(2-Hydroxy­ethyl)(prop­yl)aza­nium 2-[(2-carboxy­phen­yl)disulfan­yl]benzoate monohydrate

With the exception of the terminal hydr­oxy group [N—C—C—O = 53.8 (5)°], the cation of the title salt hydrate, C(5)H(14)NO(+)·C(14)H(9)O(4)S(2) (−.)H(2)O, is a straight chain. A twisted conformation is found for the anion [C—S—S—C = −87.44 (16)°]. In the crystal, the anions self-assemble into a helical supra­molecular chain via charge-assisted O—H⋯O(c) hydrogen bonds. These chains are connected into a three-dimensional network via N—H⋯O(c), N—H⋯O(w), O(h)—H⋯O(cb), and O(w)—H⋯O(c) hydrogen-bonding inter­actions (c = carboxyl­ate, w = water, h = hydr­oxy and cb = carbon­yl).