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来自维基百科,自由的百科全书
季铵盐[1][2](quaternary ammonium salts)又称四级铵盐或活性四级化合物,是铵离子的四个氢原子都由烃基取代而形成的季铵阳离子(quaternary ammonium cations,quats)盐,通式 R₄N⁺X⁻。其中四条烃基R₄可以相同,也可以不同;X⁻多为卤素阴离子,HSO₄⁻,RCO₂⁻及OH⁻(R₄NOH 称为 季铵碱)。
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