Dihydroxonium 1,5-naphthalenedisulfonateN,N-dimethylformamide disolvate

In the title salt adduct, 2H3O+·C10H6O6S22−·2C3H7NO, the 1,5-naphthalene­disulfonate dianion lies on an inversion center. Inter­molecular inter­actions link two hydroxonium cations, one 1,5-naphthalene­disulfonate dianion and two N,N-dimethyl­formamide mol­ecules into a short hydrogen-bonded chain. A supramolecular hydrogen-bonding network structure is formed via further inter­molecular hydrogen bonds.