In dictionaries:
tetramethylammonium hydroxide
(organic chemistry) The quaternary ammonium base (CH₃)₄N⁺ OH⁻
Tetramethylammonium chloride
one of the simplest quaternary ammonium salts, with four methyl groups tetrahedrally attached to the central N. The chemical formula4N+Cl− is often abbreviated further as Me4N+Cl−.
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