Synonyms: Nickel,[tetrahydrogen phthalocyaninetetrasulfonato(2-)]-, tetrasodium salt (8CI);Nickelate(4-),[29H,31H-phthalocyanine-C,C,C,C-tetrasulfonato(6-)-N29,N30,N31,N32]-,tetrasodium; Nickelate(4-), [29H,31H-phthalocyanine-C,C,C,C-tetrasulfonato(6-)-kN29,kN30,kN31,kN32]-, tetrasodium (9CI);29H,31H-Phthalocyanine-C,C,C,C-tetrasulfonic acid, nickel complex; Nickel (II)phthalocyaninetetrasulfonic acid, tetrasodium salt; Tetrasulfonated nickelphthalocyanine sodium salt