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Chromium trioxide

CAS 1333-82-0

Also registered as 3 other CAS numbers

12324-05-9 · 12324-08-2 · 1362947-20-3

Chromium trioxide chemical structure

Concern score

Not assessed — no hazard data yet.

Chromium trioxide in plain language

What it is

Also known as Chromic trioxide · Chromium(vi) oxide · chromium (VI) trioxide · Chromium oxide (CRO3) · CHROMIUM(6+) oxide · Tris(oxido)chromium

Show all 18 names

chromium(6+);tris(oxygen(2-)) · Anhydrous chromium trioxide · Chromic acid anhydride · Chromic anhydride · Chromium oxide (Cr0.25O0.75) · Chromium oxide (Cr4O12) · Gamdzjfzmjecos-uhfffaoysa-n · chromic acid · chromium (vi) oxide · chromium (vi) oxide (1:3) · chromiumtrioxide · Chromicum acidum

What it does

We don't have a plain-language description for Chromium trioxide yet.

Recorded functional uses: Catalyst · Degradant/impurity · Passivant

Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Chromium trioxide appears in these published regulatory listings.

  • In marketed US drugs

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial
  • USEPAcommercial use observedEPA CPDat observed this chemical in 394 composition records across product categories including Laboratory supplies, Cleaning and safety, Personal care. EPA CPDat classifies this chemical for functional uses including tile body, Degradant/impurity, protective coating.
    • EPA CPDat observed this chemical in 394 composition records across product categories including Laboratory supplies, Cleaning and safety, Personal care. EPA CPDat classifies this chemical for functional uses including tile body, Degradant/impurity, protective coating.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 2 active drug products and 2 total products.
    • FDA NDC lists this ingredient in 2 active drug products and 2 total products.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Chromium trioxide. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Chromium trioxide yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated november 22, 2016

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA National Drug Code Directory

    regulatory · updated 2026-12-31

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed Chromium trioxide in a product composition. These are source records, not Greenveil catalog products.

Source records

394

Named organisations

6

Laboratory suppliesCleaning and safetyPersonal careHome maintenanceConstructionUnknown or Indeterminate

Typical roles

CatalystDegradant/impurityPassivantPassivation coating (if applicable)Passivation coating componentProtective coatingTile body
See products using Chromium trioxide →