title: Ethane-1,2-diammonium naphthalene-1,5-disulfonate.
abstract: In the crystal structure of the title salt, C(2)H(10)N(2) (2+)·C(10)H(6)O(6)S(2) (2-), both the cation and anion lie on special positions of site symmetry. These are linked by N-H⋯O and N-H⋯(O,O) hydrogen bonds, forming a layer structure.
authors.forename: Zhi-Biao
authors.initials: ZB
authors.lastname: Zhu
authors.forename: Shan
authors.initials: S
authors.lastname: Gao
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng