Basic Blue 26

Also known as: Methanaminium, N-[4-[[4-(dimethylamino)phenyl][4-(phenylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride, Methanaminium, N-[4-[[4-(dimethylamino)phenyl][4-(phenylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride (1:1), (4-((4-Anilino-1-naphthyl)(4-(dimethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)dimethylammonium chloride, N-(4-((4-(Dimethylamino)phenyl)(4-(phenylamino)-1-naphthalenyl)methylene)-2,5- cyclohexadien-1-ylidene)-N-methylmethanaminium, chloride, ADC Victoria Blue B (+15 more)

INCI: BASIC BLUE 26

Basic Blue 26 (CAS 2580-56-5) is a cosmetic cosmetic ingredient functioning as Hair dyeing (cationic direct dye). EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.

View industrial chemical safety profile for CAS 2580-56-5 →

Auto-generated CPSR Part A draft with source citations
Function
Hair dyeing (cationic direct dye)
Safety Rating
POOR

Chemistry & Identifiers

Formula
C33H32ClN3
MW
506.1 g/mol
EC Number
219-943-6
PubChem CID
17407
IUPAC Name
[4-[bis[4-(dimethylamino)phenyl]methylidene]naphthalen-1-ylidene]-phenylazanium chloride
InChIKey
LLWJPGAKXJBKKA-UHFFFAOYSA-N

Regulatory Status

EU EU Status prohibited
US US Status permitted
US Notes Coal-tar hair dye exemption applies with required caution labeling

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Basic Blue 26.

Calculate MoS for your specific formulation with the MoS Calculator.

ECHA REACH Registration

European Chemicals Agency REACH dossier and Substances of Very High Concern listing.

Registration Type
Full
Tonnage Band
Ceased manufacture
Substance Type
SUBSTANCE
SVHC Candidate
Yes (since 18-Jun-2012)
Hazard classification: Restricted (Annex XVII)
SVHC reason: Carcinogenic (Article 57a)
Substance of Very High Concern (SVHC)
Included: 18-Jun-2012
Carcinogenic (Article 57a)

EU CosIng Annex Listing

European Commission CosIng database Annex references per Regulation (EC) No 1223/2009.

Annex II — Prohibited
Ref: 1340
(EC) 2013/344
Annex IV — Permitted Colorants
Product type: Blue

Expanded Jurisdictional Detail

Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.

SA Saudi SFDA (II - Prohibited)
ASEAN Cosmetic Directive (II)
Ref: 1340
BRIN Brazil/India Cosmetics
Brazil: Prohibited
India: Prohibited (GNRAS)
India: Permitted Colorant

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Dye
Regulatory List Membership (3)
EU Banned in Cosmetics EU Regulated in Personal Care EU CosIng Cosmetics Ingredient Database

Expert Verdict

Expert safety assessment and concern-level summary for Basic Blue 26.

Regulatory Flags

eu_banned_cosmetics eu_cosing_listed

Known Synonyms

Methanaminium, N-[4-[[4-(dimethylamino)phenyl][4-(phenylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride Methanaminium, N-[4-[[4-(dimethylamino)phenyl][4-(phenylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride (1:1) (4-((4-Anilino-1-naphthyl)(4-(dimethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)dimethylammonium chloride N-(4-((4-(Dimethylamino)phenyl)(4-(phenylamino)-1-naphthalenyl)methylene)-2,5- cyclohexadien-1-ylidene)-N-methylmethanaminium, chloride ADC Victoria Blue B Aizen Victoria Blue B Base Aizen Victoria Blue BH Calcozine Blue B EINECS 219-943-6 Hecto Blue B Hekto Blue B Hidaco Victoria Blue B Hidaco Victoria Blue B Base Mitsui Victoria Blue B NSC 11245 Symulex Blue BOF Tertrophene Blue Tungstate Blue Toner BT-311 Victoria Blue B Victoria Blue BA

Chemical Function

Dye

Regulatory Lists

Europe; Personal care banned; Europe; Personal care Europe; Personal care; restricted

Australian Status

AICIS status: listed

Frequently Asked Questions

Is Basic Blue 26 safe in cosmetics?

Basic Blue 26 has a safety rating of "POOR" in our database. EU status: prohibited. US status: permitted.

Is Basic Blue 26 allowed in the EU?

Basic Blue 26 EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Basic Blue 26 do in cosmetics?

Basic Blue 26 functions as: Hair dyeing (cationic direct dye). It is classified as a cosmetic ingredient in our database. CAS number: 2580-56-5.

Is Basic Blue 26 used outside cosmetics?

Basic Blue 26 also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

Does Basic Blue 26 have different safety status in cosmetics vs industrial chemicals?

Basic Blue 26 is prohibited in EU cosmetics but has active industrial GHS classifications (H302, H317, H318, H319, H400, H410, H301, H351).

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