Food use
Food-use source coverage is present in the current record.
The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.
- beauty
- cleaning
- industrial
CI 50420
CAS 12227-81-5 · 100/100 · High conf.
Also registered as 4 other CAS numbers
69073-21-8 · 73904-83-3 · 245669-68-5 · 8005-03-6
Concern score
100/100Critical concern based on regulatory listings.
High confidence
CI 50420 in plain language
Also known as Nigrosine · Sulfonated nigrosine color · C.I. Acid Black 2 · CI Acid black 2 · Calco nigrosine O 2P · Lurazol Deep Blue EB
Show all 13 names
Nigrosine B · Sulfonated nigrosine color; CI acid black 2 · acid black 2 · dye-nigrosin · nigrosin (black dye) · organic pigment · organic pigment/acid black 2
Used in cosmetics as a colourant. CI 50420 is classed chemically as a sulfonated nigrosine colour.
- Colorant
- Colourant
- Critical concern: no hazard classifications on record. It is banned in EU cosmetics.
Why it's flagged
Nigrosine (CI 50420) when used as a substance in hair dye products is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — banned
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Regulation
Restrictions first, then routine listings from published regulatory sources.
- EU Annex II — prohibited
- EU Annex IV — permitted colorant
- EU permitted colorant
- EU prohibited in cosmetics
- Found in consumer products
- Cleaning
- Industrial
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
EUECallowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Not to be used in products applied on the mucous membranes
- Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Not to be used in products applied on the mucous membranesSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 29 composition records across product categories including Construction and building materials, Electronics/small appliances, Arts and crafts/office supplies. EPA CPDat classifies this chemical for functional uses including Dye.
- EPA CPDat observed this chemical in 29 composition records across product categories including Construction and building materials, Electronics/small appliances, Arts and crafts/office supplies. EPA CPDat classifies this chemical for functional uses including Dye.Source →
Expert safety opinions
No expert opinion on file for CI 50420. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for CI 50420 yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
Where it has been recorded
How often EPA CPDat has listed CI 50420 in a product composition. These are source records, not Greenveil catalog products.
Source records
29
Named organisations
5
Construction and building materialsElectronics/small appliancesArts and crafts/office suppliesCleaning and safety
Typical roles
ColorantColourant