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| CAS No.: | 1344-57-6 |
|---|---|
| Name: | Uranyl(VI) chloride |
| Article Data: | 9 |
| Molecular Structure: | |
|
|
|
| Formula: | O2U |
| Molecular Weight: | 270.028 |
| Synonyms: | C.I. 77915;Urania; Urania (UO2); Uranium dioxide; Uranium oxide; Uranium(4+) dioxide;Uranium(IV) oxide; g-Uranium dioxide |
| EINECS: | 215-700-3 |
| Density: | g/cm3 |
| Melting Point: | 2500oC |
| Boiling Point: | °Cat760mmHg |
| Flash Point: | °C |
| Hazard Symbols: | High radiation risk. Ignites spontaneously in finely divided form. |
| Risk Codes: | R26/28; R33; R51/53 |
| Safety: | A radioactive material. It ignites spontaneously in heated air and burns brilliantly. See also URANIUM. |
| PSA: | 34.14000 |
| LogP: | -0.23760 |
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carbon monoxide
A
- 1344-57-6
uranium dioxide
B
- 12035-97-1
uranium monoxide
C
- 151265-41-7
CUO(CO)
D
- 318953-41-2
UO2CO
E
- 12069-98-6
CUO
| Conditions | Yield |
|---|---|
| In solid matrix codeposition of U atoms, Ar and CO onto a cold substrate at 10 K;; not isolated; detn. by IR spectroscopy;; |
- 124-38-9
carbon dioxide
A
- 1344-57-6
uranium dioxide
B
- 12035-97-1
uranium monoxide
C
- 151269-72-6
OUCO
D
- 318953-41-2
UO2CO
E
- 151269-73-7
OU(CO)2
| Conditions | Yield |
|---|---|
| In solid matrix byproducts: CO; codeposition of U atoms, Ar and CO2 onto a cold substrate at 10 K;; not isolated; detn. by IR spectroscopy;; |
| Conditions | Yield |
|---|---|
| In benzene-d6 at 20℃; for 1h; Inert atmosphere; |
| Conditions | Yield |
|---|---|
| In benzene-d6 at 20℃; for 0.5h; Inert atmosphere; |
| Conditions | Yield |
|---|---|
| In benzene-d6 at 20℃; for 12h; Inert atmosphere; |
| Conditions | Yield |
|---|---|
| In benzene-d6 at 20℃; for 1h; Inert atmosphere; |
| Conditions | Yield |
|---|---|
| In benzene-d6 at 20℃; for 12h; Inert atmosphere; |
| Conditions | Yield |
|---|---|
| In benzene-d6 at 20℃; for 16h; Inert atmosphere; |
- 1344-57-6
uranium dioxide
| Conditions | Yield |
|---|---|
| at 650℃; for 18h; Inert atmosphere; |
| Conditions | Yield |
|---|---|
| at 160℃; for 30h; Time; Autoclave; High pressure; |
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Chemistry
IUPAC Name: Dioxouranium
CAS: 1344-57-6
EINECS: 215-700-3
Following is the Molecular Structure of Uranium(iv) oxide (1344-57-6):
SMILES: O=[U]=O
InChI: InChI=1/2O.U/rO2U/c1-3-2
InChIKey: FCTBKIHDJGHPPO-YEMCAWSEAK
Std.InChI: InChI=1S/2O.U
Std.InChIKey: FCTBKIHDJGHPPO-UHFFFAOYSA-N
Molecular Formula: O2U
Molecular Weight: 270.03
Melting Point: 2865℃
Density: 10.97g/cm3
Uses
Uranium(iv) oxide (1344-57-6) is used mainly as nuclear fuel,specifically as UO2 or as a mixture of UO2 and PuO2 ( Plutonium dioxide ) called a mixed oxide (MOX fuel) for fuel rods in nuclear reactors.
Safety Profile
Hazard Codes: 
T+ Very Toxic, 
N Dangerous for the environment.
Risk Statements: 26/28-33-51/53
R26/28: Very Toxic by inhalation and if swallowed.
R33: Danger of cumulative effects.
R51/53: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 20/21-45-61
S20/21: When using, do not eat, drink or smoke.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible).
S61: Avoid release to the environment. Refer to special instructions safety data sheet.
RIDADR: 2912
HazardClass: 7
PackingGroup: III
A radioactive material. It ignites spontaneously in heated air and burns brilliantly.
Specification
Uranium(iv) oxide (1344-57-6) also can be called for Uranium dioxide ; Uranium(IV) oxide ; Uranium oxide brown-black ; Uranium oxide ; UO2 ; Uranium oxide(UO2) ; Uranium(4) oxide,red ; Uraniumoxide(UO2) . Uranium(iv) oxide (1344-57-6) is an oxide of Uranium ,and is a black, radioactive, crystalline powder that naturally occurs in the mineral Uraninite . Uranium(iv) oxide (1344-57-6) is a semiconductor material. Its band gap is about 1.3 eV, which lies between the band gap for Silicon and Gallium arsenide , near the optimum for efficiency vs band gap curve for absorption of solar radiation, suggesting its possible use for very efficient solar cells based on Schottky diode structure; it also absorbs at five different wavelengths, including infrared, further enhancing its efficiency. Its intrinsic conductivity at room temperature is about the same as of single crystal Silicon .