UREA AMMONIUM NITRATE (UAN) 32%
Document type: SDS
Categories: Agriculture

Safety Data Sheet
SECTION 1 – IDENTIFICATION
Name, Address, and Telephone of the Responsible Party
Dyno Nobel LTD SDS #: 1138
6440 S. Millrock Drive, Suite 150 Date: 05/01/2025
Salt Lake City, Utah 84121 Supersedes: 09/10/2020
Phone: 801-364-4800
E-Mail: dna.healthsafety@am.dynonobel.com
www.dynonobel.com
Product Identifier
Product Form: Mixture
Product Name: Urea – Ammonium Nitrate Solution
Other Means of Identification
Synonyms:
UAN 23%, 26%, 32%; Non-Pressure Nitrogen Fertilizer Solution; Nitrogen Solution 23%, 26%, 32%; 23-0-0; 26-0-0; 32-0-
0
Intended Use of the Product
For professional use only.
Emergency Telephone Number
FOR 24 HOUR EMERGENCY, CALL CHEMTREC (USA) 800-424-9300
 CANUTEC (CANADA) 613-996-6666

SECTION 2 – HAZARD(S) IDENTIFICATION
Classification of the Substance or Mixture
Classification (GHS-US)
While this material is not considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200), this
SDS contains valuable information critical to the safe handling and proper use of the product. This SDS should be
retained and available for employees and other users of the product.

Label Elements
GHS-US Labeling
Hazard Pictograms (GHS-US) : Not applicable

Signal Word (GHS-US) : Not applicable
Hazard Statements (GHS-US) : No known significant effects or critical hazards.
Precautionary Statements (GHS-US) : Read label before use. Keep out of reach of children. If medical advice is
 needed, have product container or label at hand.
Other Hazards
Hazards Not Otherwise Classified (HNOC): None known

SECTION 3 - COMPOSITION/INFORMATION ON INGREDIENTS

Mixture
Name Product identifier % (w/w) Ingredient Classification (GHS-US)
Water (CAS No) 7732-18-5 17 - 48 Not classified

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Safety Data Sheet
Ammonium nitrate* (CAS No) 6484-52-2 24 - 46 Ox. Sol. 3, H272
 Eye Irrit. 2A, H319
Urea (CAS No) 57-13-6 28 - 37 Not classified
*The specific chemical identity and/or exact percentage of composition have been withheld as a trade secret within the
meaning of the OSHA Hazard Communication Standard [29 CFR 1910.1200].
Full text of H-phrases: see section 16

SECTION 4 - FIRST AID MEASURES
Description of First Aid Measures
General: Never give anything by mouth to an unconscious person. If you feel unwell, seek medical advice (show the label
if possible). Inhalation: Remove to fresh air and keep at rest in a position comfortable for breathing. Obtain medical attention if
breathing difficulty persists. Skin Contact: Remove/Take off immediately all contaminated clothing. Flush with plenty of water for at least 15 minutes. Seek medical advice if irritation develops or persists. Wash contaminated clothing before reuse. Eye Contact: Rinse cautiously with water for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Obtain medical attention. Ingestion: Do NOT induce vomiting. Rinse mouth. Immediately call a POISON CENTER or doctor/physician. Most Important Symptoms and Effects Both Acute and Delayed
General: May caus eye irritation. Inhalation: Dust may cause irritation to the mouth, throat, and lungs. Skin Contact: Prolonged contact with large amounts of dust may cause mechanical irritation. Eye Contact: May cause eye irritation. Symptoms may include: redness, pain, swelling, itching, burning, tearing, and
blurred vision. Ingestion: Ammonium Nitrate: Ingestion may cause methemoglobinemia.

