What does the restriction note for ACID VIOLET 9 mean?

The restriction field for ACID VIOLET 9 reads: II/1335 (when used as a substance in hair dye products). This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 6252-76-2?

CAS 6252-76-2 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.

How do I check if my formula contains ACID VIOLET 9?

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 3163512/08/2020

ACID VIOLET 9

Hydrogen 9-(2-carboxylatophenyl)-3-(2-methylanilino)-6-(2-methyl-4-sulphoanilino)xanthylium, monosodium salt (CI 45190)

ACID VIOLET 9 is linked to 2 EU annex records on this page. Inventory note: II/1335 (when used as a substance in hair dye products).

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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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Market	Evidence status	Records	Source language
European Union	Evidence linked Prohibited entry found Open this evidence	2	English and EU languages
Great Britain	Source mapped Official source mapped; ingredient rule not imported	0	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Source mapped Official source mapped; ingredient rule not imported	0	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Source mapped Official source mapped; ingredient rule not imported	0	English and Hindi
Saudi Arabia	Source mapped Official source mapped; ingredient rule not imported	0	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 6252-76-2

CAS 6252-76-2PubChem CID 76968456

Acid Violet 9

IUPAC name: sodium 4-[[9-(2-carboxyphenyl)-6-(2-methylanilino)xanthen-10-ium-3-yl]amino]-3-methylbenzenesulfonate

Molecular formula: C34H26N2NaO6S+
Molecular weight: 613.6 g/mol
Exact mass: 613.14092701 Da
Topological polar surface area: 128.0 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 7
Covalent units: 2
Defined stereocentres: 0

Also known as

C.I. Acid Violet 9CI 45190AKA401824V98947AUNII-824V98947AEINECS 228-377-9Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, hydroxide, inner salt, monosodium salt9-(2-CARBOXYPHENYL)-3-((2-METHYLPHENYL)AMINO)-6-((2-METHYL-4-SULFOPHENYL)AMINO)XANTHYLIUM, HYDROXIDE, INNER SALT, MONOSODIUM SALT

14 more reported names

BENZOIC ACID, O-(3-((4-SULFO-O-TOLYL)IMINO)-6-O-TOLUIDINO-3H-XANTHEN-9-YL)-, MONOSODIUM SALTRefChem:109249AKA401 [INCI]ACID VIOLET 9 [INCI]CI 45190 [INCI]228-377-99-(2-Carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf-ophenyl)amino)xanthylium, hydroxide, inner salt, monosodium saltXanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf-ophenyl)amino)-, hydroxide, inner salt, monosodium saltXanthylium, 9-(2-carboxyphenyl)-3-[(2-methylphenyl)amino]-6-[(2-methyl-4-sulfophenyl)amino]-, inner saltHydrogen 9-(2-carboxylatophenyl)-3-(2-methylanilino)-6-(2-methyl-4-sulphoanilino)xanthylium, monosodium salt9-(2-Carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf- ophenyl)amino)xanthylium, hydroxide, inner salt, monosodium saltXanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulf- ophenyl)amino)-, hydroxide, inner salt, monosodium saltXanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, inner salt, monosodium saltXanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, inner salt, sodium salt (1:1)

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External database identifiers

EPA DTXSID:DTXSID601369643

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for ACID VIOLET 9

INCI name

ACID VIOLET 9

Description

Hydrogen 9-(2-carboxylatophenyl)-3-(2-methylanilino)-6-(2-methyl-4-sulphoanilino)xanthylium, monosodium salt (CI 45190)

Record provenance

Inventory reference: 31635
Imported identity: ACID VIOLET 9
Source update: 12/08/2020

European Commission CosIng source notes

Annex records for ACID VIOLET 9

Annex II Restriction reference

Entry 1335

Xanthylium, 9-(2-carboxyphenyl)-3-((2-methylphenyl)amino)-6-((2-methyl-4-sulfophenyl)amino)-, inner…

CAS: 10213-95-3 -- 6252-76-2

EC: - -- 228-377-9

Annex IV Identified ingredient

Entry 72

CI 45190 / ACID VIOLET 9

CAS: 6252-76-2

EC: 228-377-9

Key data

CAS

6252-76-2

228-377-9

Restriction

II/1335 (when used as a substance in hair dye products)

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.

#877 · ACID VIOLET 9

Records sharing a CAS or EC identity

CI 45190

Ingredients with overlapping formulation functions

ACID RED 87COLORANT, HAIR DYEING

ACID RED 92HAIR DYEING

ACID RED 95HAIR DYEING

ACID VIOLET 43HAIR DYEING

ACID YELLOW 1HAIR DYEING

ACID YELLOW 23HAIR DYEING

ACID YELLOW 23 ALUMINUM LAKEHAIR DYEING

ACID YELLOW 36HAIR 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 ACID VIOLET 9 appears in the CosIng inventory

The CosIng inventory lists ACID VIOLET 9 as a cosmetic ingredient and this page links it to 2 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.

ACID VIOLET 9 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 VIOLET 9 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 VIOLET 9 reads: "II/1335 (when used as a substance in hair dye products)". 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 VIOLET 9 carries the following function designation(s):

HAIR DYEING

CAS 6252-76-2 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 VIOLET 9

This page combines the CosIng inventory entry for ACID VIOLET 9 with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research ACID VIOLET 9 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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Tools & next steps

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