In the title molecular salt, 2C(3)H(10)NO(+)center dot C(10)H(6)O(6)S(2)(2-), the cations and anions are associated via N-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen-bonding interactions, giving rise to a three-dimensional structure with zigzag rows of cations lying between rows of anions. The asymmetric unit contains one cation and one half-anion, which is related to the remainder of the molecule by an inversion center.