2-Naphthalenecarboxylic acid, 4-((4-chloro-5-ethyl-2-sulfophenyl)azo)-3-hydroxy-, strontium salt (1:1) 67801-10-9 C.I. Pigment Red 200, strontium salt EINECS 267-129-4 Strontium 4-((4-chloro-5-ethyl-2-sulphonatophenyl)azo)-3-hydroxy-2-naphthoate (1:1)