# Bismuth oxide (Bi2O3)

URL: https://app.greenveil.ai/ingredients/ingredient_dtxsid_dtxsid8046537
Categories: beauty, industrial
Functions: Opacifying
Identifier: DTXSID8046537

> Bismuth oxide (Bi2O3): Used in cosmetics as an opacifier. Bismuth Iron Oxides is the inorganic compound prepared by reacting bismuth nitrate in acidic conditions in presence of iron nitrate. EPA CPDat observed this chemical in 18 composition records across product categories including Batteries, Laboratory supplies, Raw materials. Compiled from 5 published data sources.

## Safety assessment

- Chemical concern: not yet assessed
- Is it a concern? We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.
- Rationale: EPA CPDat observed this chemical in 18 composition records across product categories including Batteries, Laboratory supplies, Raw materials.

## Regulatory status

- EU: Active — Bismuth Iron Oxides is the inorganic compound prepared by reacting bismuth nitrate in acidic conditions in presence of iron nitrate.
- US: commercial use observed — EPA CPDat observed this chemical in 18 composition records across product categories including Batteries, Laboratory supplies, Raw materials.
- US: listed in openFDA substance — openFDA substance registry classifies this ingredient as chemical.

## Expert safety opinions

- SCCS (EU Scientific Committee on Consumer Safety): no opinion on file.
- CIR (Cosmetic Ingredient Review (US expert panel)): no opinion on file.

## Data sources

- CosIng (updated 2026-09-23): https://ec.europa.eu/growth/tools-databases/cosing/details/101925
- EPA Chemical and Products Database (updated 2019-03-06): http://siri.org/msds/f2/ccf/ccfmj.html
- EPA DSSTox Identifiers (updated 2025-12-29): https://epa.figshare.com/articles/dataset/Chemistry_Dashboard_Data_DSSTox_Identifiers_Mapped_to_CAS_Numbers_and_Names/5588566
- FDA GSRS UNII (updated 2026-02-26): https://precision.fda.gov/uniisearch/
- openFDA Substance (updated 2026-05-24): https://api.fda.gov/other/substance.json?search=unii:A6I4E79QF1

_Assessed by Greenveil._