# Styrene oxide

URL: https://app.greenveil.ai/ingredients/ingredient_cas_96_09_3
Categories: beauty, industrial
Functions: Fragrance, No specific technical function
Identifier: 96-09-3

> Styrene oxide is used as fragrance / no specific technical function. Greenveil chemical-concern score: 100/100 — Critical concern driven by cmr.. Assessed from 6 sources.

## Safety assessment

- Chemical concern score: 100/100 — Critical concern driven by cmr.
- Confidence: 4
- Rationale: (Epoxyethyl)benzene (Styrene oxide) 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. CMR: Carcinogenic Cat. 1B()
- US: commercial use observed — EPA CPDat observed this chemical in 2 composition records across product categories including Laboratory supplies, Construction and building materials. EPA CPDat classifies this chemical for functional uses including No specific technical function, Fragrance.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._