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The asymmetric unit of the title compound, C6H16N+·C3H2N3S3−, contains two independent ion pairs. The 2,4,6-trithioxo-1,3,5-triazinan-1-ide anion features an almost planar six-membered ring (r.m.s. deviations = 0.009 and 0.018 Å) having exocyclic double-bond S atoms. The anions interact by N—H...S hydrogen bonds to generate a chain running along [110]. The triethylammonium cations are hydrogen bonded to the anions with the ammonium H atom forming a hydrogen bond to the negatively-charged N atom of the anion. In the crystal structure, both triethylammonium cations are disordered over two orientations with equal occupancies.