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In the structure of the title molecular salt, C10H18N22+·2NO3−, the dinitrate salt of 4-(N,N-diethylamino)aniline, the two ethyl groups lie almost perpendicular to the plane of the benzene ring [the ring-to-ethyl C—C—N—C torsion angles are −59.5 (2) and 67.5 (3)°]. The aminium groups of the cation form inter-species N—HO hydrogen bonds with the nitro O-atom acceptors of both anions, giving rise to chain substructures lying along c. The chains are linked via further N—HO hydrogen bonds, forming two-dimensional networks lying parallel to (010). These sheets are linked by C—HO hydrogen bonds, forming a three-dimensional structure.