2-Naphthalenecarboxylic acid, 4-((4-chloro-5-methyl-2-sulfophenyl)azo)-3-hydroxy-, strontium salt (1:1) 67828-72-2 C.I. 15860, strontium salt C.I. Pigment Red 52, strontium salt EINECS 267-291-6 Strontium 4-((4-chloro-5-methyl-2-sulphonatophenyl)azo)-3-hydroxy-2-naphthoate (1:1)