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
- industrial
2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol]
CAS 6706-82-7 · 100/100 · High conf.
Concern score
100/100Critical concern based on regulatory listings.
High confidence
2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol] in plain language
On cosmetic ingredient lists it appears as “CI 21230”.
Also known as CI 21230 · CI 21230 /solvent yellow 29 · Solvent yellow 29
Used in cosmetics as a colourant and a hair dye. CI 21230 is classed chemically as a disazo colour.
- Colorant
- Hair dyeing
- Colourant
- Critical concern: no hazard classifications on record. It is banned in EU cosmetics.
Why it's flagged
2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol] (Solvent Yellow 29; CI 21230) 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
- Industrial
- View source →banned
EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
EUCosIngActive4 entries
- Cosmetics Regulation annex IV / ref 49.Source →
- Cosmetics Regulation annex II / ref 1352.Source →
- CI 21230 is classed chemically as a disazo colour. It conforms to the formula: Restriction: IV/49 (CI 21230) II/1352 (Solvent Yellow 29; CI 21230: when used as a substance in hair dye products)Source →
- Solvent Yellow 29 is classed chemically as a disazo colour. It conforms to the formula: Restriction: II/1352 (Solvent Yellow 29; CI 21230: when used as a substance in hair dye products)Source →
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 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 mucous membranesSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.Source →
Expert safety opinions
No expert opinion on file for 2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol]. 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 2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol] 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 2,2'-[Cyclohexylidenebis[(2-methyl-4,1-phenylene)azo]]bis[4-cyclohexylphenol] in a product composition. These are source records, not Greenveil catalog products.
Named organisations
1
Typical roles
ColorantHair dyeingColourant