# ACID BLACK 52

URL: https://app.greenveil.ai/ingredients/ingredient_cas_16279_54_2
Categories: beauty, industrial
Functions: Dye
Identifier: 16279-54-2

> ACID BLACK 52 is used as dye. Greenveil chemical-concern score: 100/100 — Critical concern based on regulatory listings.. Assessed from 5 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern based on regulatory listings.
- Confidence: 4
- Rationale: 3-Hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulphonic 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 0 composition records across product categories including unclassified products. 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._