MSDS 鈥? UAN 32
Urea - Ammonium Nitrate Solution: Product Identification
TRADE NAME: Urea - Ammonium Nitrate Solution
SYNONYMS: UAN 32%, Non-Pressure Nitrogen Fertilizer Solution, 32% Nitrogen Solution, 32-0-
0
CHEMICAL FAMILY: Aqueous inorganic salt solution
CHEMICAL ID NO: None
CHEMICAL FORMULAS: Urea, CO(NH2)2 and Ammonium Nitrate, NH 4NO3
DOT HAZARD CLASS: None
LABEL REQUIRED: None
Urea - Ammonium Nitrate Solution: Composition
<2
INGREDIENTS CAS Wt% OSHA NIOSH UNITS
PEL1 IDLH3
NUMBER
UREA 0057-13-6 34.0-37.0 N.A. N.A. N.A. N.A.
AMMONIUM 6484-52-2 42.0-44.5 N.A. N.A. N.A. N.A.
NITRATE
WATER 7732-18-5 17.0-24.0 N.A. N.A. N.A. N.A.
1 = Permissible Exposure Limit (8-Hr. Time Weighted Average).
2 = Short Term Exposure Limit (15 Minute Exposure).
3 = Immediately Dangerous to Life and Health.
N.A. = Not Available
Urea - Ammonium Nitrate Solution: NFPA Code
1 HEALTH HAZARD (Blue):
Can cause irritation if not treated.
0 FLAMMABILITY HAZARD (Red):
Will not burn.
0 REACTIVITY HAZARD (Yellow):
Normally stable. Not reactive with water.
NONE SPECIAL NOTICE (White):
None
Urea - Ammonium Nitrate Solution:
Physical and Chemical Properties
212掳F @ 1 atmosphere
BOILING POINT:
237掳F
DECOMPOSITION
TEMPERATURE:
32掳F (minimum)
CRYSTALLIZATION
TEMPERATURE:
SOLUBILITY IN H20: <118g/100g @ 32掳F
WEIGHT: 10.8 - 11.1 lb/gal @ 60掳F
pH: 5.5-7.5
ODOR: Slight Ammonia Odor
APPEARANCE: Clear liquid
Urea - Ammonium Nitrate Solution: Fire and Explosion Data
FLASH POINT: N.A.
FLAMMABLE LIMIT Lower: N.A., Upper: N.A.
in AIR %/VOL:
AUTOIGNITION N.A.
TEMPERATURE:
EXTINGUISHING N.A. (Not Available)
MEDIA:
SPECIAL Firefighters should wear self-contained breathing apparatus and full
FIRE FIGHTING protective clothing.
PROCEDURE:
UNUSUAL FIRE OR Aqueous solutions of Urea- Ammonium Nitrate will not burn or support
EXPLOSION DATA: combustion, but will decompose into noxious, poisonous gases when
exposed to the high temperatures of a fire. The solutions may become
explosive if combined with a flammable substance and/or dried to a low
percentage of water.
Urea - Ammonium Nitrate Solution: Reactivity Data
STABILITY: Stable unless heated to decomposition.
HAZARDOUS Will not occur.
POLYMERIZATION:
CONDITIONS TO Concentrated acids, strong bases, and heat.
AVOID/
INCOMPATIBILITY
HAZARDOUS Ammonia, oxidized further to Nitric Oxide, Nitrogen Dioxide.
DECOMPOSITION
PRODUCTS:
Urea - Ammonium Nitrate Solution: Health Hazard Data
CARCINOGENICITY NTP: NO
IARC MONOGRAPHS: NO
OSHA REGULATED: NO
OCCUPATIONAL OSHA PERMISSIBLE None established for Urea - Ammonium
EXPOSURE LIMITS: EXPOSURE LIMIT (PEL): Nitrate.
ACGIH SHORT-TERM None established for Urea - Ammonium
EXPOSURE LIMIT (STEL): Nitrate
NIOSH IMMEDIATELY DANGEROUS None established for Urea - Ammonium
TO LIFE AND HEALTH (IDLH): Nitrate.
EFFECTS OF ACUTE: EYES: Dried salts or liquid may cause redness,
OVEREXPOSURE: pain and irritation to eye.
SKIN: Dried salts or liquid may irritate skin
resulting in reddening of the skin and
possible dermatitis. Frequent or prolonged
contact may promote an allergic reaction.