SECTION 5 - FIRE-FIGHTING MEASURES
Extinguishing Media
Suitable Extinguishing Media: Use extinguishing media appropriate for surrounding fire. Flood with plenty of water.
Unsuitable Extinguishing Media: A heavy water stream may spread burning liquid.
Special Hazards Arising from the Substance or Mixture
Fire Hazard: Not considered flammable but may burn at high temperatures.
Explosion Hazard: Product is not explosive.
Reactivity: Hazardous reactions will not occur under normal conditions.
Advice for Firefighters
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Eye Contact: May cause eye irritation. Symptoms may include: redness, pain, swelling, itching, burning, tearing, and
blurred vision. Ingestion: Ammonium Nitrate: Ingestion may cause methemoglobinemia. Intial manifestation of methemoglobinemia is
cyanosis, characterized by navy lips, tongue and mucous membranes, with skin color being slate grey. Further
manifestation is characterized by headache, weakness, dyspnea, dizziness, stupor, respiratory distress and death due to
anoxia. If ingested, nitrates may be reduced to nitrites by bacteria in the digestive tract. Signs and symptoms of nitrite
poisoning include methemoglobinemia, nausea, dizziness, increased heart rate, hypotension, fainting and possibly shock. Large doses may cause systemic acidosis. Chronic Symptoms: None expected under normal conditions of use. Indication of Any Immediate Medical Attention and Special Treatment Needed
If you feel unwell, seek medical advice (show the label where possible). Causes methemoglobinemia – emergency
response should treat appropriately, such as by intravenous administration of methylene blue.

Safety Data Sheet
Precautionary Measures Fire: Exercise caution when fighting any chemical fire. Under fire conditions closed containers
may rupture or explode. Under fire conditions, hazardous fumes will be present.
Firefighting Instructions: Use water spray or fog for cooling exposed containers. In case of major fire and large
quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
Protection During Firefighting: Firefighters must use full bunker gear including NIOSH-approved positive pressure self-
contained breathing apparatus to protect against potential hazardous combustion or decomposition products and oxygen
deficiencies. Evacuate area and fight the fire from a maximum distance or use unmanned hose holders or monitor
nozzles. Cover pooling liquid with foam. Containers can build pressure if exposed to radiant heat; cool adjacent
containers with flooding quantities of water until well after the fire is out. Withdraw immediately from the area if there is a
rising sound from a venting safety device or discoloration of vessels, tanks, or pipelines. Be aware that burning liquid will
float on water. Notify appropriate authorities if liquid enter sewers or waterways.
Hazardous Combustion Products: Ammonia. Nitric oxide/nitrogen dioxide.
Reference to Other Sections: Refer to section 9 for flammability properties.

SECTION 7 - HANDLING AND STORAGE
Additional Hazards When Processed: Material will not burn but thermal decomposition may result in flammable/toxic
gases being formed if evaporated to near dryness. Dry residue may form explosive mixtures with organic materials. Avoid
temperatures above 100°C (212°F) which may result in evaporation, thermal decomposition or explosion. May explode by
detonation, heat or shock when evaporated to near dryness. Solution may detonate if subjected to heat and pressure. If
evaporated to dryness, acts as an oxidizing agent, supports combustion by liberating oxygen even if smothered.
Precautions for Safe Handling: Store in compliance with all Federal, State, and local regulations. Store in a well-
ventilated area, 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,

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SECTION 6 - ACCIDENTAL RELEASE MEASURES
Personal Precautions, Protective Equipment and Emergency Procedures
General Measures: Avoid all contact with skin, eyes, or clothing. Avoid breathing (vapor, mist, spray, dust).
For Non-Emergency Personnel
Protective Equipment: Use appropriate personal protection equipment (PPE).
Emergency Procedures: Evacuate unnecessary personnel.
For Emergency Personnel
Protective Equipment: Equip cleanup crew with proper protection.
Emergency Procedures: Stop leak if safe to do so. Eliminate ignition sources. Ventilate area.
Environmental Precautions
Avoid release to the environment. Prevent entry to sewers and public waters. Notify authorities if liquid enters sewers or
public waters.
Methods and Material for Containment and Cleaning Up
For Containment: Remove sources of heat or ignition. Contain spills as much as possible. Do not flush to surface water.
Spilled chemical can be used as fertilizer. Follow applicable Federal, State and local reporting requirements.
Methods for Cleaning Up: Clean up spills immediately and dispose of waste safely. Spills should be contained with
mechanical barriers. Transfer spilled material to a suitable container for disposal. Contact competent authorities after a
spill.
Reference to Other Sections
See heading 8, Exposure Controls and Personal Protection.

