# Sodium (2-pyridylthio)-N-oxide

URL: https://app.greenveil.ai/ingredients/ingredient_cas_3811_73_2
Categories: beauty, cleaning, industrial
Functions: Biocide
Identifier: 3811-73-2

> Sodium (2-pyridylthio)-N-oxide is used as biocide. 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: Pyrithione sodium (INNM) (2) 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 20 composition records across product categories including Laboratory supplies, Cleaning products and household care, Specialty occupational products. EPA CPDat classifies this chemical for functional uses including Biocide.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

_Assessed by Greenveil._