The characterized organic trihydrate title salt, C17H17N4 +·C7H5O5 -·3H2O or (HL)+(Gal)-·3H2O, with L = 1,3-bis-(1H-benzimidazol-2-yl)propane (C17H16N4) and HGal = 3,4,5-tri-hydroxy-benzoic acid (gallic acid, C7H6O5), crystallizes with two formulas per asym... ...