title: 3-Amino-pyridinium 4-hydr-oxy-3-iodo-naphthalene-1-sulfonate dihydrate.
abstract: In the hydrated title salt, C(5)H(7)N(2) (+)·C(10)H(6)IO(4)S(-)·2H(2)O, the component species are linked by O-H⋯O and N-H⋯O hydrogen bonds, forming an infinite three-dimensional framework.
authors.affiliation: Basic Experiment Teaching Center, Henan University, Kaifeng 475001, People's Republic of China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.forename: Jie
authors.initials: J
authors.lastname: Li