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Chemical Datasheet
AMMONIUM NITRATE-UREA SOLUTION |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
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none
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data unavailable
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NIOSH Pocket Guide |
International Chem Safety Card |
none
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NFPA 704
General Description
Colorless aqueous solution with a slight ammonia odor. (USCG, 1999)
Hazards
Reactivity Alerts
- Explosive
- Strong Oxidizing Agent
Air & Water Reactions
Water soluble.
Fire Hazard
Behavior in Fire: Water of solution may evaporate, and remaining solids may then explode. (USCG, 1999)
Health Hazard
Liquid irritates eyes, particularly those grades that contain a little free ammonia. (USCG, 1999)
Reactivity Profile
Mixtures of metal/nonmetal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates; mixtures of nitrates with phosphorus, tin (II) chloride or other reducing agents may react explosively [Bretherick 1979 p. 108-109]. A mixture of ammonium nitrate and aluminum powder (also zinc, cadmium, copper, magnesium, lead, cobalt, nickel, bismuth, chromium, and antimony behave similarly to aluminum) can be used as an explosive. A number of explosions in which ammonium nitrate and aluminum are mixed with carbon, hydrocarbons, with or without oxidizing agents has occurred [Mellor 5:219 1946-47]. A mixture of ammonium nitrate and acetic acid ignites when warmed, especially if concentrated [Von Schwartz p. 322 1918].
Belongs to the Following Reactive Group(s)
- Amides and Imides
- Salts, Acidic
- 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
Goggles or face shield; rubber gloves. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
EYES: wash with plenty of water for 10-15 min. and rinse with a 5% boric acid solution; call a doctor.
SKIN: rinse well with water. (USCG, 1999)
Physical Properties
Chemical Formula: |
- NH4NO3 (ammonium nitrate)
- CH4N2O (urea)
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Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
32°F
(USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.327
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point:
greater than 212°F
at 760 mmHg
(USCG, 1999)
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Energy/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 |
Ammonium nitrate (6484-52-2)
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6.7 mg/m3 |
73 mg/m3 |
440 mg/m3 |
Urea (57-13-6)
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30 mg/m3 |
280 mg/m3 |
1700 mg/m3 |
(DOE, 2024)
Regulatory Information
EPA Consolidated List of Lists
No regulatory information available.
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
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RELEASE |
THEFT |
SABOTAGE |
Chemical of Interest |
CAS Number |
Min Conc |
STQ |
Security Issue |
Min Conc |
STQ |
Security Issue |
Min Conc |
STQ |
Security Issue |
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 |
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Ammonium nitrate, solid [nitrogen concentration of 23% nitrogen or greater] |
6484-52-2 |
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33.00 % |
2000 pounds |
EXP/IEDP |
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(CISA, 2007)
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- AMMONIUM NITRATE-UREA SOLUTION
- NITREX NITROGEN SOLUTIONS (NON-PRESSURE)
- SOLAR NITROGEN SOLUTIONS