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.
Sodium 4-[(2-Hydroxy-1-naphthyl)azo]naphthalenesulphonate is listed in Annex IV of the EU Cosmetics Regulation (EC) 1223/2009 (colorants allowed in cosmetic products).
Concern score
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 25/100 (minor) · high confidence.
Prevalence of C.I. Acid Red 88, monosodium salt in our catalog (epa_cpdat).
Brands
2
Typical roles
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.
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
No fragrance-linked caution surfaced in the current profile.
Primary documents currently linked to this ingredient record.
Structured claim signals pulled from linked ingredient research.
Published jurisdiction-level classifications and regulatory designations for this ingredient.
EU
EC
Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Rinse-off products
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.
US
FDA
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
The published evidence profile currently shaping this ingredient record.
openFDA substance registry classifies this ingredient as chemical.