Is C.I. Solvent Red 23 safe?

beauty
food
industrial
pharma

C.I. Solvent Red 23

CAS 85-86-9 · 100/100 · High conf.

Colorant · Dye · Fragrance

Concern score

100/100Critical concern based on regulatory listings.

Well researched

Why it's flagged

1-((4-Phenylazo)phenylazo)-2-naphthol (Solvent Red 23; CI 26100) 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:beauty|pharma|food|industrial
definition_level:complete
definition_type:primary
eu_annex:II
eu_annex:IV
eu_cosmetic_allowed_colorant

EUEC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
banned
View 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 Conditions of use and warnings: Purity criteria: anilin
- 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 membranes Conditions of use and warnings: Purity criteria: anilinSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 25 composition records across product categories including Laboratory supplies, Food and drug, Personal care. EPA CPDat classifies this chemical for functional uses including Dye, Fragrance.
- EPA CPDat observed this chemical in 25 composition records across product categories including Laboratory supplies, Food and drug, Personal care. EPA CPDat classifies this chemical for functional uses including Dye, Fragrance.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 C.I. Solvent Red 23. 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.

Food use

Food-use source coverage is present in the current record.

Good fit

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.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it appears

Prevalence of C.I. Solvent Red 23 in our catalog (epa_cpdat).

Products

Brands

Laboratory suppliesFood and drugPersonal careConstruction

Typical roles

ColorantDyeFragrance

See products using C.I. Solvent Red 23 →

Catalog

Found in these products

11 products

Why it's flagged

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.