Official EU label nameGlossary entry 6405

CI 42520

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:3248-91-7

EC:221-831-7

Ingredient index records:

CI 42520

Cosmetic functions: COLORANT, HAIR DYEING

4-[(4-Amino-m-tolyl)(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-o-toluidine monohydrochloride

Inventory restriction note: IV/67 (CI 42520) III/278 (Basic Violet 2)

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1 matched or reported name

CI 42520

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name CI 42520.

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 3248-91-7

CAS 3248-91-7PubChem CID 14454445

New Fuchsin

New fuchsin is a hydrochloride that is the monohydrochloride of 4-[(4-aminophenyl)(4-iminocyclohexa-2,5-dien-1-ylidene)methyl]-2-methylaniline. One of the minor constituents of Basic fuchsin, together with pararosanilin, rosanilin and magenta II. It has a role as a fluorochrome and a histological dye. It contains a new fuchsin(1+). — ChEBI

IUPAC name: 4-[(4-amino-3-methylphenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-methylaniline;hydrochloride

Molecular formula: C22H24ClN3
Molecular weight: 365.9 g/mol
Exact mass: 365.1658755 Da
Topological polar surface area: 75.9 Å²
Hydrogen-bond donors: 4
Hydrogen-bond acceptors: 3
Covalent units: 2
Defined stereocentres: 0

Also known as

BASIC VIOLET 2Magenta IIINeofuchsineNew magentaRemacryl magenta BAstrazon fuchsine GNTrimethyl fuchsinC.I. Basic Violet 2

16 more reported names

Fuchsin NBNSC-9858CI 42520C.I. 42520CHEBI:87671A051F48W36Benzenamine, 4,4'-((4-imino-3-methyl-2,5-cyclohexadien-1-ylidene)methylene)bis(2-methyl-, monohydrochlorideRefChem:572236C.I. Basic Violet 2 monohydrochloride221-831-7New fuchsineCalcozine New FuchsineFuchsine SBP4,4'-((4-Imino-3-methylcyclohexa-2,5-dien-1-ylidene)methylene)bis(2-methylaniline) hydrochlorideMagenta ABNNew fuchsine G crystal

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External database identifiers

ChEBI:CHEBI:87671
ChEMBL:CHEMBL1979779
EPA DTXSID:DTXSID80879817

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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