Tetramethylammonium (hydrogensulfate)

Tetramethylammonium hydrogensulfate, sometimes abbreviated as TMAHS, is a quaternary ammonium salt commonly used as a catalyst and phase transfer agent in chemical reactions, especially in organic synthesis. In addition, it is used as an electrolyte additive in electrochemical and rechargeable batteries. TMAHSs have also been investigated for their potential use in various applications such as wastewater treatment, gas separation, and fuel cells.