[Hydrogen bis­(1,2,4-triazole)] 1,2,4-triazolium bis­(3-carb­oxy-4-hy­droxy­benzene­sulfonate) 1,2,4-triazole disolvate

The title compound, C(2)H(4)N(3) (+)·[H(C(2)H(3)N(3))(2)](+)·2C(7)H(5)O(6)S(−)·2C(2)H(3)N(3), consists of two types of 1,2,4-triazole monocation, one protonated at the 2-site lying across a twofold axis and the other protonated at the 4-site with the H atom disordered over a center of symmetry, a 5-sulfosalicylate anion and a neutral 1,2,4-triazole mol­ecule. The component ions are linked into a three-dimensional network by a combination of N—H⋯O, N—H⋯N, O—H⋯O, O—H⋯N, C—H⋯O and C—H⋯N hydrogen bonds. In addition, benzene–benzene π–π inter­actions of 3.942 (2) Å [inter­planar spacing = 3.390 (2) Å] and C—O⋯π (3.331 Å) inter­actions are observed.