2-Chloro­benzene-1,4-diaminium bis­(dihydrogenphosphate)

The asymmetric unit of the title salt, C₆H₉ClN₂²⁺·2H₂PO₄⁻, contains two dihydrogenphosphate anions and one 2-chloro­benzene-1,4-diaminium dication. The H₂PO₄⁻ anions are inter­connected through strong O—H...O hydrogen bonds to form two-dimensional infinite layers parallel to (001). The organic entities are anchored to the inorganic layers through N—H...O hydrogen bonds, and through weak C—Cl...O halogen bonds [3.159 (2) Å, 140.48 (7)°]. No π–π stacking inter­actions between neighboring aromatic rings or C—H...π inter­actions towards them are observed. Minor disorder is observed for the Cl atom and one hy­droxy group [minor-component occupancy = 3.29 (9)%].