Is BASIC BLUE 99 safe to use in EU cosmetics?

BASIC BLUE 99 is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 68123-13-7?

CAS 68123-13-7 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3206928/07/2020

BASIC BLUE 99

3-[(4-amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphtyl)amino]-N,N,N-trimethylanilinium chloride (CI 56059)

BASIC BLUE 99 is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 68123-13-7

CAS 68123-13-7PubChem CID 93377

Basic Blue 99

IUPAC name: [3-[(4,8-diamino-6-bromo-5-hydroxy-1-oxonaphthalen-2-ylidene)amino]phenyl]-trimethylazanium chloride

Molecular formula: C19H20BrClN4O2
Molecular weight: 451.7 g/mol
Exact mass: 450.04582 Da
Topological polar surface area: 102.0 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 6
Covalent units: 2
Defined stereocentres: 0

Also known as

C.I. Basic Blue 99Jarocol Steel BlueP0U7VBC51ECI 56059ARIANOR STEEL BLUE 306004Benzenaminium, 3-((4-amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphthalenyl)amino)-N,N,N-trimethyl-, chlorideBenzenaminium, 3-((4-amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphthalenyl)amino)-N,N,N-trimethyl-, chloride (1:1)RefChem:116616

13 more reported names

268-544-3[3-[(4,8-diamino-6-bromo-5-hydroxy-1-oxonaphthalen-2-ylidene)amino]phenyl]-trimethylazanium;chloride3-((4-Amino-6-bromo-1-hydroxy-8-imino-5-oxo-5,8-dihydronaphthalen-2-yl)amino)-N,N,N-trimethylbenzenaminium chlorideBASICBLUE99UNII-P0U7VBC51EArianor Steel BlueEINECS 268-544-3CS-0434156[3-[(4,8-diamino-6-bromo-1,5-dioxonaphthalen-2-yl)amino]phenyl]-trimethylazanium,chloride3-((4-Amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphtha- lenyl)amino)-N,N,N-trimethylbenzenaminium chloride3-((4-Amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphtyl)amino)-N,N,N-trimethylanilinium chloride3-[(4-Amino-6-bromo-1-hydroxy-8-imino-5-oxo-5,8-dihydronaphthalen-2-yl)amino]-N,N,N-trimethylanilinium chlorideBenzenaminium, 3-((4-amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphtha- lenyl)amino)-N,N,N-trimethyl-, chloride

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID60874042

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 BASIC BLUE 99

INCI name

BASIC BLUE 99

Description

3-[(4-amino-6-bromo-5,8-dihydro-1-hydroxy-8-imino-5-oxo-2-naphtyl)amino]-N,N,N-trimethylanilinium chloride (CI 56059)

Record provenance

Inventory reference: 32069
Imported identity: BASIC BLUE 99
Source update: 28/07/2020

European Commission CosIng source notes

Annex records for BASIC BLUE 99

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Key data

CAS

68123-13-7

268-544-3

Restriction

—

Function

HAIR CONDITIONING: Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
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.

#3079 · BASIC BLUE 99

Ingredients with overlapping formulation functions

BASIC BLUE 6HAIR DYEING

BASIC BLUE 7HAIR DYEING

BASIC BLUE 75HAIR DYEING

BASIC BLUE 9HAIR DYEING

BASIC BROWN 16HAIR DYEING

BASIC BROWN 17HAIR DYEING

BASIC BROWN 4HAIR DYEING

BASIC GREEN 1HAIR 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 chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox 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

How BASIC BLUE 99 appears in the CosIng inventory

The CosIng inventory lists BASIC BLUE 99 as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

BASIC BLUE 99 is also tagged with 2 cosmetic functions 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

BASIC BLUE 99 is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, BASIC BLUE 99 carries the following function designation(s):

CAS 68123-13-7 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 BASIC BLUE 99

This page reproduces the CosIng inventory entry for BASIC BLUE 99 from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research BASIC BLUE 99 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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