# Tetraethylammonium bromide

URL: https://app.greenveil.ai/ingredients/ingredient_cas_71_91_0
Categories: beauty, industrial
Functions: Catalyst
Identifier: 71-91-0

> Tetraethylammonium bromide is used as catalyst. 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: Tetrylammonium bromide (INN) 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 6 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Catalyst.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._