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.
SOLVENT ORANGE 1
4-(Phenylazo)resorcinol (Solvent Orange 1; CI 11920) and its salts, 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.
Research docs0Claims0Sources6Functioncolorant • DyeIdentifier2051-85-6
Concern score
100/100Critical concern based on regulatory listings.
Well researched
How we scored this
The concern value reflects this ingredient's chemical identity — its hazard profile from the published classifications and regulatory status below — not the safety of a product it appears in. A score near 40 is the baseline for ingredients with no specific signal (water scores 40 by design), so a mid-range value is not a safety verdict.
Concern score 100/100 (critical) · high confidence.
Regional restrictions
- EU — banned · Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
Where it appears
Prevalence of SOLVENT ORANGE 1 in our catalog (epa_cpdat).
Brands
2
Typical roles
colorantDyeFragrance
Catalog
Found in these products
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
Linked research
Primary documents currently linked to this ingredient record.
No linked research documents are attached to this ingredient yet.
Extracted claims
Structured claim signals pulled from linked ingredient research.
No extracted claims are attached to this ingredient yet.
Regulatory status
Published jurisdiction-level classifications and regulatory designations for this ingredient.
EU
EC
Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
Effective: 2020-08-13View source →
EU
EC
Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products.
Effective: 2020-08-13View source →
US
EPA
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, Fragrance.