1.0 2010-04-08 22:12:40 UTC 2025-11-19 01:49:58 UTC FDB016811 C.I. Pigment Red 172 Former food dye prohibited from use in foods 2',4',5',7'-Tetraiodofluorescein, aluminum salt Acid Red 51:1 C.I. Acid Red 51:1 C.I. Food Red 14:1 C.I. Pigment red 172 Certolake erythrosine Erythrosine-aluminum lake FD&C Red No. 3-aluminum lake Food Red 14:1 Food Red No. 3-aluminum lake Japan Food Red No. 3 aluminum lake Japan Red 3 aluminum Lake Pigment Red 172 C60H18Al2I12O15 2555.5926 2554.881267828 dialuminium(3+) ion tris(2',4',5',7'-tetraiodo-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-3',6'-bis(olate)) dialuminium(3+) ion tris(2',4',5',7'-tetraiodo-3-oxospiro[2-benzofuran-1,9'-xanthene]-3',6'-bis(olate)) 12227-78-0 [Al+3].[Al+3].[O-]C1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C([O-])C(I)=C1O2.[O-]C1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C([O-])C(I)=C1O2.[O-]C1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C([O-])C(I)=C1O2 InChI=1S/3C20H8I4O5.2Al/c3*21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20;;/h3*1-6,25-26H;;/q;;;2*+3/p-6 PMKLVGOZGNPKLG-UHFFFAOYSA-H belongs to the class of organic compounds known as xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene rings joined to each other by a pyran ring. Xanthenes Organic compounds Organoheterocyclic compounds Benzopyrans 1-benzopyrans Aryl iodides Benzofuranones Carboxylic acid esters Diarylethers Hydrocarbon derivatives Isobenzofurans Lactones Monocarboxylic acids and derivatives Organic aluminium salts Organic metal halides Organic oxides Organic zwitterions Organoiodides Oxacyclic compounds Phenoxides Phthalides Aromatic heteropolycyclic compound Aryl halide Aryl iodide Benzenoid Benzofuranone Carboxylic acid derivative Carboxylic acid ester Diaryl ether Ether Hydrocarbon derivative Isobenzofuran Isobenzofuranone Isocoumaran Lactone Monocarboxylic acid or derivatives Organic aluminium salt Organic metal halide Organic oxide Organic oxygen compound Organic salt Organic zwitterion Organohalogen compound Organoiodide Organooxygen compound Oxacycle Phenoxide Phthalide Xanthene logp 5.93 ALOGPS logs -6.52 ALOGPS solubility 7.72e-04 g/l ALOGPS logp 7.6 ChemAxon pka_strongest_acidic 6.5 ChemAxon pka_strongest_basic -7 ChemAxon iupac dialuminium(3+) ion tris(2',4',5',7'-tetraiodo-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-3',6'-bis(olate)) ChemAxon average_mass 2555.5926 ChemAxon mono_mass 2554.881267828 ChemAxon smiles [Al+3].[Al+3].[O-]C1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C([O-])C(I)=C1O2.[O-]C1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C([O-])C(I)=C1O2.[O-]C1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C([O-])C(I)=C1O2 ChemAxon formula C60H18Al2I12O15 ChemAxon inchi InChI=1S/3C20H8I4O5.2Al/c3*21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20;;/h3*1-6,25-26H;;/q;;;2*+3/p-6 ChemAxon inchikey PMKLVGOZGNPKLG-UHFFFAOYSA-H ChemAxon polar_surface_area 81.65 ChemAxon refractivity 165.77 ChemAxon polarizability 54.4 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 3 ChemAxon donor_count 0 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon