28802-06-4 69979-89-1 Co-Tspc Cobalt phthalocyanine tetrasulfonate Cobalt tetrasulfophthalocyanine Cobaltate(4-), (29H,31H-phthalocyanine-C,C,C,C-tetrasulfonato(6-)-N29,N30,N31,N32)-, tetrahydrogen