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Material Safety Data Sheet

Revision Issued: 03/01/10 Supercedes: 8/12/09 First Issued: 8/2/1995

Section I ­ Product and Company Identification

Product Name:

Phosphogypsum

1101 Skokie Blvd., Northbrook, IL 60062 Phone (800) 241-6908 / (847) 849-4200 Suite 500, 122 ­ 1 Avenue South Saskatoon, Saskatchewan Canada S7K7G3 Phone (800) 667-0403 from Canada (800) 667-3930 from USA Emergencies (800) 424-9300 (CHEMTREC) Web Site www.potashcorp.com Health Emergencies, Contact Your Local Poison Center

st

PotashCorp MSDS No.: ERG No.: Flammability

9 N/A

Health

0 1 0

Reactivity

Specific Hazard

NFPA Code

Common Name:

Phosphogypsum

Formula:

CaSO4 · 2H2O

Synonym:

GYP, Gypsum

Uses:

Agricultural

Section II ­ Composition / Information On Ingredients

Exposure Limits Chemical Name

Calcium Sulfate Dihydrate Water, uncombined Calcium, iron, aluminum and magnesium sulfates, phosphates and silicates Phosphoric Acid

CAS No.

10101-41-4 7732-18-9

OSHA PEL

TLV ­ TWA

STEL

CEIL

mg/m 15

3

ppm

mg/m 10

3

ppm

mg/m

3

ppm

mg/m

3

ppm

% by Weight

77-87 8-14 2-6

7664-38-2

1

1

3

0.5

Section III ­ Hazard Identification

Potential Acute Health Effects: Eyes and Skin: Inhalation: Ingestion: Potential Chronic Health Effects: CARCINOGENICITY LISTS Dry material may cause slight irritation to the eyes, skin, nose and throat. Not absorbed through skin. May cause slight discomfort. Non-toxic. May result in obstruction or temporary irritation of the digestive tract. None known.

IARC Monograph: No NTP: No OSHA: No

Section IV ­ First Aid Measures

Eyes: Skin: Ingestion: Inhalation: Immediately flush eyes with a directed stream of water while forcibly holding eyelids apart to ensure complete irrigation of all eyes and lid tissue. Washing eyes within seconds is essential to achieve maximum effectiveness. Get medical attention if irritation develops. Wash thoroughly with soap and water. If irritation occurs, get medical attention. Wash clothing before reuse. Do not induce vomiting. This material is not soluble. If large amount is ingested give several glasses of water and call a physician. Remove to fresh air. If symptoms develop, seek medical attention.

Product Name: Phosphogypsum Page 1 of 4

Section V ­ Fire Fighting Measures

Flash Point: Lower Explosive Limit: Unusual Fire and Explosion Hazards: Extinguishing Media: Special Firefighting Procedures and Equipment: Non-flammable Not Applicable Autoignition Temperature: Upper Explosive Limit: Not Applicable Not Applicable

Phosphogypsum is a non-flammable inorganic salt. It will not support combustion. In a fire situation it may release toxic and/or irritating sulfur oxides or phosphorus oxides. Use any extinguishing media required for surrounding fire. Keep personnel removed from and upwind of fire. Wear full fire-fighting turn-out gear (full Bunker gear) and respiratory protection (SCBA).

Section VI ­ Accidental Release Measures

Small Spill: Large Spill: Phosphogypsum is a plant food and crop nutrient. Sweep or vacuum spills. Prevent entry into sewers and streams. Consult State or Federal environmental regulatory agencies for acceptable disposal procedures and locations. Phosphogypsum is a plant food and crop nutrient. Prevent large quantities from contacting vegetation or waterways. If uncontaminated, recover and reuse product. If contaminated with other materials, collect in suitable containers. Consult State or Federal environmental regulatory agencies for acceptable disposal procedures and locations. If spill could potentially enter any waterway, including intermittent dry creeks, contact the local authorities. If in the U.S., contact the US COAST GUARD NATIONAL RESPONSE CENTER toll free number 800-424-8802. In case of accident or road spill notify: CHEMTREC IN USA at 800-424-9300; CANUTEC in Canada at 613-996-6666 CHEMTREC in other countries at (International code)+1-703-527-3887. See Section XIII for disposal information and Section XV for regulatory requirements. Large and small spills may have a broad definition depending on the user's handling system. Therefore, the spill category must be defined at the point of release by technically qualified personnel.

