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Red No.206
Legal color:Red No.206  
General name:Lithol Red CA   
Class:Pigment
FDA :(D & C Red No.11)  
CI #:C.I. 15630
Color #:Pig. Red 49(Ca)
CAS #:1103-39-5
CAS :1-Naphthalenesulfonic acid,2-[(2-hydroxy-1-naphthalenyl)azo]-,calcium salt(2:1)
IUPAC:→1;Calcium bis[2-(2-hydroxy-1-naphthylazo)-1-naphthalenesulfonate]
 →2;2-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid calcium salt (2:1)
Chemical structure :

Lithol Red CA