Definition
US FDA substance register · UNII X8071685XT · registered name YTTRIUM OXIDE · single chemical substance
Cosmetic roles
No declared roleNOT REPORTED
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Names & identifiers
YTTRIUM OXIDEINCIYttrium oxide (Y2O3)Synonym
- CAS No.chemical registry number
- 1314-36-9
- EC No.EU chemical inventory number
- 215-233-5
- DTXSIDUS EPA chemical ID
- DTXSID5051573
- DTXCIDUS EPA compound ID
- DTXCID401012137
- IUPAC
- Yttrium oxide (2/3)
- Molecular formula
- O3Y2
- Molecular weight
- 225.809 g/mol
Measured properties
- Appearance
- CBI, Dry Powder, Other Solid · White solid insoluble in water, [Sax]
- Melting point
- 2410 °C
- Density
- 4.84 @25 °C
- Colour
- white
- Odour
- odourless
- Melting/freezing point
- &, gt, 400 ℃
- Initial boiling point and range
- &, gt, 400 ℃
- Flammability (solid, gas)
- not flammable
- Water solubility
- 0.7 ㎎/ℓ (20℃, pH: 6.8~7.1)
- Vapour density
- 5.01 g/㎤
- Relative density
- 4.85
- Auto-ignition temperature
- 400 ℃
- Molecular weight
- 225.809
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: PubChem · KOSHA safety data sheets (Korea)
Irritation and sensitisation studies
4 skin studies and 2 eye studies are on record.
Classed as low2
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 6 studies
- Classification not possible
Skin Sensitization · Screening - Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to EU Method B.6 (Skin Sensitisation) Cited as Directive 96/54/EC, B.6 - Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: 16CFR 1500-41 equivalent or similar to - Classification not possible
Skin Irritation · Screening - Category 2B
Eye Irritation · Screening - Moderate or Mild Irritation
eye irritation: in vivo · Screening · other guideline: EPA OPPTS 870.2400 (Acute eye irritation) equivalent or similar to
Source: US EPA CompTox dashboard
Related literature
- Chromium Titanium Yttrium Oxide Nanocomposites Used to Modify Carbon Paste Electrode for Simultaneous Voltammetric Study of 4‐Aminophenol and 4‐Acetamidophenol · 2026
- Yttrium oxide nanoparticles induce selective cytotoxicity, genomic instability and ROS mitochondrial P53 mediated apoptosis in human pancreatic cancer cells · 2025
- Y2O3NPs induce selective cytotoxicity, genomic instability, oxidative stress and ROS mediated mitochondrial apoptosis in human epidermoid skin A-431 Cancer cells · 2025
- Formation of yttrium oxalate phase filled by carbon clusters on the surface of yttrium oxide films · 2024
- Crosstalk suppression in germanium-on-insulator platform using subwavelength gratings for mid-infrared photonics · 2024
Linked databases 14
- Australian Industrial Chemicals Inventory (AICIS)
- EU CosIng ingredient list 2
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- NIST Chemistry WebBook
- PubChem
- Tlooto literature search 2 3 4 5
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · Korean · English · Japanese · Chinese