In the title crystal structure, C(12)H(22)NOSi(+)·Cl(-), anions and cations are linked via O-H⋯Cl, N-H⋯Cl and N-H⋯O hydrogen bonds to form a two-dimensional network parallel to (101). Within the hydrogen-bonded network, R(4) (2)(22) ring motifs are stacked along [010].