# Methyl styryl ketone

URL: https://app.greenveil.ai/ingredients/ingredient_cas_122_57_6
Categories: beauty, industrial
Functions: Flavouring and nutrient
Identifier: 122-57-6

> Methyl styryl ketone is used as flavouring and nutrient. Greenveil chemical-concern score: 100/100 — Critical concern based on regulatory listings.. Assessed from 3 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern based on regulatory listings.
- Confidence: 4
- Rationale: 4-Phenylbut-3-en-2-one (Benzylideneacetone) 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 Flavouring and nutrient.

_Assessed by Greenveil._