SECTION 1 - IDENTIFICATION

Product/Chemical Name Urea Solution Formula CH4N2O H2O Chemical Family Amide

Synonyms Urea Liquor; Nitrogen

General Use Solution for SCR NOX Control Systems

Distributor Information

Industrial Solution Services, Inc. (909) 931-1860
P.O. Box 1921
Upland, CA 91786

Emergency Phone:

Chemtrec (USA) (800) 424-9300

SECTION 2 - HAZARDS IDENTIFICATION

Hazard Classification

H315 Skin Corrosion/Irritation (Category 2) H320 Eye Irritation (Category 2B)

Signal Word Warning

Pictograms None

Precautionary Statements

P262 Do not get in eyes, skin or on clothing
P264 Wash hands thoroughly after handling
P302 P350 IF ON SKIN: Wash with plenty of soap and water
P305 P351 P388 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing
P332 P313 IF SKIN irritation occurs: get medical advice/attention
P337 P313 IF eye irritation persists: get medical advice/attention
P501 Dispose of container in accordance with local regional, national and international regulations

Other Hazards

None

SECTION 3 - COMPOSITION / INFORMATION ON INGREDIENTS

SECTION 4 - FIRST AID MEASURES

First Aid Measures:

Inhalation

Move patient to fresh air and monitor. If cough or difficulty in breathing develops, evaluate for respiratory tract irritation. If trained to do so, administer supplemental oxygen if needed. If irritation, coughing or difficulty in breathing persists, the patient should be seen in a health care facility

Skin Contact

Flush exposed area with copious amounts of tepid water for at least 15 minutes followed by washing area thoroughly with soap and water. The patient should be seen in a health care facility if irritation or pain persists.

Eye Contact

Flush eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, excessive tearing, or light sensitivity persists, the patient should be seen in a health care facility.

Ingestion

If conscious, give the patient large quantities of water to drink and DO NOT induce vomiting. Seek medical attention.

Important Symptoms (Acute or Delayed)

Inhalation

May irritate the nose and mucus membranes.

Skin Contact

May cause mild irritation to skin.

Eye Contact

May cause irritation. May result in redness and tearing.

Ingestion

May cause abdominal pain, nausea, or vomiting.

SECTION 5 - FIRE FIGHTING MEASURES

Flammability Solution is not flammable

Suitable Extinguishing Media Use water to extinguish if compatible with burning material

Specific Hazards Arising from the Chemical

Runoff from fire control or dilution water may cause pollution. At elevated temperature, urea solution may decompose to form cyanuric acid, ammonia, biuret, and/or nitrogen oxides.

Special Fire Fighting Procedures
Wear full fire fighting protective equipment that is appropriate for conditions. Positive pressure self - contained breathing apparatus (SCBA) should be used when there is a potential for inhalation of vapors and/or fumes.

SECTION 6 - ACCIDENTAL RELEASE MEASURES

Personal Precautions and Protective Equipment

Wear appropriate protective equipment as described in Section 8.

Emergency Procedures, Containment and Cleanup
Remove unnecessary personnel from the area. Generally, a small spill is one that involves a single, small package (i.e. up to a 55 gallon drum), small cylinder, or a small (non-continuing) leak from a large container. Shut off the source of the leak where safe to do so. Collect the material for reuse as fertilizer, or disposal in accordance with local, state, province, and federal regulations. Avoid direct discharge to sewers or other water sources, as runoff may cause pollution.

SECTION 7 - HANDLING AND STORAGE

Incompatible Materials

Oxidizers, Hypochlorites

Storage Precautions

Store away from direct sunlight in a well ventilated area. Contact with mild steel may result corrosion damage. Ensure tanks and other containers are adequately labeled for the contents

Handling Precautions
Us proper protective equipment (Section 8) when handling urea solution. Provide adequate ventilation when working with urea solution. Do not eat or drink, and wash hands with soap and water after handling.

SECTION 8 - EXPOSURE CONTROLS/PERSONAL PROTECTION

Exposure Limit (Ammonia)

TWA 25 ppm
STEL 33 ppm

PEL 50 ppm
IDLH 300 ppm
No limits established for other mixture components (urea, water, biuret, ammonium carbamate) Respiratory Protection
Under normal conditions, respiratory protection is not required. If work requires exposure within a
confined area, monitor for ammonia and oxygen content. If ammonia vapors are present, protect using an air-purifying respirator with ammonia cartridge according to the following:
< 25 ppm No protection required
25-35 ppm Air-purifying respirator required if the daily TWA is exceeded
35-50 ppm Air-purifying respirator required if exposed for >15 minutes
50-300 ppm Air-purifying respirator required
>300 ppm Fresh air supply system required (i.e., SCBA)

Eye Protection

It is recommended that safety glasses or goggles be used and if there is a potential for splashing liquid, a face shield should be used in conjunction with the safety glasses or goggles.

