REDUCED BIURET UREA (RBU)
Document type: SDS
Categories: Industrial Chemicals

Safety Data Sheet
SECTION 1 – IDENTIFICATION
Name, Address, and Telephone of the Responsible Party
Dyno Nobel LTD SDS #: 1132
6440 S. Millrock Drive, Suite 150 Date: 05/01/2025
Salt Lake City, Utah 84121 Supersedes: 07/20/2020
Phone: 801-364-4800
E-Mail: dna.healthsafety@am.dynonobel.com
www.dynonobel.com
Product Identifier
Product Form: Solid
Product Name: Urea Feed

Other Means of Identification
Trade Name(s): Urea - RBU™, Urea Fertilizer
Synonyms:
 Urea Feed
 Urea, Prilled, 46-0-0

Product Class: Urea
Intended Use of the Product
Ingredient for animal feed and fertilizer

Uses advised against: Not to be used as an ingredient for human food. Not approved for human use.
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
 needed, have product container or label at hand.

Other Hazards

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Most Important Symptoms and Effects Both Acute and Delayed
General: May cause skin irritation and eye irritation.
Inhalation: May cause respiratory irritation.
Skin Contact: May cause skin irritation.
Eye Contact: May cause eye irritation.
Ingestion: Do not induce vomiting. Get medical attention immediately.
Chronic Symptoms: None expected under normal conditions of use.
Indication of Any Immediate Medical Attention and Special Treatment Needed
If exposed and feeling unwell, seek medical advice (show the label where possible).

SECTION 5 - FIRE-FIGHTING MEASURES
Extinguishing Media
Suitable Extinguishing Media: Use extinguishing media appropriate for surrounding fire.
Unsuitable Extinguishing Media: Do not use a heavy water stream. Use of heavy stream of water may spread fire.
Special Hazards Arising from the Substance or Mixture

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Safety Data Sheet
Hazards Not Otherwise Classified (HNOC): None known
Unknown Acute Toxicity: None known

SECTION 3 - COMPOSITION/INFORMATION ON INGREDIENTS

Mixture
Name Product identifier % (w/w) Ingredient Classification (GHS-US)
Urea (CAS No) 57-13-6 98 - 99 Not Classified
Methylenediurea (CAS No) 68611-64-3 0.3 – 0.5 Aquatic Chronic 3, H412
Biuret (CAS No) 108-19-0 0.4 – 0.5 Not Classified
Ingredients, other than those mentioned above, as used in this product are not hazardous as defined under current
Department of Labor regulations or are present in deminimus concentrations (less than 0.1% for carcinogens, less
than 1.0% for other hazardous materials).

SECTION 4 - FIRST AID MEASURES
Description of First Aid Measures
Eye Contact: Immediately flush with large amounts of water, including under the eyelids. If pain or irritation persists,
seek medical attention.
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 contaminated clothing. Rinse immediately with plenty of water. Obtain medical attention if
irritation develops or persists. Wash contaminated clothing before reuse.
Ingestion: Do not induce vomiting. Get medical attention immediately.

SECTION 6 - ACCIDENTAL RELEASE MEASURES
Personal Precautions, Protective Equipment and Emergency Procedures
General Measures: Avoid all contact with skin, eyes, or clothing. Avoid breathing 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: Ventilate area.
Environmental Precautions
Prevent entry to sewers and public waters.
Methods and Material for Containment and Cleaning Up
For Containment: Contain any spills to prevent migration and entry into sewers or streams.
Methods for Cleaning Up: Clean up spills immediately and dispose of waste safely. Transfer spilled material to a
suitable container for disposal. Contact competent authorities as appropriate after a spill.
Reference to Other Sections
See heading 8, Exposure Controls and Personal Protection

SECTION 7 - HANDLING AND STORAGE
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 if exposed to hot
work conditions. Do not pressurize, cut, weld, braze, solder, drill, grind or expose contaminated containers to heat,
flames, sparks or other sources of ignition; as they may evolve noxious fumes.

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
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Safety Data Sheet
Fire Hazard: Not considered combustible but may decompose at high temperatures.
Explosion Hazard: Product is not explosive.
Reactivity: Hazardous reactions will not occur under normal conditions.

Advice for Firefighters
Precautionary Measures Fire: Promptly isolate the scene by removing all persons from the vicinity of the incident if
there is a fire. Move containers from fire area if this can be done without risk. Use water spray to keep fire-exposed
containers cool. Collect contaminated fire-fighting water separately. It must not enter the sewage system. Exercise
caution when fighting any chemical fire.
Firefighting Instructions: Urea will not burn or support combustion but will decompose into noxious, poisonous gas
when exposed to the high temperatures of a fire. Firefighters should wear self-contained breathing apparatus and full
protective clothing.
Protection During Firefighting: Do not enter fire area without proper protective equipment, including respiratory
protection.
Hazardous Combustion Products: Ammonia and Nitrogen Oxides (Nitric Oxide and Nitrogen Dioxide).
Reference to Other Sections: Refer to section 9 for flammability properties.

