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InventoryRef 3208506/06/2019

BASIC YELLOW 57

3-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride (CI 12719)

BASIC YELLOW 57 is linked to 1 EU annex record on this page. Inventory note: Annex III/262.

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Regulatory evidence by market

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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Restricted entry found
Open this evidence		1English and EU languages
Great BritainEvidence linked
Restricted
Open this evidence		1English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandEvidence linked
Restricted
Open this evidence		1English
ASEANEvidence linked
Restricted
Open this evidence		1English 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
IndiaEvidence linked
Restricted
Open this evidence		1English and Hindi
Saudi ArabiaEvidence linked
Restricted
Open this evidence		1Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 68391-31-1
CAS 68391-31-1PubChem CID 94631

3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride

IUPAC name
trimethyl-[3-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]phenyl]azanium chloride
Molecular formula
C19H22ClN5O
Molecular weight
371.9 g/mol
Exact mass
371.1512880 Da
Topological polar surface area
57.4 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
2
Defined stereocentres
0

Also known as

Basic Yellow 133-((4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-N,N,N-trimethylanilinium chlorideRefChem:488488Basic yellow 57trimethyl-[3-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]phenyl]azanium;chlorideBasic Yellow 19Benzenaminium, 3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-N,N,N-trimethyl-, chlorideBenzenaminium, 3-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-N,N,N-trimethyl-, chloride
11 more reported names
N,N,N-Trimethyl-3-((3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)diazenyl)benzenaminium chlorideBenzenaminium, 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethyl-, chlorideCI 12719COLIPA C10UNII-4N63359G0XNWKBFCIAPOSTKG-UHFFFAOYSA-MEINECS 269-943-55-Hydroxy-3-methyl-1-phenyl-4-(3'-trimethylammoniophenylazo)pyrazole, chloride3-((4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-N,N,- N-trimethylbenzenaminium chlorideBenzenaminium, 3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-N,N,- N-trimethyl-, chlorideN,N,N-Trimethyl-3-[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)diazenyl]anilinium chloride
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 BASIC YELLOW 57

INCI name

BASIC YELLOW 57

Description

3-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride (CI 12719)

Record provenance

Inventory reference
32085
Imported identity
BASIC YELLOW 57
Source update
06/06/2019
European Commission CosIng source notes
Annex III Restriction reference
Entry 262

BASIC YELLOW 57

CAS: 68391-31-1
EC: 269-943-5

Key data

CAS
68391-31-1
EC
269-943-5
Restriction
Annex III/262
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.

#3108 · BASIC YELLOW 57

Ingredients with overlapping formulation functions

BASIC VIOLET 4HAIR DYEING
BASIC YELLOW 11HAIR DYEING
BASIC YELLOW 28HAIR DYEING
BASIC YELLOW 40HAIR DYEING
BASIC YELLOW 87HAIR DYEING
BETA VULGARIS ROOT POWDERANTIOXIDANT, BINDING, HAIR DYEING
BIS(C13-15 ALKOXY) PG-AMODIMETHICONEHAIR CONDITIONING, HAIR DYEING
BIS-(MALEIMIDOETHOXY) ETHANEBINDING; HAIR CONDITIONING; HAIR DYEING; HAIR FIXING; HAIR WAVING OR STRAIGHTENING; OXIDISING; SURF…

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 BASIC YELLOW 57 appears in the CosIng inventory

The CosIng inventory lists BASIC YELLOW 57 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.

BASIC YELLOW 57 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

BASIC YELLOW 57 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 BASIC YELLOW 57 reads: "Annex III/262". 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, BASIC YELLOW 57 carries the following function designation(s):

CAS 68391-31-1 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 YELLOW 57

This page combines the CosIng inventory entry for BASIC YELLOW 57 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 BASIC YELLOW 57 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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