Skin Protection

Impervious gloves should be worn.

Other Protections
Safety shower and eyewash fountain or at least 5 gallons of accessible clean water should be provided in a urea liquid handling area.

SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical Form Liquid

Color Colorless

Odor Slight ammonia odor

Odor Threshold N/A

Boiling Point 223°F (106°C) at 50% solution

Melting Point 40% urea solution salts out at 33°F (0.6° C)

50% urea solution salts out at 64°F (18°C)

70% urea solution salts out at 135°F(57°C)

pH 9.25 at 40% solution Solubility 100% (water) Specific Gravity 1.11 at 40% solution

1.14 at 50% solution
1.175 at 70% solution

Vapor Density N/A Vapor Pressure N/A

Flash Point N/A Flammability N/A Auto-Ignition Temperature N/A Evaporation Rate N/A

% Volatile by Volume N/A Molecular Weight N/A

Density 9.28 lb/gal at 60°F for 40% solution

9.51 lb/gal at 60°F for 50% solution
9.80 lb/gal at 60°F for 70% solution

Critical Temperature N/A Decomposition Temperature N/A Partition Coefficient: n-octanol/water N/A

Viscosity N/A

SECTION 10 - STABILITY AND REACTIVITY

Reactivity

Reacts with sodium hypochlorite or calcium hypochlorite to form nitrogen trichloride that may explode spontaneously in air. Incompatible with sodium nitrite, phosphorus pentachloride, and nitrosyl or gallium
perchlorate.

Chemical Stability

This is a stable material

Hazardous Polymerization

Hazardous Polymerization will not occur

Decomposition
Urea solution forms ammonia, cyanuric acid, biuret, and/or nitrogen oxides (NOx) upon decomposition.

SECTION 11 - TOXICOLOGICAL INFORMATION

Acute Oral Toxicity

LD50 (Rat) 14,300 – 15,000 mg/kg LD50 (Mouse) 11,500 – 13,000 mg/kg LD50 (Cattle) 510 mg/kg

Exposure Routes

Inhalation (Acute) Minor respiratory irritation
(Chronic) No chronic effects
Skin Exposure (Acute) Minor dermal irritation
(Chronic) No chronic effects
Eye Contact (Acute) Minor eye irritation and tearing

(Chronic) No chronic effects
Ingestion (Acute) Irritation of the mouth and throat, possible abdominal pain, nausea, vomiting
(Chronic) N/A Other N/A

SECTION 12 - ECOLOGICAL INFORMATION

Acute Toxicity to Fish

LC50 (Barillius Barna) 9,100 mg/L (96 hr)

Acute Toxicity to Aquatic Invertebrates

EC50 >10,000 mg/L (DIN 38412 Part 11; 24 hr)

Ecological Effects

Persistence and Degradability N/A Bioaccumulation potential N/A Mobility in Soil N/A
Other Adverse Effects Notify local health and wildlife officials and operators of any nearby water intakes of contamination or discharge into or leading to waterways.

SECTION 13 - DISPOSAL CONSIDERATIONS

RCRA Hazardous Waste Not listed

Neutralization No neutralization required

Disposal Practices
Consult state and local environmental agencies for acceptable disposal methods. Recover product for use as a fertilizer, if possible.

SECTION 14 - TRANSPORT INFORMATION

Urea solution is not listed by any U.S. or Canadian transportation authority as a hazardous material and as such, no specific information is available.

SECTION 15 - REGULATORY INFORMATION

SARA Hazard Categories

Immediate Health Hazard Yes
Delayed Hazard No Fire Hazard No Pressure Hazard No Reactivity Hazard No
CERCLA Hazardous Substance Not Listed

TSCA Inventory Not Listed

SECTION 16 - OTHER INFORMATION

The information and recommendations herein are taken from data contained in independent, industry- recognized references including but not limited to NIOSH, OSHA, CHRIS, the TFI Product Testing Program, and SAX's Dangerous Properties of Industrial Materials — ninth edition. INDUSTRIAL SOLUTION SERVICES, INC. makes no guarantee, warranty or other representation concerning this substance, since conditions of its use are beyond the control of the company. INDUSTRIAL SOLUTION SERVICES, INC. disclaims any liability for loss or damage incurred in connection with the use of this substance.
Revised February 15, 2018