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
- food
- industrial
- pharma
Sulfan blue
CAS 129-17-9 · 100/100 · High conf.
Colorant · Dye
Concern score
100/100Critical concern based on regulatory listings.
Well researched
Why it's flagged
Ethanaminium, N-(4-((4-diethylamino)phenyl)(2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, sodium salt (Acid Blue 1; CI 42045) 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.
- commercial_presence
- consumer_product_presence
- cpdat_category:pharma|food|industrial
- definition_level:complete
- definition_type:primary
- eu_annex:II
- eu_annex:IV
- eu_cosmetic_allowed_colorant
- 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 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 4 composition records across product categories including Vehicle, Laboratory supplies, Food and drug. EPA CPDat classifies this chemical for functional uses including Dye.
- EPA CPDat observed this chemical in 4 composition records across product categories including Vehicle, Laboratory supplies, Food and drug. EPA CPDat classifies this chemical for functional uses including Dye.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Evidence
No graded sources yet for Sulfan blue. We publish evidence only once a source is linked and reviewed — this ingredient is in the catalog, but has not been assessed.
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 appears
Prevalence of Sulfan blue in our catalog (epa_cpdat).
Products
4
Brands
4
VehicleLaboratory suppliesFood and drug
Typical roles
ColorantDye