SECTION 8 - EXPOSURE CONTROLS/PERSONAL PROTECTION
Control Parameters
For substances listed in section 3 that are not listed here, there are no established exposure limits from the manufacturer,
supplier, importer, or the appropriate advisory agency including: ACGIH (TLV), NIOSH (REL), or OSHA (PEL).
Exposure Controls
Appropriate Engineering Controls: Ensure adequate ventilation, especially in confined areas. Emergency eye wash
fountains and safety showers should be available in the immediate vicinity of any potential exposure. Ensure all
national/local regulations are observed.
Personal Protective Equipment: Protective goggles. Gloves. Protective clothing. Boots. If ventilation is insufficient: wear
respiratory protection.

Materials for Protective Clothing: Chemically resistant materials and fabrics.
Hand Protection: Wear chemically resistant protective gloves.
Eye Protection: Chemical safety goggles.
Skin and Body Protection: Wear suitable protective clothing.
Respiratory Protection: Use a NIOSH-approved respirator or self-contained breathing apparatus whenever exposure
may exceed established Occupational Exposure Limits.
Environmental Exposure Controls: Do not allow the product to be released into the environment.
Consumer Exposure Controls: Do not eat, drink or smoke during use.

SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES
Information on Basic Physical and Chemical Properties
Physical State : Liquid
Appearance : Not available
Odor : Not available
Odor Threshold : Not available
pH : Not available
Evaporation Rate : Not available
Melting Point : Not available

SDS# #1138

Safety Data Sheet
sparks or other sources of ignition; they may evolve noxious fumes. Never heat a dried UAN solution, especially when
confined. Never combine with nitric acid.
Hygiene Measures: Handle in accordance with good industrial hygiene and safety procedures. Wash hands and other
exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
Conditions for Safe Storage, Including Any Incompatibilities
Technical Measures: Comply with applicable regulations.
Storage Conditions: Store in a dry, cool and well-ventilated place. Keep container closed when not in use. Keep/Store
away from direct sunlight, extremely high or low temperatures and incompatible materials.
Incompatible Materials: Strong acids, strong bases, strong oxidizers, nitric acid.
Specific End Use(s)
For professional use only.

Safety Data Sheet
Freezing Point : -11°C (12°F) for 32.5% and 0°C (32°F) for 40% solution
Boiling Point : 100 °C Water (212 °F)
Flash Point : Not available
Auto-ignition Temperature : Not available
Decomposition Temperature : Not available
Flammability (solid, gas) : Not available
Lower Flammable Limit : Not available
Upper Flammable Limit : Not available
Vapor Pressure : Not available
Relative Vapor Density at 20 °C : Not available
Relative Density : Not available
Specific Gravity : 1.29 – 1.33 g/cc (10.8 – 11.1 lbs/gal)
Solubility : Soluble
Partition Coefficient: N-Octanol/Water : Not available
Viscosity : Not available
Explosive properties : Product is not explosive
Explosion Data – Sensitivity to Mechanical : Not expected to present an explosion hazard due to mechanical
Impact impact
Explosion Data – Sensitivity to Static : Not expected to present an explosion hazard due to static discharge
Discharge

SECTION 10 - STABILITY AND REACTIVITY
Reactivity: Hazardous reactions will not occur under normal conditions.
Chemical Stability: Stable under recommended handling and storage conditions (see section 7).
Possibility of Hazardous Reactions: Hazardous polymerization will not occur.
Conditions to Avoid: Direct sunlight, extremely high temperatures, heat, hot surfaces, sparks, open flames, incompatible
materials, and other ignition sources.
Incompatible Materials: Strong acids, strong bases, strong oxidizers, nitric acid.
Hazardous Decomposition Products: Carbon oxides (CO, CO2). Ammonia. Nitrogen oxides.

