# Bronopol

URL: https://app.greenveil.ai/ingredients/ingredient_cas_52_51_7
Categories: beauty, cleaning, industrial
Functions: Preservative, Deodorant, Antimicrobial
Identifier: DTXSID8024652

> Bronopol: Used in cosmetics as a preservative. Greenveil chemical-concern score: 20/100 — Minor concern based on regulatory listings.. Compiled from 7 published data sources.

## Safety assessment

- Chemical concern score: 20/100 — Minor concern based on regulatory listings.
- Confidence in this assessment: High
- Is it a concern? Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.
- Rationale: Bronopol is listed in Annex V of the EU Cosmetics Regulation (EC) 1223/2009 (preservatives allowed in cosmetic products).

## Regulatory status

- EU: Active — 2-Bromo-2-Nitropropane-1,3-Diol is a substituted aliphatic diol that conforms to the formula: Restriction: V/21
- EU: Active — Cosmetics Regulation annex V / ref 21.
- EU: allowed_listed — Annex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.1% Other conditions: Avoid formation of nitrosamines
- US: commercial use observed — EPA CPDat observed this chemical in 173 composition records across product categories including Cleaning and safety, Furniture and furnishings, Specialty occupational products. EPA CPDat classifies this chemical for functional uses including Preservative, Biocide, Processing aids not otherwise specified.
- 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/28148
- EU CosIng Cosmetics Regulation Annexes (updated 2021-08-02): https://ec.europa.eu/growth/tools-databases/cosing/reference/annexes/list/V
- EPA Chemical and Products Database (updated march 20, 2017): http://msds.gp.com/msdsinternet/
- 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:6PU1E16C9W
- PubChem Live Enrichment (updated 2026-05-17): https://pubchem.ncbi.nlm.nih.gov/compound/2450

_Assessed by Greenveil._