4-Nitro­phenol–2,4,6-triamino-1,3,5-triazine–water (2/1/1)

In the title adduct, 2C₆H₅NO₃·C₃H₆N₆·H₂O, 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) Å, 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 inter­actions [centroid–centroid distances = 3.728 (3) and 3.749 (3) Å] are observed.