The asymmetric unit of the title salt C8H22N42+·2C7H5O2−, comprises two independent pairs of half a 2,2′-(piperazine-1,4-diyl)diethanaminium dication plus a benzoate anion.The dications are symmetrical and lie across crystallographic centres of inversion.The crystal Coffee structure was refined as a two-component pseudo-merohedral twin using the twin law 001 0-10 100 [he domain fractions are 0.8645 (8) and 0.
1355 (8)].The anions and cations are linked by N—H.O hydrogen bonds and weak N—H.O intermolecular interactions to form infinite two-dimensional networks parallel to [101].
The conformation adopted by the cation in the crystal structure is very similar to that adopted 3 Piece Outdoor Dining Set by the same cation in the structures of the 2-hydroxybenzoate [Cukrowski et al.(2012).Acta Cryst, E68, o2387], the nitrate and the tetrahydrogen pentaborate salts.