title: Bis(dimethyl-ammonium) 2,5-dihy-droxy-benzene-1,4-disulfonate.
abstract: In the crystal of the title salt, 2C(2)H(8)N(+)·C(6)H(4)O(8)S(2) (2-), the anion lies on a center of inversion. The dimethyl-ammonium cation forms one N-H⋯O hydrogen bond and another bifurcated N-H⋯O hydrogen bond. The hy-droxy group links with the sulfonyl group via an inter-molecular O-H⋯O hydrogen bond. These N-H⋯O and O-H⋯O hydrogen bonds generate a three-dimensional network.
authors.forename: Shan
authors.initials: S
authors.lastname: Gao
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng