3D Mol Similar

URANIUM(IV) OXIDE

Iupac Name：dioxouranium

CAS No.: 1344-57-6

Molecular Weight：270.02771

Modify Date.: 2023-04-06 16:05

Introduction: URANIUM(IV) OXIDE is acrystalline (or pellet) form is used to pack nuclear fuel rods. View more+

Request For Quotation

1. Names and Identifiers

1.1 Name: URANIUM(IV) OXIDE
1.2 Synonyms: 215-700-3 Cough. Redness. Pain. EINECS 215-700-3 L70487KUZO MFCD00049692 Nuclear reference material 238UO2 A UNII:L70487KUZO UNII-L70487KUZO Uranium dioxide uranium oxide URANIUM OXIDE (233UO2)(8CI,9CI) URANIUM(4+) DIOXIDANDIIDE

1.3 CAS No.: 1344-57-6

1.4 CID: 10916

1.5 EINECS(EC#): 215-700-3

1.6 Molecular Formula: O2U (isomer)

1.7 Inchi: InChI=1S/2O.U

1.8 InChkey: FCTBKIHDJGHPPO-UHFFFAOYSA-N

1.9 Canonical Smiles: O=[U]=O

1.10 Isomers Smiles: O=[U]=O

2. Properties

2.1 Density: g/cm3

2.1 Melting point: 2500°C

2.1 Boiling point: °Cat760mmHg

2.1 Flash Point: °C

2.1 Precise Quality: 270.04100

2.1 PSA: 34.14000

2.1 logP: -0.23760

2.1 Appearance: BLACK-TO-BROWN CRYSTALS OR POWDER.

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

2.3 Water Solubility: insoluble H2O, dilute acids; soluble conc acids

3. Use and Manufacturing

3.1 Usage: URANIUM(IV) OXIDE is acrystalline (or pellet) form is used to pack nuclear fuel rods.

4. Safety and Handling

4.1 Hazard Codes: T+, N

4.1 Safety Statements: A radioactive material. It ignites spontaneously in heated air and burns brilliantly. See also URANIUM.

4.1 Packing Group: III

4.1 Hazard Class: 7

4.1 Hazard Declaration: H300+H330

4.1 RIDADR: 2912

4.1 Caution Statement: P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501

4.1 RTECS: YR4705000

4.1 Safety: 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.

4.2 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 .

4.3 Toxicity: Inorganic Compound; Uranium Compound; Pollutant; Industrial/Workplace Toxin; Synthetic Compound; Radioactive

5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Acute toxicity - Oral, Category 2

Acute toxicity - Inhalation, Category 2

Specific target organ toxicity – repeated exposure, Category 2

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 2

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word	Danger
Hazard statement(s)	H300+H330 Fatal if swallowed or if inhaled H373 May cause damage to organs through prolonged or repeated exposure H410 Very toxic to aquatic life with long lasting effects
Precautionary statement(s)
Prevention	P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P271 Use only outdoors or in a well-ventilated area. P284 [In case of inadequate ventilation] wear respiratory protection. P273 Avoid release to the environment.
Response	P301+P310 IF SWALLOWED: Immediately call a POISON CENTER/doctor/… P321 Specific treatment (see ... on this label). P330 Rinse mouth. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P310 Immediately call a POISON CENTER/doctor/… P320 Specific treatment is urgent (see ... on this label). P314 Get medical advice/attention if you feel unwell. P391 Collect spillage.
Storage	P405 Store locked up. P403+P233 Store in a well-ventilated place. Keep container tightly closed.
Disposal	P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

View all

6. Other Information

6.0 Storage features: Well closed.

6.1 Fire Hazards: Combustible if powdered.

6.2 Spillage Disposal: Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Evacuate danger area! Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Then store and dispose of according to local regulations.

6.3 Safe Storage: Well closed. Store only in original container. Cool.

6.4 Inhalation Risk: A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

6.5 Effects Of Short Term Exposure: The substance is irritating to the eyes.

6.6 Fire Prevention: NO open flames, NO sparks and NO smoking.

6.7 Exposure Prevention: PREVENT DISPERSION OF DUST! STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!

6.8 Inhalation Prevention: Avoid inhalation of dust. Use ventilation (not if powder), local exhaust or breathing protection.

6.9 Skin Prevention: Protective gloves.

6.10 Eye Pprevention: Wear safety goggles or eye protection in combination with breathing protection if powder.

6.11 First Aid

Fresh air, rest.

Remove contaminated clothes. Rinse and then wash skin with water and soap.

Rinse with plenty of water (remove contact lenses if easily possible).

6.12 Mesh Entry Terms: uranium dioxide

6.13 Symptoms

Cough.

Redness. Pain.

6.14 Manufacturing Info: Uranium oxide (UO2): ACTIVE

6.15 Chemical Properties: Black crystals. Insoluble inwater; soluble in nitric acid and concentrated sulfuric acid.

6.16 Uses: A crystalline (or pellet) form is used to pack nuclear fuel rods.

6.17 Hazard: High radiation risk. Ignites spontaneously in finely divided form.

7. Computational chemical data

Molecular Weight: 270.02771g/mol
Molecular Formula: O₂U
Compound Is Canonicalized: True
XLogP3-AA: null
Exact Mass: 270.04062
Monoisotopic Mass: 270.04062
Complexity: 18.3
Rotatable Bond Count: 0
Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 2
Topological Polar Surface Area: 34.1
Heavy Atom Count: 3
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Isotope Atom Count: 0
Covalently-Bonded Unit Count: 1
CACTVS Substructure Key Fingerprint: AAADcQAAMAAAAAAAAAAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==