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  • industrial

Yttrium oxide

CAS 11130-29-3

Also registered as 4 other CAS numbers

1123577-09-2 · 1352121-27-7 · 2521566-60-7 · 1314-36-9

Yttrium oxide chemical structure

Concern score

Not assessed — no hazard data yet.

Yttrium oxide in plain language

What it is

Also known as Yttrium oxide (Y2O3) · Yttria · Yttrium oxide (generic) · Yttrium sesquioxide · Yttrium trioxide · Yttrium(iii) oxide

Show all 23 names

tris(oxygen(2-));bis(yttrium(3+)) · 5610ZQ · Diyttrium trioxide · Ec 215-233-5 · UNII-X8071685XT · Y2O3 · Yo 3-245 · Yttrium Oxydatum · Yttrium oxide (YO1.5) · Yttrium oxide grade C · Yttrium(3+) oxide · oxygen(2-);yttrium(3+) · ytrium oxide · yttrium oxide (part of phosphor powder) · yttrium oxide (pel/tlv as y) · ytrium oxide (as yttrium) · yttrium oxide (as yttrium)

What it does

We don't have a plain-language description for Yttrium oxide yet.

Recorded functional uses: Not reported

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. Yttrium oxide appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 47 composition records across product categories including Laboratory supplies, Raw materials.
    • EPA CPDat observed this chemical in 47 composition records across product categories including Laboratory supplies, Raw materials.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 Yttrium oxide. 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 Yttrium oxide 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

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated 2019-02-27

    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 →

  • 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 Yttrium oxide in a product composition. These are source records, not Greenveil catalog products.

Source records

47

Laboratory suppliesRaw materials

Typical roles

Not reported
See products using Yttrium oxide →