Ammonium nitrate, liquid (hot concentrated solution)

  • Nitric acid, ammonium salt
Formula
NH4NO3
Structure
Description
White crystals, odorless, hygroscopic, deliquescent.
Uses
In freezing mixtures, manufacture of matches & pyrotechnics.

Registry Numbers and Inventories.
CAS
6484-52-2
EC (EINECS/ELINCS)
229-347-8
EC Class
oxidizing
S 15 16 41
RTECS
BR9050000
RTECS class
Other
UN (DOT)
2428
Merck
12,567
Beilstein/Gmelin
1123614 (G)
EPA OPP
76101
Swiss Giftliste 1
G-5311
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
H4N2O3
Formula mass
80.04
Melting point, °C
169
Boiling point, °C
210
Decomposition point, °C
210
Density
1.73 g/cm3
Solubility in water
1920 g/L

Hazards and Protection.
Storage
Keep away from sources of ignition. Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from acids. Keep away from reducing agents. Do not store near alkaline substances.
Handling
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid contact with clothing and other combustible materials. Avoid ingestion and inhalation. Keep away from clothing and other combustible materials. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition.
Stability
Stable under normal shipping and handling conditions. However, may decompose if heated.
Incompatibilities
Incompatible with acetic acid, aluminum, ammonium chloride, antimony bismuth, cadmium, carbon, chlorides, chromium cobalt, contaminat, copper, lead, magnesium, magnesium, copper sulfate(anhydrous) potassium chlorate and water, powdered metals, nickel, organic matter, phosphorus, potassium and ammonium sulfate, sodium, sodium hypochlorite, sodium perchlorate, sodium-potassium alloy and ammonium sulfate, sulfur, and zinc.
Decomposition
Oxides of nitrogen.

Fire.
Flash Point,°C
210
Fire fighting
Dangerously explosive. Do not fight fires in a cargo of explosives. Evacuate area and let burn.
Fire potential
Slightly flammable. Oxidizing, supports combustion.
Hazards
MAY EXPLODE AND THROW FRAGMENTS 1600 meters (1 MILE) OR MORE IF FIRE REACHES CARGO.
Combustion products
Decomposes, giving off extremely toxic oxides of nitrogen.
Health
0
 
Flammability
0
 
 
Reactivity
3
 
 
Special
O

Health.
Poison_Class
4
Exposure effects
May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death. May cause digestive tract disturbances.
   Ingestion
Ingestion of large amounts may cause gastrointestinal irritation. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown colored blood.
   Inhalation
May cause methemoglobinemia, cyanosis, convulsions, tachycardia, dyspnea, and death. May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown blood. Inhalation can cause systemic acidosis and methemoglobinemia.
   Skin
May cause skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2428
Response guide
Hazard class
5.1
Packing Group
III
 
USCG CHRIS Code
AMN
 
HS Code
3102 30 90
 
Std. Transport #
4901546
 
IMO Chemical Code
#
IMO Pollution Category
D
IMO Hazard code
S