Red No.231

Legal color:	Red No.231
General name:	Phloxine BK
Class:
FDA :
CI #:	C.I. 45410
Color #:	Acid Red 92
CAS #:	18472-87-2(?)
CAS :	Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,2',4',5',7'- tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-,disodium salt(?)
IUPAC:	→1;2,4,5,7-Tetrabromo-3,6-dihydroxyxanthene-9-spiro-1'-(4',5',6',7' -tetrachlror-3'H-isobenzofuran-3'-one dipotassium salt →2;2',4',5',7'-Tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-spiro[3H- isobenzofuran-1,9'-9H-xanthene]-3-one dipotassium salt →3;9-(2-Carboxy-3,4,5,6-tetrachlorophenyl)-2,4,5,7-tetrabromo-3, 6-dihydroxyxanthylium dipotassium salt
Chemical structure :