2-Naphthalenecarboxylic acid, 3-hydroxy-4-((4-methyl-2-sulfophenyl)azo)-, strontium salt (1:1) 3-Hydroxy-4-((4-methyl-2-sulfophenyl)azo)-2-naphthalenecarboxylic acid, strontium salt (1:1) 73612-29-0 EINECS 277-552-6 Strontium 3-hydroxy-4-((4-methyl-2-sulphonatophenyl)azo)-2-naphthoate