ROSEBENGALA
Acid Red 93
ROSEBENGALEA
Rose Bengal AT
C.I.Acid Red 93
C.I.Acid Red 93:C.I.45435
disodium,4,7-dichloro-2',4',5',7'-tetraiodo-3-oxospiro[2-benzofuran-1,9'-xanthene]-3',6'-diolate
4,7-Dichloro-3',6'-bis(sodiooxy)-2',4',5',7'-tetraiodospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one
2,7-Dichloro-6-hydroxy-9-phenyl-3H-xanthen-3-one in Potassium chlorate with iodine (or sodium) and Copper chloride in four of the presence of iodine.
Properties and Applications
blue-ray red. Soluble in water is cherry red, no fluorescence. The strong sulfuric acid to tan, diluted into tan precipitation. In water solution to join sodium hydroxide solution generation after dark red precipitate.
