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Orange No.203

Legal color: 
General name:Permanent Orange   
Class:Pigment
FDA :(D & C Orange No.17)
CI #:C.I. 12075
Color #:Pig. Orange 5
CAS #:3468-63-1
CAS :2-Naphthalenol,1-[(2,4-dinitrophenyl)azo]-
IUPAC:→1;1-(2,4-Dinitrophenylazo)-2-naphthol
Chemical structure :

Permanent Orange