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InventoryRef 3274014/08/2020

CI 21100

2,2'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutyramide]

CI 21100 is linked to 2 EU annex records on this page. Inventory note: IV/47 (CI 21100) II/1351 (Pigment Yellow 13; CI 21100: 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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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Prohibited entry found
Open this evidence		2English and EU languages
Great BritainSource mapped
Official source mapped; ingredient rule not imported
0English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandSource mapped
Official source mapped; ingredient rule not imported
0English
ASEANSource mapped
Official source mapped; ingredient rule not imported
0English 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
BrazilEvidence linked
Prohibited
Open this evidence		1Portuguese with INCI crosswalks
IndiaSource mapped
Official source mapped; ingredient rule not imported
0English and Hindi
Saudi ArabiaSource mapped
Official source mapped; ingredient rule not imported
0Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 5102-83-0
CAS 5102-83-0PubChem CID 73462

Diarylide Yellow

IUPAC name
2-[[2-chloro-4-[3-chloro-4-[[1-(2,4-dimethylanilino)-1,3-dioxobutan-2-yl]diazenyl]phenyl]phenyl]diazenyl]-N-(2,4-dimethylphenyl)-3-oxobutanamide
Molecular formula
C36H34Cl2N6O4
Molecular weight
685.6 g/mol
Exact mass
684.2018590 Da
XLogP3
9.5
Topological polar surface area
142.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
8
Covalent units
1
Defined stereocentres
0

Also known as

Monolite Yellow GLHelio Fast Yellow GRFLight Yellow JBRKromon Yellow GXRVynamon Yellow GREBenzidine Yellow GEHostaperm Yellow GRPermanent Yellow GR
16 more reported names
Irgalite Yellow BAWMonolite Yellow GLAVynamon Yellow GRESIrgaplast Yellow IRSIrgalite Yellow BAWXElkon Fast Yellow GRVulcan Fast Yellow GRHelio Fast Yellow GRNLatexol Fast Yellow JRRubber Fast Yellow GRAVulcan Fast Yellow GRAVulcan Fast Yellow GRNSymuler Fast Yellow GRFMonolite Fast Yellow GLVRecolite Fast Yellow BLFRecolite Fast Yellow BLT
Open full PubChem recordPubChem annotations3D structure image

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 CI 21100

INCI name

CI 21100

Description

2,2'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutyramide]

Record provenance

Inventory reference
32740
Imported identity
CI 21100
Source update
14/08/2020
European Commission CosIng source notes
Annex IV Restriction reference
Entry 47

CI 21100

CAS: 5102-83-0
EC: 225-822-9

Key data

CAS
5102-83-0
EC
225-822-9
Restriction
IV/47 (CI 21100) II/1351 (Pigment Yellow 13; CI 21100: when used as a substance in hair dye products)
Function
COLORANT
Exclusively or mainly intended to colour the cosmetic product, the body as a whole or certain parts thereof, by absorption or reflection of visible light. All authorised colorants are substances in the positive list of Annex IV to the Cosmetics Regulation 1223/2009.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#6384 · CI 21100

Records sharing a CAS or EC identity

PIGMENT YELLOW 13

Ingredients with overlapping formulation functions

CI 19140COLORANT, HAIR DYEING
CI 20040COLORANT
CI 20170COLORANT, HAIR DYEING
CI 20470COLORANT
CI 21108COLORANT
CI 21230COLORANT
CI 24790COLORANT
CI 26100COLORANT

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 CI 21100 appears in the CosIng inventory

The CosIng inventory lists CI 21100 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.

CI 21100 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

CI 21100 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 CI 21100 reads: "IV/47 (CI 21100) II/1351 (Pigment Yellow 13; CI 21100: 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, CI 21100 carries the following function designation(s):

CAS 5102-83-0 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 CI 21100

This page combines the CosIng inventory entry for CI 21100 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 CI 21100 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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