68412-18-0 Cyanine dye EINECS 270-174-2 Nickel, (29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32)-, sulfo ((4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)amino)sulfonyl derivs. Nickel, (29H,31H-phthalocyaninetetrasulfonylchloridato(2-)-N29,N30,N31,N32)-, reaction product with 4-((2-(sulfooxy)ethyl)sulfonyl)benzenamine