Materials for Protective Clothing: Not specified
Hand Protection: Wear appropriate protective gloves.
Eye Protection: Chemical goggles or safety glasses.
Skin and Body Protection: Wear suitable protective clothing to avoid skin contact.
Respiratory Protection: Use a NIOSH-approved respirator or self-contained breathing apparatus whenever exposure
may exceed established Occupational Exposure Limits.
Environmental Exposure Controls: Shovel spilled material into containers for disposal. Do not flush to surface water.
Spilled chemical can be used as fertilizer (46-0-0). Follow applicable Federal, State and local reporting requirements.
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 : Solid
Appearance : White crystalline
Odor : Slight ammonia odor
Odor Threshold : Not available
pH : 7.2 @ 10% solution
Relative Evaporation Rate (butylacetate=1) : Not available
Melting Point : 133 °C (271 °F)
Freezing Point : Not available
Boiling Point : Not available
Flash Point : Not available
Auto-ignition Temperature : Not available

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Safety Data Sheet
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. Aldehydes.

SECTION 8 - EXPOSURE CONTROLS/PERSONAL PROTECTION
Control Parameters
No Occupational Exposure Limits (OELs) have been established for this product or its chemical components.
Exposure Controls
Appropriate Engineering Controls: Ensure adequate ventilation, especially in confined areas. Emergency eye wash
fountains and safety showers should be available but are not required.

Personal Protective Equipment: Safety glasses, gloves and general work clothing are recommended. Where
ventilation is insufficient, wear respiratory protection. Wearing of appropriate protective clothing and gloves is suggested
if epidermal sensitivity develops.

Safety Data Sheet
Decomposition Temperature : 135 °C (275 °F )
Flammability (solid, gas) : Not available
Lower Flammable Limit : Not available
Upper Flammable Limit : Not available
Vapor Pressure : .08 kPa (.06 mm Hg) [room temperature]
Relative Vapor Density at 20 °C : Not available
Relative Density : 1.33
Specific Gravity : 0.74 - 0.83 g/cc (46 - 52 lb/ft3)
Solubility : In water: 112.4 g/100ml @ 20 °C (68 °F)
Partition coefficient: n-octanol/water : -1.59
Viscosity : Not available
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. Decomposes at about 135°C, just above its melting point. Can be made explosive when
dissolved in Nitric Acid, even without completely drying. Stable under recommended handling and storage conditions (see
section 7).
Possibility of Hazardous Reactions: Hazardous polymerization will not occur.
Conditions to Avoid: Avoid exposing containers to heat or flame. Keep separated from incompatible materials. Avoid
moisture while in storage as urea will readily absorb moisture. Incompatible materials.
Incompatible Materials: Nitric Acid, gallium, perchlorate, strong oxidizing agents, caustics and alkalis.
Hazardous Decomposition Products: Ammonia and Nitrogen Oxides (Nitric Oxide and Nitrogen Dioxide).

SECTION 11 - TOXICOLOGICAL INFORMATION
Information on Toxicological Effects - Product
Acute Toxicity: Not classified
LD50 and LC50 Data: Not available
Skin Corrosion/Irritation: May cause skin irritation.
Serious Eye Damage/Irritation: Causes eye irritation.

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Safety Data Sheet
Respiratory or Skin Sensitization: Not classified
Germ Cell Mutagenicity: Not classified
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: Excessive inhalation of the dust may cause sore throat, coughing and irritation of
mucous membranes and the respiratory tract.
Symptoms/Injuries After Skin Contact: May cause skin irritation.
Symptoms/Injuries After Eye Contact: Dust and micro particles are likely to cause eye irritation.
Symptoms/Injuries After Ingestion: Abdominal pain, nausea, vomiting and gastrointestinal irritation may result. (Urea
is a protein to ruminants, animals with the enzyme Urease in their digestive systems, but is moderately toxic to humans
when ingested).
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
 Methylenediurea (68611-64-3)
LD50 Oral Rat > 2000 mg/kg

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])
 Methylenediurea (68611-64-3)
EC50 Daphnia 1 > 150 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)
Mobility in Soil Not available
Other Adverse Effects
Other Information: None

SECTION 13 - DISPOSAL CONSIDERATIONS
Waste Disposal Recommendations: Dispose of waste material in accordance with all local, regional, national,

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Safety Data Sheet
provincial, territorial and international regulations. Transport in closed containers.
Additional Information: Spilled chemical can be used as fertilizer.

SECTION 14 - TRANSPORT INFORMATION
14.1 In Accordance with DOT Not regulated for transport.
14.2 In Accordance with IMDG Not regulated for transport.
14.3 In Accordance with IATA Not regulated for transport.
14.4 In Accordance with TDG Not regulated for transport.

SECTION 15 - REGULATORY INFORMATION
US Federal Regulations
 Urea
 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
 Biuret (108-19-0)
 Listed on the United States TSCA (Toxic Substances Control Act) inventory
 EPA TSCA Regulatory Flag T - T - indicates a substance that is the subject of a Section
 4 test rule under TSCA.
 Methylenediurea (68611-64-3)
 Listed on the United States TSCA (Toxic Substances Control Act) inventory
 EPA TSCA Regulatory Flag T - T - indicates a substance that is the subject of a Section
 4 test rule under TSCA.
US State Regulations
 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
Canadian Regulations
 Urea (57-13-6)
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) inventory.
WHMIS Classification Class D Division 2 Subdivision B - Toxic material causing other toxic effects
 Biuret (108-19-0)
Listed on the Canadian DSL (Domestic Substances List) inventory.
WHMIS Classification Class D Division 2 Subdivision B - Toxic material causing other toxic effects
 Methylenediurea (68611-64-3)

SDS# 1132 Date: 05/01/2025 Page 7 of 8

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
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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Safety Data Sheet
Listed on Non-Domestic Substances List (NDSL)
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.