Official EU label nameGlossary entry 847

ACID BLUE 74

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Resolved identifiers

Resolved substance identity

CAS:860-22-0

EC:212-728-8

Ingredient index records:

ACID BLUE 74

Cosmetic functions: HAIR DYEING

Disodium 5,5'-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate (CI 73015)

Inventory restriction note: IV/99

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2 matched or reported names

ACID BLUE 74indigotindisulfonate sodium

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name ACID BLUE 74.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 860-22-0

CAS 860-22-0PubChem CID 2723854

Indigo carmine

Indigo carmine is an organic sodium salt resulting from the formal condensation of indigo carmine (acid form) with two equivalents of sodium hydroxide. It is an indicator at pH 11.5-14, changing from blue to yellow. It has a role as a two-colour indicator, a histological dye and a food colouring. It contains an indigo carmine(2-). — ChEBI

IUPAC name: disodium;2-(3-hydroxy-5-sulfonato-1H-indol-2-yl)-3-oxoindole-5-sulfonate

Molecular formula: C16H8N2Na2O8S2
Molecular weight: 466.4 g/mol
Exact mass: 465.95174613 Da
Topological polar surface area: 197.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 9
Covalent units: 3
Defined stereocentres: 0

Also known as

Acid Blue 74Indigotindisulfonate sodiumIndigotineindigocarmineC.I. ACID BLUE 74Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonateIndigocarminC.I. Food Blue 1

16 more reported names

FD&C Blue No. 2Food Blue No. 2FD & C blue no. 2FD and C Blue No. 2SachsischblauMurabbaAmacid Brilliant BlueIndigotine LakeIndocarmine FSoluble IndigoDisodium 5,5'-disulfoindigoIndigotine BIndigotine IIndigotine NIntense BlueIndigotin I

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External database identifiers

ChEBI:CHEBI:31695
ChEMBL:CHEMBL2105023
EPA DTXSID:DTXSID1020190

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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