Ingredient Dictionary

CERIUM OXIDE

Ceric oxide is a metal oxide with formula CeO2.

How much products actually contain

No product states its amount yet.

Of the products containing it, 7 list it before the 1% line and 0 after it (usually 1% or less).

Products using this ingredient

7 of 7 confirmed · likeliest to carry enough first

Definition

Ceric oxide is a metal oxide with formula CeO2. It is used for polishing glass, in coatings for infra-red filters to prevent reflection, and as an oxidant and catalyst in organic synthesis. It is a metal oxide and a cerium molecular entity.

Source: PubChem

US FDA substance register · UNII 619G5K328Y · registered name CERIC OXIDE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Makes a clear formula opaqueOPACIFYING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name 酸化セリウム: 本品は、セリウムの酸化物であり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

CERIUM OXIDEINCI세륨옥사이드Korean label name (MFDS standard)Cerium oxide, (CeO2)Synonym酸化セリウムJapanese labelling name

CAS No.chemical registry number: 1306-38-3
EC No.EU chemical inventory number: 215-150-4
DTXSIDUS EPA chemical ID: DTXSID4040214
DTXCIDUS EPA compound ID: DTXCID801509322

IUPAC: Cerium(4+) dioxide
Molecular formula: CeO2
Molecular weight: 172.114 g/mol

Measured properties

Appearance: Dry Powder, Other Solid, Wet Solid, Large Crystals, CBI · White (pure) to pale yellow crystals, Insoluble in water, [Merck Index]
Melting point: 2600 °C
Density: 7.65 @25 °C
Melting/freezing point: 2600 ℃
Upper/lower flammability or explosive limits: - / - %
Vapour density: 5.9 ()
Relative density: 7.132 (at 23℃)
Molecular weight: 172.12

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)

What products actually use it for

What the 1 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

UV stabilizer1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

4 skin studies and 3 eye studies are on record.

Classed as low3

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 7 studies

Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
Not classified
Skin Irritation · Screening
Classification not possible
Skin Sensitization · Screening
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Not classified
Eye Irritation · Screening
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to