4-Nitro-phenol-2,4,6-triamino-1,3,5-triazine-water (2/1/1).

In the title adduct, 2C(6)H(5)NO(3)·C(3)H(6)N(6)·H(2)O, the melamine and the two independent nitrophenol molecules are essentially planar, with maximum deviations of 0.0294†(10), 0.0706†(12) and 0.0742†(12)†à , respectively. In the crystal, N-H⋯N, O-H⋯N, N-H⋯O and O-H⋯O hydrogen bonds link the components into a three-dimensional network. In addition, weak π-π inter-actions [centroid-centroid distances = 3.728†(3) and 3.749†(3)†à ] are observed.