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Chemical Identifiers | Hazards | Response Recommendations | Physical Properties | Regulatory Information | Alternate Chemical Names

Chemical Identifiers

The Chemical Identifier fields include common identification numbers, the NFPA diamond, U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 57-13-6
  • 6484-52-2
none data unavailable
NFPA 704
Diamond Hazard Value Description
0 3
Blue Health 0 No hazard beyond that of ordinary combustible material.
Red Flammability 0 Will not burn under typical fire conditions.
Yellow Instability 3 Capable of detonation or explosive decomposition or explosive reaction but requires a strong initiating source or must be heated under confinement before initiation.
White Special OX Possesses oxidizing properties.
Note: NFPA ratings shown are for ammonium nitrate, CAS number 6484-52-2.
(NFPA, 2010)
NIOSH Pocket Guide International Chem Safety Card
General Description
Clear liquid consisting of urea and ammonium nitrate dissolved in aqueous ammonia. Odor of ammonia.


The Hazard fields include special hazard alerts, air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
Air & Water Reactions
Water soluble. A significant amount of heat may be generated when water is added to the mixture.
Fire Hazard
Special Hazards of Combustion Products: Heating to decomposition yields oxides of nitrogen.

Behavior in Fire: Organic and oxidizable materials can sensitize DRY ammonium nitrate to readily explodable state; can detonate if heated under confinement with high pressure. (USCG, 1999)
Health Hazard
INHALATION: Irritation of mucous membranes may result from exposure. EYES and SKIN: Irritation may result from exposure. INGESTION: Nausea, possible vomiting and diarrhea. Methemoglobinemia may occur, particularly in children under 1 year of age. (USCG, 1999)
Reactivity Profile
UREA, AMMONIUM NITRATE SOLUTION, (W/AQUA AMMONIA) is a basic solution. Reacts exothermically with acids. Can react with both oxidizing agents and reducing agents. May be subject to detonation if allowed to dry out.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below. More info about absorbents, including situations to watch out for...

Response Recommendations

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
No information available.
Fire Extinguishing Agents: Water (USCG, 1999)
Non-Fire Response
No information available.
Protective Clothing
Rubber gloves, safety glasses, clothes that minimize skin exposure. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
INHALATION: Evacuate to fresh air and give artificial resuscitation. Keep under observation for 24 hours as symptoms may be delayed.

EYES: Flush eyes with water for 15 minutes or until irritation subsides.

SKIN: Wash contaminated surface with soap and water. If irritation develops consult a physician.

INGESTION: Give milk and demulcents, induce emesis or perform gastric lavage: give fluids: observe for methemoglobinemia, particularly in infants. If needed, give methylene blue as a 1% solution intravenously, 1 to 2 mg/ kg; and if severe, consider exchange transfusion. (USCG, 1999)

Physical Properties

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds. The information in CAMEO Chemicals comes from a variety of data sources.
Chemical Formula:
  • CH4N2O (urea)
  • NH4NO3 (ammonium nitrate)
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.326 at 60.008 ° F (USCG, 1999)
Boiling Point: 225 ° F at 760 mm Hg (USCG, 1999)
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Potential: data unavailable
IDLH: data unavailable

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
Urea (57-13-6) 30 mg/m3 280 mg/m3 1700 mg/m3
Ammonium nitrate (6484-52-2) 6.7 mg/m3 73 mg/m3 440 mg/m3
(DOE, 2016)

Regulatory Information

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists and the U.S. Department of Homeland Security's Chemical Facility Anti-Terrorism Standards (see more about these data sources).

EPA Consolidated List of Lists

No regulatory information available.

DHS Chemical Facility Anti-Terrorism Standards (CFATS)

Chemical of Interest CAS Number Min Conc STQ Security
Min Conc STQ Security
Min Conc STQ Security
Ammonium nitrate [with more than 0.2 percent combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance] 6484-52-2 ACG 5000 pounds explosive ACG 400 pounds EXP/IEDP
Ammonium nitrate, solid [nitrogen concentration of 23% nitrogen or greater] 6484-52-2 33.00 % 2000 pounds EXP/IEDP

(DHS, 2007)

Alternate Chemical Names

This section provides a listing of alternate names for this chemical, including trade names and synonyms.