SECTION 11 - TOXICOLOGICAL INFORMATION
Information on Toxicological Effects - Product
Acute Toxicity: Not classified
LD50 and LC50 Data: Not available
Skin Corrosion/Irritation: Not classified
Serious Eye Damage/Irritation: Causes serious eye irritation.
Respiratory or Skin Sensitization: Not classified
Germ Cell Mutagenicity: Not classified

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Safety Data Sheet
Teratogenicity: Not classified
Carcinogenicity: Not classified
Specific Target Organ Toxicity (Repeated Exposure): Not classified
Reproductive Toxicity: Not classified
Specific Target Organ Toxicity (Single Exposure): Not classified
Aspiration Hazard: Not classified
Symptoms/Injuries After Inhalation: Dust may cause severe irritation to the mouth, throat, and lungs. Symptoms/Injuries After Skin Contact: Prolonged contact with large amounts of dust may cause mechanical irritation. Symptoms/Injuries After Eye Contact: Causes serious eye irritation. Symptoms may include: redness, pain, swelling,
itching, burning, tearing, and blurred vision. Symptoms/Injuries After Ingestion: Ammonium Nitrate: Ingestion may cause methemoglobinemia. Intial manifestation
of methemoglobinemia is cyanosis, characterized by navy lips, tongue and mucous membranes, with skin color being
slate grey. Further manifestation is characterized by headache, weakness, dyspnea, dizziness, stupor, respiratory
distress and death due to anoxia. If ingested, nitrates may be reduced to nitrites by bacteria in the digestive tract. Signs
and symptoms of nitrite poisoning include methemoglobinemia, nausea, dizziness, increased heart rate, hypotension,
fainting and possibly shock. Large doses may cause systemic acidosis. Chronic Symptoms: None expected under normal conditions of use.

oglobinemia, nausea, dizziness, increased heart rate, hypotension,
fainting and possibly shock. Large doses may cause systemic acidosis. Chronic Symptoms: None expected under normal conditions of use. Information on Toxicological Effects - Ingredient(s)
LD50 and LC50 Data:
Urea (57-13-6)
LD50 Oral Rat 8471 mg/kg
Ammonium nitrate (6484-52-2)
LD50 Oral Rat 2217 mg/kg
LC50 Inhalation Rat > 88.8 mg/l/4h

SECTION 12: ECOLOGICAL INFORMATION
Toxicity Not classified

Urea (57-13-6)
LC50 Fish 1 16200 - 18300 mg/l (Exposure time: 96 h - Species: Poecilia reticulata)
EC50 Daphnia 1 3910 mg/l (Exposure time: 48 h - Species: Daphnia magna [Static])
Persistence and Degradability
Not available
Bioaccumulative Potential
Urea (57-13-6)
BCF fish 1 < 10
Log Pow -1.59 (at 25 °C)
Ammonium nitrate (6484-52-2)
BCF fish 1 (no bioaccumulation expected)
Log Pow -3.1 (at 25 °C)
Mobility in Soil
Not available
Other Information: Avoid release to the environment.

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SECTION 15 - REGULATORY INFORMATION
US Federal Regulations
 Urea – Ammonium Nitrate Solution
 SARA Section 311/312 Hazard Classes Immediate (acute) health hazard
 Urea (57-13-6)
 Listed on the United States TSCA (Toxic Substances Control Act) inventory
 Ammonium nitrate (6484-52-2)
 Listed on the United States TSCA (Toxic Substances Control Act) inventory
 Water (7732-18-5)
 Listed on the United States TSCA (Toxic Substances Control Act) inventory
US State Regulations
Ammonium nitrate (6484-52-2)
Water (7732-18-5)
Urea (57-13-6)
U.S. - Minnesota - Hazardous Substance List
U.S. - Texas - Effects Screening Levels - Long Term
U.S. - Texas - Effects Screening Levels - Short Term
Ammonium nitrate (6484-52-2)
U.S. - California - Toxic Air Contaminant List (AB 1807, AB 2728)
U.S. - Delaware - Accidental Release Prevention Regulations - Sufficient Quantities
U.S. - Delaware - Pollutant Discharge Requirements - Reportable Quantities
U.S. - Massachusetts - Oil & Hazardous Material List - Groundwater Reportable Concentration - Reporting Category 1
U.S. - Massachusetts - Oil & Hazardous Material List - Groundwater Reportable Concentration - Reporting Category 2
U.S. - Massachusetts - Oil & Hazardous Material List - Reportable Quantity
U.S. - Massachusetts - Oil & Hazardous Material List - Soil Reportable Concentration - Reporting Category 1
U.S.