INHALATION: Dried salts may be irritating to mucous
membranes, respiratory tract, causing
sore throat, coughing, difficult breathing
and severe lung congestion. Delayed
reactions may result in pulmonary edema
and chemical pneumonitis.
INGESTION: Dried salts or liquid may cause gastric
irritation, nausea, abdominal spasms,
vomiting and faintness. Large doses may
cause systemic acidosis and
methemoglobinemia.
EFFECTS OF CHRONIC: None known for Ammonium Nitrate. None
OVER EXPOSURE: known for Urea.
ADDITIONAL MEDICAL AND Dried salt may aggravate preexisting dermatitis and lung
TOXICOLOGICAL INFORMATION: conditions.
Urea- Ammonium Nitrate Solution: Emergency First Aid Procedures
EYE CONTACT: Immediately flush with large amounts of water, including under the eyelids. If
discomfort persists contact a physician, preferably an Ophthalmologist. Speed
and thoroughness in rinsing eyes are important to avoid permanent injury.
SKIN CONTACT: Immediately remove contaminated clothing and shoes. Wash the affected area
with soap and flush with large amounts of water. Get medical attention if
discomfort persists.
INHALATION: Remove to fresh air. If breathing has stopped, apply artificial respiration. Keep
warm and at rest. Get immediate medical attention.
INGESTION: Do not induce vomiting. If vomiting occurs, keep head below hips to help
prevent aspiration. Get immediate medical attention. Treat for
methemoglobinemia.
Urea - Ammonium Nitrate Solution: Suggested Protection
EYE PROTECTION: UAN 32% is an aqueous salt solution and will dissolve with mucosal membrane
contact (eyes). Remove contact lenses and wear safety glasses, chemical
goggles or face shield where contact with liquid or dried salt may occur.
SKIN PROTECTION: UAN 32% is an aqueous salt solution and will dissolve with perspiration
contact. Wearing of appropriate protective clothing and gloves is suggested if
epidermal sensitivity develops.
INHALATION: Dried salt or aerosol solution will dissolve with mucosal membrane contact
(lungs). Use approved respiratory protective equipment for cleaning large spills
or upon entry into large tanks, vessels, and other designated confined space
areas or in any situations where airborne concentrations may exceed
occupational exposure limits. (15 mg/m3, dust)
VENTILATION: Provide adequate general and local exhaust ventilation to attain occupational
exposure limits, particularly in a confined space area.
Urea - Ammonium Nitrate Solution: Spill or Leak
SPILL PROCEDURES: Remove sources of heat or ignition. Clean-up spill but do not flush to surface
water. Contaminated soil can be spread as if it were fertilizer.
Consult DOT "Emergency Response Guidebook" - Guide 31.
Urea - Ammonium Nitrate Solution: Waste Disposal
PROCEDURE: Dispose of through a licensed waste disposal company. Follow federal, state
and local regulations.
Urea - Ammonium Nitrate Solution: Special Precautions and Comments
STORAGE PRECAUTIONS: Store away from incompatible materials or sources of heat and ignition. Empty
containers may contain residue and can be dangerous. Do not pressurize, cut,
weld, braze, solder, drill, grind or expose such containers to heat, flames,
sparks or other sources of ignition; they may evolve poisonous gas and cause
injury or death.
COMMENT: Never heat a dried UAN solution, especially when confined.
Never combine with Nitric Acid.
Urea - Ammonium Nitrate Solution: EPA SARA Title III Information
SECTION 311/312 HAZARD CATEGORIZATION:
ACUTE CHRONIC FIRE PRESSURE REACTIVE
X
SARA HAZARDOUS SUBSTANCES:
INGREDIENTCAS NO. % / wt. SEC. 313 Sec. 302 RQ lb. TPQ lb.
Ammonium 6484-52-2 >1.0% X
Nitrate
(Solution)
KEY: Sec. 313 = Toxic Chemicals, Section 313
Sec. 302 = Extremely Hazardous Substances (EHS), Section 302
RQ = Reportable Quantity of EHS
TPQ = Threshold Planning Quantity of EHS
Urea - Ammonium Nitrate Solution: Disclaimer
This information relates only to the specific material designated and may not be valid for such material used
in combination with any other materials or in any process. Such information is to the best of this company's
knowledge and believed accurate and reliable as of the date indicated. However, no representation, warranty
or guarantee is made as to the accuracy, reliability or completeness. It is the user's responsibility to satisfy
himself as to the suitableness and completeness of such information for his own particular use.
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