(1E,1'E)-4,4'-[1,1'-(Hydrazine-1,2-diyl-idene)bis-(ethan-1-yl-1-yl-idene)]diphenol dihydrate.

The asymmetric unit of the title compound, C(16)H(16)N(2)O(2)·2H(2)O, contains one half-mol-ecule of diphenol and one water mol-ecule. The complete diphenol mol-ecule is generated by a crystallographic inversion centre. In the mol-ecule, the central C(meth-yl)-C=N-N=C-C(meth-yl) plane makes a dihedral angle of 8.88 (6)° with its adjacent benzene ring. In the crystal, the components are linked by O-H⋯N and O-H⋯O hydrogen bonds into a three-dimensional network. The crystal structure is further stabilized by a weak C-H⋯π inter-action.