# Ethanol, 2,2'-[[4-[(4-aminophenyl)azo]phenyl]imino]bis-

URL: https://app.greenveil.ai/ingredients/ingredient_cas_20721_50_0
Categories: beauty
Functions: Dye
Identifier: 20721-50-0

> Ethanol, 2,2'-[[4-[(4-aminophenyl)azo]phenyl]imino]bis- is used as dye. Greenveil chemical-concern score: 70/100 — High concern based on regulatory listings.. Assessed from 5 sources.

## Safety assessment

- Chemical concern score: 70/100 — High concern based on regulatory listings.
- Confidence: 4
- Rationale: Ethanol, 2,2′-[[4-[(4-aminophenyl) azo]phenyl]imino]bis- is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.

## Regulatory status

- EU: restricted — 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: Hair dye substance in non-oxidative hair dye products Maximum concentration: 0,3% (of the mixture in the ratio 1:1 of 2,2' -[4-(4-aminopheny-lazo)pheny-limino]diethanol and lignosulfate)
- US: commercial use observed — EPA CPDat observed this chemical in 38 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Dye.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._