Red No.227

Legal color:	Red No.227
General name:	Fast Acid Magenta
Class:	Acid Dye
FDA :	D & C Red No.33
CI #:	C.I. 17200
Color #:	Acid Red 33
CAS #:	3567-66-6
CAS :	2,7-Naphthalenedisulfonic acid,5-amino-4-hydroxy-3-(phenylazo)-,disodium salt
IUPAC:	→1;Disodium 5-amino-4-hydroxy-3-phenylazo-2,7-naphthalenedisulfonate →2;5-Amino-4-hydroxy-3-phenylazo-2,7-naphthalenedisulfonic acid disodium salt
Chemical structure :	Fast Acid Magenta