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Chemical Datasheet
Chemical Identifiers
| CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
|
|
none
|
data unavailable
|
|
| NIOSH Pocket Guide |
International Chem Safety Card |
|
Uranium (soluble compounds, as U)
|
none
|
NFPA 704
data unavailable
General Description
A yellow rhombic radioactive crystal. Radioactive materials emit certain rays that can only be detected by instruments. Mildly chemically toxic. Unirradiated uranium is only mildly radioactive. Packages require no protective shielding. Noncombustible, but may accelerate the burning of combustible materials. Produces toxic oxides of nitrogen when involved in fires. Used to produce ceramic glazes.
Hazards
Reactivity Alerts
- Strong Oxidizing Agent
- Radioactive Material
Air & Water Reactions
Dissolves in water to form a weak solution of nitric acid, the reaction is not hazardous.
Fire Hazard
Special Hazards of Combustion Products: Toxic oxides of nitrogen formed in fires.
Behavior in Fire: Intensifies fires. When large quantities are involved, nitrate may fuse or melt; application of water may then cause extensive scattering of molten material. (USCG, 1999)
Health Hazard
Excessive inhalation of dust may cause irritation of lungs and delayed symptoms similar to those observed after ingestion. Dust irritates eyes and skin and may be absorbed through skin on prolonged exposure. Ingestion causes irritation of mouth and stomach; inflammation of kidney and liver develops 1 to 4 days after exposure. (USCG, 1999)
Reactivity Profile
Mixtures of metal/nonmetal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates; mixtures of the nitrate with phosphorus, tin (II) chloride, or other reducing agents may react explosively [Bretherick 1979. p. 108-109]. Diethyl ether and uranyl nitrate have been involved in several explosion and fire incidents [Nucl. Sci. Abs., 1976, 33], 19790 [J. Amer. Chem. Soc., 1912, 34, 1686].
Belongs to the Following Reactive Group(s)
- Nitrate and Nitrite Compounds, Inorganic
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Expanded Polymeric Absorbents
Response Recommendations
Isolation and Evacuation
No information available.
Firefighting
No information available.
Non-Fire Response
No information available.
Protective Clothing
Dust mask, gloves, goggles (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
INHALATION: remove victim to fresh air.
EYES: flush with water for at least 15 min.; see physician if irritation persists.
SKIN: wash thoroughly with soap and water.
INGESTION: administer large doses of sodium bicarbonate. (This will convert the uranium salt to the bicarbonate, which is much less toxic.) Additional treatment is symptomatic; get medical attention. (USCG, 1999)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
140.4°F
(USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
2.81
at 55.4°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point: data unavailable
Molecular Weight:
502.13
(USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH:
10 mg U/m3
; A potential occupational carcinogen.
(NIOSH, 2023)
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
| Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
| Uranyl nitrate (solid); (Bis(nitrato-O,O')dioxouranium) (10102-06-4)
|
0.99 mg/m3 |
5.5 mg/m3 |
33 mg/m3 |
| Uranyl nitrate (yellow salt) (36478-76-9)
|
0.99 mg/m3 |
5.5 mg/m3 |
33 mg/m3 |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
| Regulatory Name |
CAS Number/
313 Category Code |
EPCRA 302
EHS TPQ |
EPCRA 304
EHS RQ |
CERCLA RQ |
EPCRA 313
TRI |
RCRA
Code |
CAA 112(r)
RMP TQ |
| Uranyl nitrate |
10102-06-4 |
|
|
100 pounds |
|
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| Uranyl nitrate |
36478-76-9 |
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100 pounds |
|
|
|
(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- DINITRATODIOXOURANIUM
- URANIUM DINITRATE DIOXIDE
- URANIUM NITRATE
- URANIUM NITRATE OXIDE (U(NO3)2O2)
- URANIUM NITRATE OXIDE (UO2(NO3)2)
- URANIUM, BIS(NITRATO-O)DIOXO-, (T-4)-
- URANIUM, BIS(NITRATO-O,O')DIOXO-, (OC-6-11)-
- URANIUM, DINITRATODIOXO-
- URANYL DINITRATE
- URANYL NITRATE
- URANYL NITRATE (UO2(NO3)2)