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Zirconium dioxide

CAS 10377-99-8

Also registered as 19 other CAS numbers

12627-76-8 · 73649-21-5 · 112414-85-4 · 129774-17-0 · 869287-83-2 · 943230-04-4 · 943895-94-1 · 949569-08-8 · 1134791-55-1 · 1255709-69-3 · 1349696-92-9 · 1381839-91-3 · 1403239-99-5 · 1570062-08-6 · 1604798-57-3 · 1617532-81-6 · 2250057-81-7 · 2918778-29-5 · 1314-23-4

Zirconium dioxide chemical structure

Concern score

Not assessed — no hazard data yet.

Zirconium dioxide in plain language

What it is

Also known as Zirconium oxide · Zirconia · Zirconium(4+) dioxide · Aerosil VPH · C.I. Pigment White 12 · Pigment White 12

Show all 14 names

Zirconium (iv) oxide · Zirconic anhydride · Zirconium White · Zirconium oxide (ZrO2) · zirconium oxide (mfr invalid cas #7446-67-7) · zirconium oxide (pel/tlv as zr) · zirconium oxide (as zirconium) · zirconium oxide (as zr)

What it does

Used in cosmetics as an opacifier. Zirconium Dioxide is the inorganic oxide.

  • Opacifying
  • Colourant
  • Opacifier
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Zirconium dioxide appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Cleaning
  • Industrial
  • EUCosIngActiveZirconium Dioxide is the inorganic oxide that conforms to the formula Restriction: Please consider whether entry 391 of Annex II to the Cosmetics Regulation 1223/2009 is applicable. According to entry 391, Zirconium and its compounds, with the exception of the substances listed under reference number 50 in Annex III, and the zirconium lakes, pigments or salts of the colouring agents when listed in Annex IV."
    • Zirconium Dioxide is the inorganic oxide that conforms to the formula Restriction: Please consider whether entry 391 of Annex II to the Cosmetics Regulation 1223/2009 is applicable. According to entry 391, Zirconium and its compounds, with the exception of the substances listed under reference number 50 in Annex III, and the zirconium lakes, pigments or salts of the colouring agents when listed in Annex IV."Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 358 composition records across product categories including Furniture and furnishings, Construction and building materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including Opacifer, Pigment, Degradant/impurity.
    • EPA CPDat observed this chemical in 358 composition records across product categories including Furniture and furnishings, Construction and building materials, Home maintenance. EPA CPDat classifies this chemical for functional uses including Opacifer, Pigment, Degradant/impurity.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 Zirconium dioxide. 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 Zirconium dioxide yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EPA Chemical and Products Database

    exposure · updated march 23, 2017

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    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 Zirconium dioxide in a product composition. These are source records, not Greenveil catalog products.

Source records

358

Named organisations

6

Furniture and furnishingsConstruction and building materialsHome maintenanceConstructionLaboratory suppliesMedical/dental

Typical roles

OpacifyingColourantOpacifier
See products using Zirconium dioxide →