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InventoryRef 3161218/10/2010

ACID BLUE 74

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

ACID BLUE 74 is linked to 1 EU annex record on this page. Inventory note: IV/99.

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Regulatory evidence by market

This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.

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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Positive-list entry with conditions
Open this evidence		1English and EU languages
Great BritainSource mapped
Official source mapped; ingredient rule not imported
0English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandSource mapped
Official source mapped; ingredient rule not imported
0English
ASEANSource mapped
Official source mapped; ingredient rule not imported
0English and national languages
ChinaSource mapped
Official source mapped; ingredient rule not imported
0Chinese with selected English material
JapanSource mapped
Official source mapped; ingredient rule not imported
0Japanese; official English translation available
South KoreaSource mapped
Official source mapped; ingredient rule not imported
0Korean with some English names
United StatesSource mapped
Official source mapped; ingredient rule not imported
0English
AustraliaSource mapped
Official source mapped; ingredient rule not imported
0English
BrazilSource mapped
Official source mapped; ingredient rule not imported
0Portuguese with INCI crosswalks
IndiaSource mapped
Official source mapped; ingredient rule not imported
0English and Hindi
Saudi ArabiaSource mapped
Official source mapped; ingredient rule not imported
0Arabic and English

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 Ų
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
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

Inventory details for ACID BLUE 74

INCI name

ACID BLUE 74

INN name

indigotindisulfonate sodium

Description

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

Record provenance

Inventory reference
31612
Imported identity
ACID BLUE 74
Source update
18/10/2010
European Commission CosIng source notes
Annex IV Restriction reference
Entry 99

CI 73015

CAS: 860-22-0
EC: 212-728-8

Key data

CAS
860-22-0
EC
212-728-8
Restriction
IV/99
Function
HAIR DYEING
Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, or permanent, depending on the length of time the colorant remains on the hair.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#847 · ACID BLUE 74

Records sharing a CAS or EC identity

CI 73015

Ingredients with overlapping formulation functions

ACID BLACK 52HAIR DYEING
ACID BLUE 1HAIR DYEING
ACID BLUE 3HAIR DYEING
ACID BLUE 62COLORANT, HAIR DYEING
ACID BLUE 74 ALUMINUM LAKEHAIR DYEING
ACID BLUE 9HAIR DYEING
ACID BLUE 9 ALUMINUM LAKEHAIR DYEING
ACID BLUE 9 AMMONIUM SALTHAIR DYEING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How ACID BLUE 74 appears in the CosIng inventory

The CosIng inventory lists ACID BLUE 74 as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

ACID BLUE 74 is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

ACID BLUE 74 appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for ACID BLUE 74 reads: "IV/99". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, ACID BLUE 74 carries the following function designation(s):

CAS 860-22-0 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.
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Source note for ACID BLUE 74

This page combines the CosIng inventory entry for ACID BLUE 74 with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research ACID BLUE 74 and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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