Release Notes:

Comments:

Section VII ­ Handling and Storage

Ventilation: Handling: Storage: Natural ventilation is sufficient. Use appropriate personal protective equipment as specified in Section VIII. Avoid contact with skin and eyes. Avoid inhalation and ingestion. Store in ventilated area, away from fire hazards.

Section VIII ­ Exposure Controls/ Personal Protection

Engineering Controls: Good ventilation should be sufficient to control airborne levels.

Personal Protection:

Eye Protection: Protective Clothing: Respiratory Protection: Other Protective Clothing or Equipment: Wear chemical splash goggles and face shield (ANSI Z87.1 or approved equivalent) when eye and face contact is possible due to splashing or spraying of material. None Wear NIOSH approved respiratory protective equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.

Section IX ­ Physical and Chemical Properties

Appearance/Color/Odor: Melting Point/Range: Solubility in Water: Specific Gravity: Vapor Density: Bulk Density: pH: Viscosity: Grayish powder with no discernable odor 1,450ºC 2-2.5 g/L @ 20 C o 2.3-3 @ 20-25 C Not Available 3 56 lbs/ft (Loose) 3 66 lbs/ft (Tamped) 7 in 2g/L Not Applicable

o

Boiling Point: Boiling Point Range: Vapor Pressure (mmHg): Molecular Weight: % Volatiles: Evaporation Rate: Freezing Point: Density:

Not applicable Not Available Not Available 172 Not Available Not Applicable Not Applicable Not Available

Product Name: Phosphogypsum Page 2 of 4

Section X ­ Stability and Reactivity

Stability: Hazardous Polymerization: Conditions to Avoid: Materials to Avoid (Incompatibles): Hazardous Decomposition Products: Stable Will not occur Not applicable None Listed SOx gas when decomposing

Section XI ­ Toxicological Information

Significant Routes of Exposure: Eyes, Respiratory System Acute Oral Toxicity: (Rat): LD50 > 5,000 mg/kg bw; (Mouse): LD50 > 4,052-4,226 mg/kg bw Acute Inhalation Toxicity: No data available Acute Toxicity: Other Routes: Toxicity to Animals: No data available Acute Dermal Toxicity: No data available Repeated Dose Toxicity: (Hamster) Intratracheal 2-yr: LOAEL = 10 mg/animal Eye & Skin Irritation/Corrosion: May be irritating. Low toxicity based on the standard Federal Insecticide Fungicide and Rodenticide Act (FIFRA) rating for mammals. Developmental Toxicity/Teratogenicity: No data available Bacterial Genetic Toxicity In-Vitro: Gene (Salmonella typhimurium) OECD 471: Negative Special Remarks on Mutation: Toxicity to Animals: Non-Bacterial Genetic Toxicity In-Vitro: (Chinese hamster ovaries) Negative Chromosomal Aberration: Toxicity to Reproduction: No data available Carcinogenicity: No data available Other Effects on Humans: No data available Special Remarks on Chronic Effects on Humans No data available Special Remarks on Other Effects on Humans: No data available

Section XII ­ Ecological Information

EPA Ecological Toxicity rating : Acute Toxicity to Fish: Chronic Toxicity to Fish: Acute Toxicity to Aquatic Invertebrates: Chronic Toxicity to Aquatic Invertebrates Toxicity to Aquatic Plants: Toxicity to Bacteria: Toxicity to Soil Dwelling Organisms: Toxicity to Terrestrial Plants: Stability in Water: Stability in Soil: Practically non-toxic to aquatic organisms based on the Federal Insecticide Fungicide and Rodenticide Act (FIFRA) acute toxicity ratings. (Pimephales promelas) 96-hr: LC50 > 1,970 mg/L; (Lepomis macrochirus) 96-hr: LC50 > 2,980 mg/L; (Gambusia affinis) 96-hr: LC50 > 56,000 mg/L. (Salmo irideus) 28-day: NOEC > 3,263 mg/L (Daphina magna) 48-hr: EC50 = 1,970 mg/L No data available (Nitzschia linearis) 120-hr: TLm = 3,200 mg/L No data available No data available

