# (+/-)-1,2-Propylene oxide

URL: https://app.greenveil.ai/ingredients/ingredient_cas_75_56_9
Categories: beauty, cleaning, industrial
Functions: polyurethanes>polyols, Viscosity modifier
Identifier: 75-56-9

> (+/-)-1,2-Propylene oxide is used as polyurethanes>polyols / viscosity modifier. 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: Methyloxirane (Propylene 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(),Mutagenic Cat. 1B()
- US: commercial use observed — EPA CPDat observed this chemical in 162 composition records across product categories including Laboratory supplies, Specialty occupational products, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, polyurethanes>polyols.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._