chemical Compound, Chemical Substance.
Tetramethylammonium (TMA) or (Me4N+) is the simplest quaternary ammonium cation consisting of four methyl groups attached to a central nitrogen atom and is positively charged. It must exist in association with a counter-ion and is most commonly found in simple salts such as tetramethylammonium chloride tetramethylammonium bromide tetramethylammonium iodide and tetramethylammonium hydroxide.
