ChemicalBook CAS DataBase List 1306-38-3

1306-38-3

Name	Cerium dioxide
CAS	1306-38-3
EINECS(EC#)	215-150-4
Molecular Formula	CeO2
MDL Number	MFCD00010927
Molecular Weight	172.11
MOL File	1306-38-3.mol

Chemical Properties

Appearance	white to faintly yellow powder
Melting point	2600°C
density	7.13 g/mL at 25 °C(lit.)
storage temp.	Storage temperature: no restrictions.
solubility	insoluble in H2O, dilute acid solutions
form	powder
color	Yellow
Specific Gravity	7.132
Odor	Odorless
Stability:	Stable, but absorbs carbon dioxide from the air.
Resistivity	10*10 (ρ/μΩ.cm)
Water Solubility	insoluble
Crystal Structure	Cubic
Merck	14,1989
InChIKey	CETPSERCERDGAM-UHFFFAOYSA-N
CAS DataBase Reference	1306-38-3(CAS DataBase Reference)
NIST Chemistry Reference	Cerium dioxide(1306-38-3)
EPA Substance Registry System	1306-38-3(EPA Substance)

Safety Data

Hazard Codes	Xi,Xn
Risk Statements	R36:Irritating to the eyes. R22:Harmful if swallowed. less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S24/25:Avoid contact with skin and eyes . S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) . less more
WGK Germany	3
RTECS	FK6310000
TSCA	Yes
HazardClass	8
HS Code	28461000
Hazardous Substances Data	1306-38-3(Hazardous Substances Data)
Toxicity	LD50 orally in rats: >5.0 g/kg (Lambert) less more

Raw materials And Preparation Products

Hazard Information

Chemical Properties

Cerium dioxide is white to faintly yellow powder. Relative density 7.132. Melting point 2600°C. Insoluble in water, not easily soluble in inorganic acid. Need to add reducing agent to help dissolve (such as hydroxylamine reducing agent).

Physical properties

White powder in pure form; technical grade material is pale yellow; presence of other lanthanide elements as impurities may impart reddish color; cubic crystal; density 7.65 g/cm³; melts at 2,400°C; insoluble in water.

Application

Cerium(IV) oxide is used in ceramics, and to polish glass and stones. It is applied as a solid electrolyte in fuel cells. It can also be employed as a co-catalyst in a number of reactions. It is also used as an antioxidant and to generate hydrogen through water splitting. It is used as a high-temperature hydrocarbon oxidation catalyst in self-cleaning ovens. It can be used in infrared filters, incandescent mantles and sunscreens in combination with other materials. It finds use as a catalyst support and to sensitize photosensitive glass.

Definition

Cerium dioxide 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.

Preparation

Cerium(IV) oxide may be obtained by heating cerium oxalate, carbonate or other salts at elevated temperatures:
Ce₂(C₂O₄)₃ + 2O₂ → 2CeO₂ + 6CO₂

General Description

Cerium(IV) oxide (CeO₂) is a class of rare earth materials which can be synthesized by a variety of methods which include thermal hydrolysis and hydrothermal method. Its properties include a high refractive index, and dielectric constant.

Flammability and Explosibility

Notclassified

Material Safety Data Sheet(MSDS)

Questions And Answer

Spectrum Detail

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1306-38-3

Chemical Properties

Safety Data

Raw materials And Preparation Products

Raw materials

Preparation Products

Hazard Information

Chemical Properties

Physical properties

Application

Definition

Preparation

General Description

Flammability and Explosibility

Material Safety Data Sheet(MSDS)

Questions And Answer

Description

Uses

References

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

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