g Category 2
U.S. - Massachusetts - Oil & Hazardous Material List - Reportable Quantity
U.S. - Massachusetts - Oil & Hazardous Material List - Soil Reportable Concentration - Reporting Category 1
U.S. - Massachusetts - Oil & Hazardous Material List - Soil Reportable Concentration - Reporting Category 2
RTK - U.S. - Massachusetts - Right To Know List
RTK - U.S. - New Jersey - Right to Know Hazardous Substance List
U.S. - New Jersey - Special Health Hazards Substances List
RTK - U.S. - Pennsylvania - RTK (Right to Know) - Environmental Hazard List
RTK - U.S. - Pennsylvania - RTK (Right to Know) List
U.S. - Texas - Effects Screening Levels - Long Term

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Safety Data Sheet
SECTION 13 - DISPOSAL CONSIDERATIONS
Sewage Disposal Recommendations: Do not empty into drains. Do not flush into surface water or sewer system.
Waste Disposal Recommendations: Dispose of waste material in accordance with all local, regional, national, and
international regulations.
Additional Information: Dispose through a licensed waste disposal company. Follow federal, state and local regulations.
Contaminated dirt may be spread as a fertilizer.

SECTION 14 - TRANSPORT INFORMATION
In Accordance with DOT Not regulated for transport
In Accordance with IMDG Not regulated for transport
In Accordance with IATA Not regulated for transport
In Accordance with TDG Not regulated for transport

Safety Data Sheet
U.S. - Texas - Effects Screening Levels - Short Term
Ammonium nitrate (6484-52-2)
U.S. - Massachusetts - Right To Know List
U.S. - New Jersey - Right to Know Hazardous Substance List
U.S. - Pennsylvania - RTK (Right to Know) - Environmental Hazard List
U.S. - Pennsylvania - RTK (Right to Know) List
Canadian Regulations
Urea – Ammonium Nitrate Solution
WHMIS Classification Class D Division 2 Subdivision B - Toxic material causing other toxic effects

Urea (57-13-6)
Listed on the Canadian DSL (Domestic Substances List)
WHMIS Classification Uncontrolled product according to WHMIS classification criteria
Ammonium nitrate (6484-52-2)
Listed on the Canadian DSL (Domestic Substances List)
WHMIS Classification Class C - Oxidizing Material
 Class D Division 2 Subdivision B - Toxic material causing other toxic effects
Water (7732-18-5)
Listed on the Canadian DSL (Domestic Substances List)
WHMIS Classification Uncontrolled product according to WHMIS classification criteria
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations (CPR) and
the SDS contains all of the information required by CPR.

SECTION 16: OTHER INFORMATION, INCLUDING DATE OF PREPARATION OR LAST REVISION
Revision Date : 05/01/2025
Other Information : This document has been prepared in accordance with the SDS requirements of the
 OSHA Hazard Communication Standard 29 CFR 1910.1200.
GHS Full Text Phrases:
 Eye Irrit. 2A Serious eye damage/eye irritation Category 2A
 Ox. Sol. 3 Oxidizing solids Category 3
 H272 May intensify fire; oxidizer
 H319 Causes serious eye irritation

Party Responsible for the Preparation of This Document
Dyno Nobel LTD
6440 S. Millrock Drive, Suite 150
Salt Lake City, Utah 84121
Phone: 801-364-4800

Disclaimer

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Safety Data Sheet
Dyno Nobel LTD and its subsidiaries disclaim any warranties with respect to this product, the safety or suitability thereof, the information contained
herein, or the results to be obtained, whether express or implied, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND/OR OTHER WARRANTY. The information contained herein is provided for
reference purposes only and is intended only for persons having relevant technical skills. Because conditions and manner of use are outside of our
control, the user is responsible for determining the conditions of safe use of the product. Buyers and users assume all risk, responsibility and liability
whatsoever from any and all injuries (including death), losses, or damages to persons or property arising from the use of this product or information.
Under no circumstances shall either Dyno Nobel Inc. or any of its subsidiaries be liable for special, consequential or incidental damages or for
anticipated loss of profits.

Dyno Nobel SDS

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