In the title onium salt, C6H13N2+. C2H6NO4S2-, the anion adopts an ext
ended conformation closely approximating to C-2 symmetry. The cations
are connected by an N-H...N hydrogen bond to form chains parallel to t
he x axis, whereas the anions are assembled into chains parallel to th
e z axis by two C-H...O interactions. Further C-H...O hydrogen bonds o
ccur between cations and anions.