Ecotoxicity

Environmental Fate: Toxicity: Degradation Products:

No data available Dissociates in water Stable -7 Calculated, fugacity level III: 1.1 x 10 to air, 45% to water, 54.9% to Transport and Distribution: soil, 0.0755% to sediment. See above EPA Ecological Toxicity rating. Biodegradation: No data available Photodegradation: No data available

Product Name: Phosphogypsum Page 3 of 4

Section XIII ­ Disposal Considerations

Product Disposal: General Comments: Phosphogypsum is a soil conditioner and can be distributed on agricultural land. If no agricultural land is available, collect in appropriate containers. Dispose of waste at an appropriate waste disposal facility according to applicable laws and regulations. None

Section XIV ­ Transportation Information

USDOT Proper Shipping Name: Hazard Class: Identification Number: Packing Group (Technical Name): Labeling / Placarding: Authorized Packaging: Notes: European Transportation: Not regulated TDG - Canada Not regulated

Section XV ­ Regulatory Information

This product has been reviewed according to the EPA Hazard Categories promulgated under Section 311 and 312 of the Superfund Amendment and reauthorization Act of 1986 (SARA title III) and is considered, under applicable definitions, to meet the following categories: UNITED STATES: SARA Hazard Category:

Fire:

No

Pressure Generating:

No

Reactivity:

No

Acute:

Yes

Chronic:

No

40 CFR Part 355 - Extremely Hazardous Substances: 40 CFR Part 370 - Hazardous Chemical Reporting: All intentional ingredients listed on the TSCA inventory. SARA Title III Information: Chemical Calcium Sulfate Dihydrate

None Applicable

This product contains the following substances subject to the reporting requirements of Title III (EPCRA) of the Superfund amendments and Reauthorization Act of 1986 and 40 CFR Part 372: CAS NO. 10101-41-4 Percent by Weight 77-87 CERCLA RQ (lbs) SARA (1986) Reporting 311 No 312 No 313 No

CERCLA/Superfund, 40 CFR Parts 117, 302:

If this product contains components subject to substances designated as CERCLA reportable Quantity (RQ) Substances, it will be designated in the above table with the RQ value in pounds. If there is a release of RQ Substance to the environment, notification to the National response Center, Washington D.C. (1-800-4248802) is required. WHMIS Hazard Symbol and Classification: Ingredient Disclosure List: Environmental Protection: This product is not WHMIS controlled. This product does not contain ingredient(s) on this list. All intentional ingredients are listed on the DSL (Domestic Substance List).

CANADA: EINECS#: California: Prop 65:

(Calcium Sulfate) 231-900-3 This is not a chemical known to cause cancer, nor is it listed.

Section XVI ­ Other Information

NFPA Hazard Ratings: COMMENTS: Section(s) changed since last revision: Health: 1 Fire: 0 Reactivity:

2 = Moderate

0

Special Hazards:

3 = High 4 = Extreme

0 = Insignificant

1 = Slight

The HMIS ratings are the same as NFPA. The Radium 226 content of this product is less than 10 pCi/g. II, III, IX, XI, XV

Although the information contained is offered in good faith, SUCH INFORMATION IS EXPRESSLY GIVEN WITHOUT ANY WARRANTY (EXPRESS OR IMPLIED) OR ANY GUARANTEE OF ITS ACCURACY OR SUFFICIENCY and is taken at the user's sole risk. User is solely responsible for determining the suitability of use in each particular situation. PCS Sales specifically DISCLAIMS ANY LIABILITY WHATSOEVER FOR THE USE OF SUCH INFORMATION, including without limitation any recommendation which user may construe and attempt to apply which may infringe or violate valid patents, licenses, and/or copyright.

Product Name: Phosphogypsum Page 4 of 4

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