FD&C Red No. 3

Product Description

Product	FD&C Red No. 3
CAS	16423-68-0
Formula	C₂₀H₆I₄O₅ ₂Na
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

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+]
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
Class	Specialty Chemicals
Function	Additive
Industry	Cosmetic, Pharmaceutical

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