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Chemical Datasheet
AMMONIUM NITRATE-SULFATE MIXTURE |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
none
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NIOSH Pocket Guide |
International Chem Safety Card |
none
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none
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NFPA 704
General Description
A gray solid, in the form of prills.
Hazards
Reactivity Alerts
- Explosive
- Strong Oxidizing Agent
Air & Water Reactions
Soluble in water.
Fire Hazard
Special Hazards of Combustion Products: Toxic and irritating oxides of nitrogen may form in fires.
Behavior in Fire: Will increase intensity of fire when in contact with combustible material. Containers may explode. (USCG, 1999)
Health Hazard
Inhalation causes irritation of nose and throat. Contact with eyes causes irritation. (USCG, 1999)
Reactivity Profile
AMMONIUM NITRATE-SULFATE MIXTURE is an oxidizing agent. Does not itself readily burn, but accelerates the burning of combustible material with which it may be contaminated. Produces toxic oxides of nitrogen during such reactions. Mixtures with alkyl esters may explode, owing to the formation of alkyl nitrates. Mixtures with phosphorus, tin(II) chloride or other reducing agents may react explosively [Bretherick 1979 p. 108-109]. Mixtures with aluminum powder (also zinc, cadmium, copper, magnesium, lead, cobalt, nickel, bismuth, chromium, and antimony) can be used as explosives. A number of explosions in which ammonium nitrate and aluminum were mixed with carbon or hydrocarbons, with or without oxidizing agents have occurred [Mellor 5:219 1946-47]. Mixtures with acetic acid ignite when warmed, especially if concentrated [Von Schwartz p. 322 1918]. Causes the decomposition of sodium hypochlorite within a few seconds [Mellor 2 Supp. 1:550 1956].
AMMONIUM SULFATE is acidic in aqueous solution. When a little ammonium sulfate is added to molten potassium nitrite, a vigorous reaction occurs attended by flame [Mellor 2:702 1946-47].
Belongs to the Following Reactive Group(s)
- 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
Excerpt from ERG Guide 140 [Oxidizers]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
LARGE SPILL: Consider initial downwind evacuation for at least 100 meters (330 feet).
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. If ammonium nitrate products are in a tank, rail car or truck and involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, initiate evacuation including emergency responders for 1600 meters (1 mile) in all directions. (ERG, 2024)
Firefighting
Excerpt from ERG Guide 140 [Oxidizers]:
SMALL FIRE: Use water. Do not use dry chemicals or foams. CO2 or Halon® may provide limited control.
LARGE FIRE: Flood fire area with water from a distance. Do not move cargo or vehicle if cargo has been exposed to heat. If it can be done safely, move undamaged containers away from the area around the fire.
FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: For ammonium nitrate products: Do not fight cargo fire. Withdraw, evacuate and isolate area for at least 1600 meters (1 mile). Treat as an explosive (ERG Guide 112). Do not enter area for 24 hours or until expert advice has been provided. Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)
Non-Fire Response
Excerpt from ERG Guide 140 [Oxidizers]:
Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Do not get water inside containers.
SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area.
SMALL LIQUID SPILL: Use a non-combustible material like vermiculite or sand to soak up the product and place into a container for later disposal.
LARGE SPILL: Dike far ahead of liquid spill for later disposal. (ERG, 2024)
Protective Clothing
Self-contained breathing apparatus must be used when fighting fires. At other times a dust mask is adequate. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
INHALATION: move to fresh air.
EYES: flush with water for 15 min. (USCG, 1999)
Physical Properties
Chemical Formula: |
- NH4NO3 (ammonium nitrate)
- (NH4)2SO4 (ammonium sulfate)
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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: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.8
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point: data unavailable
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)
No PAC information available.
Regulatory Information
EPA Consolidated List of Lists
No regulatory information available.
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
- AMMONIUM NITRATE FERTILIZERS, WITH AMMONIUM SULFATE
- AMMONIUM NITRATE FERTILIZERS, WITH AMMONIUM SULPHATE
- AMMONIUM NITRATE-SULFATE MIXTURE
- MIXED FERTILIZERS