PRODUCT SPECIFICATIONS

PRODUCT	FD&C Red No. 3
CAS #	16423-68-0
SYNONYM	Acid red 51;9-(o-Carboxyphenyl)-6-hydroxy-2,4,5,7-tetraiodo-3-isoxanthone; CI 45430; 3,6-Dihydroxy-2,4,5,7-tetraiodospiro [isobenzofuran-1(3H),9-[9H] xanthen]-3-one disodium salt; Erythrosin; Erythrosin B Erythrosine; FDC Red No. 3; Fluorescein, 2,4,5,7-tetraiodo-, disodium salt; Food red 14; Iodoeosin Solvent red 140; Spiro [isobenzofuran-1(3H),9-[9H]-xanthen]-3-one, 3,6-dihydroxy-2,4,5,7-tetraiodo-, disodium salt; 2,4,5,7-Tetraiodofluorescein disodium salt; Tetraiodofluorescein sodium salt
FORMULA	C20H6I4O5 2Na
MOLECULAR WEIGHT	534.37
SMILES	n1(c2ccc(cc2)S(=O)(=O)[O-])c(c(c(n1)C(=O)[O-])/N=N/c1ccc(cc1)S(=O)(=O)[O-])O.[Na+].[Na+].[Na+]
INCHI	UJMBCXLDXJUMFB-GLCFPVLVSA-K
INCHIKEY	1S/C16H12N4O9S2.3Na/c21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;;;/h1-8,13H,(H,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b18-17+;;;
ATMOSPHERIC OH RATE CONSTANT	3.69E-11 cm3/molecule-sec
LOG P (OCTANOL-WATER)	-10.17
NOTES	FD&C Red No. 3 is a Disodium salt of 2,4,5,7tetraiodofluorescein FD&C Red No. 3 uses and applications include: Photographic sensitizing; pigment for printing inks; biological stain; as plasma stain for nerve cells (with methylene blue); for staining bacteria in soil; as a phosphorescent triple probe for studying diffusion of membrane proteins; colorant in foods, cosmetics, hair dyes, ingested pharmaceuticals Suggested storage of FD&C Red No. 3 : Hygroscopic

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