# Sodium sulfanilate

URL: https://app.greenveil.ai/ingredients/ingredient_cas_121_57_3
Categories: beauty, industrial
Functions: Antioxidant, Dye
Identifier: 121-57-3

> Sodium sulfanilate is used as antioxidant / dye. Greenveil chemical-concern score: 100/100 — Critical concern based on regulatory listings.. Assessed from 6 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern based on regulatory listings.
- Confidence: 4
- Rationale: 4-Aminobenzenesulfonic acid (Sulfanilic acid) 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.

## Regulatory status

- EU: banned — Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.
- US: commercial use observed — EPA CPDat observed this chemical in 3 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Antioxidant, Dye.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._