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.
- beauty
- industrial
Basic orange 31
CAS 97404-02-9 · 70/100 · High conf.
Also registered as 2 other CAS numbers
1016649-32-3 · 61901-61-9
Concern score
70/100High concern based on regulatory listings.
High confidence
Basic orange 31 in plain language
Also known as unnamed · Colipa B118 · Colorex BO31 · Flame Orange · MIP Orange 3100 · UNII-O1JIQ710E2
Show all 11 names
Vibracolor flame orange · arancio di base 31 · laranja basico 31 · naranja basica 31 · orange de base 31
Used in cosmetics as a hair dye. Basic Orange 31 is the hair colorant.
- Hair dyeing
- Colourant
- High concern: no hazard classifications on record. It is restricted in EU cosmetics.
Why it's flagged
2-[(4-Aminophenyl)azo]-1,3- dimethyl-1H-imidazolium chloride is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — restricted
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 III — restricted
- EU restricted in cosmetics
- Found in consumer products
- Industrial
- View source →restricted
EUEC
Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: (a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products Maximum concentration: (b) 1,0 % Conditions of use and warnings: (a) To be printed on the label: The mixing ratio. “ Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever…
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 →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for Basic orange 31. 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 Basic orange 31 yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EU CosIng Cosmetics Regulation Annexes
regulatory · updated 2020-12-11
- Open →
EPA Chemical and Products Database
exposure · updated 2020-02-13
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
- Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Found in these products
Cosmetic and personal-care products that list Basic orange 31 are shown first. Their ingredient lists include Basic orange 31; each product's own rating depends on its whole formula, so it is shown on the product page, not here.
