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ChemicalBook > Product Catalog >Inorganic chemistry >Oxides and peroxides >Metal oxide >URANIUM(IV) OXIDE

URANIUM(IV) OXIDE

URANIUM(IV) OXIDE Structure
CAS No.
1344-57-6
Chemical Name:
URANIUM(IV) OXIDE
Synonyms
UO2;Uranyl(VI);ioxouranium;dioxouranium;uranous oxide;URANIUM OXIDE;diketouranium;URANIUM DIOXIDE;Uranium(Ⅳ)oxide;URANIUM(IV) OXIDE
CBNumber:
CB2440097
Molecular Formula:
O2U
Molecular Weight:
270.02771
MOL File:
1344-57-6.mol
Modify Date:
2024/8/28 13:53:22
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URANIUM(IV) OXIDE Properties

Melting point 2500°C
Density 10,96 g/cm3
solubility insoluble in H2O, dilute acid solutions; soluble in conc acid solutions
form brown cubic crystals
color brown cubic crystals, crystalline
Resistivity 3.8 × 10*10 (ρ/μΩ.cm)
Water Solubility insoluble H2O, dilute acids; soluble conc acids [MER06]
Crystal Structure Cubic
crystal system Cube
Space group Fm3m
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.545810.545810.545819090900.1626
EPA Substance Registry System Uranium oxide (UO2) (1344-57-6)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS08,GHS09,GHS06
Signal word  Danger
Hazard statements  H410-H373-H300+H330
Precautionary statements  P260-P314-P501-P273-P391-P501
RIDADR  2912
HazardClass  7
PackingGroup  III
HS Code  28441000

URANIUM(IV) OXIDE Chemical Properties,Uses,Production

Description

Uranium dioxide, also known as yellow cake, has a molecular formula of UO2. It is a black crystal that is insoluble in water. It is a high radiation risk and ignites spontaneously in finely divided form. It is used to pack nuclear fuel rods for nuclear reactors.

Chemical Properties

URANIUM(IV) OXIDE is black crystals. Insoluble inwater; soluble in nitric acid and concentrated sulfuric acid.

Physical properties

Brown to black powder or cubic crystals; density 10.97 g/cm3; Mohs hardness 5.5; melts at 2,827°C; insoluble in water and dilute acids; soluble in concentrated acids.

Uses

URANIUM(IV) OXIDE is a crystalline (or pellet) form is used to pack nuclear fuel rods.

Uses

Used in nuclear power reactors as nuclear-fuel-sintered element containing either natural or enriched uranium.

Preparation

Uranium dioxide occurs in mineral uraninite. Purified oxide may be obtained from uraninite after purification. The commercial material, however, also is recovered from other uranium sources. Uranium dioxide is obtained as an intermediate during production of uranium metal (See Uranium). Uranyl nitrate, UO2(NO3)2, obtained from digesting the mineral uraninite or pitchblende with concentrated nitric acid and separated by solvent extraction, is reduced with hydrogen at high temperatures to yield the dioxide.

Hazard

High radiation risk. Ignites spontaneously in finely divided form.

URANIUM(IV) OXIDE Preparation Products And Raw materials

Raw materials

Preparation Products

URANIUM(IV) OXIDE Suppliers

Global( 24)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
Henan Tianfu Chemical Co.,Ltd. +86-0371-55170693 +86-19937530512 China 21661 55 Inquiry
Dorne Chemical Technology co. LTD +86-86-13583358881 +8618560316533 China 3126 58 Inquiry
Shaanxi Didu New Materials Co. Ltd +86-89586680 +86-13289823923 China 8672 58 Inquiry
GIHI CHEMICALS CO.,LIMITED +8618058761490 China 50003 58 Inquiry
Aithaca Chemical Corp. (516) 229-2330 United States 1684 30 Inquiry
MATERION Inc. 800 327 1355 United States 1079 74 Inquiry
Pfaltz & Bauer, Inc. (800) 225-5172 United States 6830 72 Inquiry
D.F. Goldsmith Chemical & Metal Corp. 847 869-7800 United States 793 66 Inquiry
ABSCO Ltd +44-1440-709709 United Kingdom 911 66 Inquiry
Structure Probe, Inc. 1-(800)-2424-SPI United States 269 82 Inquiry
Supplier Advantage
Henan Tianfu Chemical Co.,Ltd. 55
Dorne Chemical Technology co. LTD 58
Shaanxi Didu New Materials Co. Ltd 58
GIHI CHEMICALS CO.,LIMITED 58
Aithaca Chemical Corp. 30
MATERION Inc. 74
Pfaltz & Bauer, Inc. 72
D.F. Goldsmith Chemical & Metal Corp. 66
ABSCO Ltd 66
Structure Probe, Inc. 82

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