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MATERIAL SAFETY DATA SHEET

Syngenta Crop Protection, LLC
In Case of Emergency, Call
Post Office Box 18300
1-800-888-8372
Greensboro, NC 27419
1. PRODUCT IDENTIFICATION
WEATHERBLOK XT
3-[3-(4'-bromo[1,1'-biphenyl]-4-yl)-1,2,3,4-tetrahydro-1-naphthalenyl]-4-hydroxy-2H-1-benzopyran-2-one A coumarin-type anticoagulant rodenticide Section(s) Revised: 14
2. HAZARDS IDENTIFICATION
Slightly irritating to the eyes. The active ingredient is designed to cause bleeding after repeated ingestion.
Unusual Fire, Explosion and Reactivity Hazards During a fire, irritating and possibly toxic gases may be generated by thermal decomposition or combustion.
3. COMPOSITION/INFORMATION ON INGREDIENTS
*** Syngenta Occupational Exposure Limit (OEL) Ingredients not precisely identified are proprietary or non-hazardous. Values are not product specifications. Syngenta Hazard Category: D 4. FIRST AID MEASURES
Have the product container, label or Material Safety Data Sheet with you when calling Syngenta (800-888-8372), a poison contol center or doctor, or going for treatment.
WEATHERBLOK XT
If swallowed: Call Syngenta (800-888-8372), a poison control center or doctor immediately for treatment advice. Have the person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so after calling 800-888-8372 or by a poison control center or doctor. Do not give anything by mouth to an unconscious person.
If in eyes: Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after 5 minutes, then continue rinsing eye. Call Syngenta (800-888-8372), a poison control center or doctor for treatment advice.
If on skin or clothing: Take off contaminated clothing. Wash skin with soap and water.
This product contains anticoagulants with an effect similar to warfarin in that they act by interfering with the synthesis of prothrombin. The specific measure of effect is the prothrombin time. Note this may not become prolonged until 12-18 hours after ingestion. The specific antidote is Vitamin K1 (Phytomenandione BP). Antidote must be administered under medical supervision. Initially, antidote should be given by injection (10-20 mg, or 0.25 mg/kg for children, by slow intravenous infusion at a rate not exceeding 1 mg/minute. In severe cases the use of fresh frozen plasma may be required). Maintenance treatment is given orally (40 mg/day in divided doses for adults; up to 20 mg/day in divided doses for children). The prothrombin time and the hemoglobin should be monitored. Patients should be kept under medical supervision until the prothrombin time has been normal for 3 consecutive days. Oral treatment may need to be continued for several months (20 mg/day in divided doses for adults, and up to 20 mg/day in divided doses for children). (For animal cases the dose is 2-5 mg/kg). Each 20 g bar contains 1 mg of brodifacoum.
Further information is available from the Syngenta emergency number provided in this document.
Medical Condition Likely to be Aggravated by Exposure As stated above this product contains anticoagulants with an effect similar to that of warfarin. The anticoagulant interferes with the synthesis of prothrombin. Significant exposure (e.g. ingestion) can cause anticoagulation effects and could aggravate existing blood clotting disorders.
5. FIRE FIGHTING MEASURES
Unusual Fire, Explosion and Reactivity Hazards During a fire, irritating and possibly toxic gases may be generated by thermal decomposition or combustion.
Use dry chemical, foam or CO2 extinguishing media. Wear full protective clothing and self-contained breathing apparatus. Evacuate nonessential personnel from the area to prevent human exposure to fire, smoke, fumes or products of combustion. Prevent use of contaminated buildings, area, and equipment until decontaminated. 6. ACCIDENTAL RELEASE MEASURES
Control the spill at its source. Clean up spills immediately, observing precautions outlined in Section 8. Sweep up material and place in a compatible disposal container. Once all material is collected, seal container and arrange for disposition.
7. HANDLING AND STORAGE
Store the material in a well-ventilated, secure area out of reach of children and domestic animals. Do not store food, beverages or tobacco products in the storage area. Prevent eating, drinking, tobacco use, and cosmetic application in areas where there is a potential for exposure to the material. Wash thoroughly with soap and water after handling.
WEATHERBLOK XT
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
THE FOLLOWING RECOMMENDATIONS FOR EXPOSURE CONTROLS/PERSONAL PROTECTION ARE INTENDED FOR
THE MANUFACTURE, FORMULATION AND PACKAGING OF THIS PRODUCT.
FOR COMMERCIAL APPLICATIONS AND/OR ON-FARM APPLICATIONS CONSULT THE PRODUCT LABEL.
Prevent eating, drinking, tobacco usage and cosmetic application in areas where there is a potential for exposure to the material. Wash thoroughly with soap and water after handling.
Eye protection is not required for normal handling. Where eye contact is likely, wear tight-fitting chemical goggles.
Gloves are not required for normal handling. Where heavy contact is likely, wear chemical resistant (such as nitrile or butyl) gloves.
Respiratory protection is not required for normal handling. In the event of an unusual dust exposure, use engineering controls or a NIOSH-certified particulate respirator (N, P, R or HE filter) to keep exposure below the Occupational Exposure Limit.
9. PHYSICAL AND CHEMICAL PROPERTIES
10. STABILITY AND REACTIVITY
Stable under normal use and storage conditions.
11. TOXICOLOGICAL INFORMATION
Acute Toxicity/Irritation Studies (Finished Product) See "Other Toxicity Information", Sec. 11 See "Other Toxicity Information", Sec. 11 See "Other Toxicity Information", Sec. 11 See "Other Toxicity Information", Sec. 11 Brodifacoum Technical: Not teratogenic, embryotoxic or fetotoxic in rats or rabbits at doses up to 0.02 mg/kg/day - the dose causing excessive maternal toxicity.
WEATHERBLOK XT
Brodifacoum Technical: The biological half-life for brodifacoum in body tissue in rats is > 100 days. Adverse clinical effects can develop from body accumulation. Prolonged prothrombin time, depression, pallor, subcutaneous hemorrhage, bleeding of nose or gums, gastrointestinal hemorrhage, cerebral hemorrhage, shock and death can develop following exposures.
No neurotox studies have been conducted.
Brodifacoum Technical: Unlikely to be carcinogenic.
Systemically toxic concentrations of this product will probably not be absorbed through human skin.
Because this product is a wax block, inhalation is not expected to be a normal route of exposure.
No irritation is likely to develop following contact with human eyes.
Irritation will probably not develop following contact with human skin.
Effects of overexposure are those of anticoagulant overdose, i.e., reduced blood clotting ability with spontaneous bleeding in various organs. Body accumulation can result from repeated exposures since the half-life of brodifacoum is > 100 days. Individuals with blood clotting disorders may be more susceptible to overexposure effects.
In normal use this product does not present a serious health risk and ingestion has no adverse effects.
Inhalation of fumes may cause nausea and irritation. Good laboratory procedures are recommended when handling this compound. This is expected to be a low hazard for usual industrial handling.
Active IngredientsBrodifacoum Technical: Blood 12. ECOLOGICAL INFORMATION
Fish (Rainbow Trout) 96-hour LC50 0.02 ppm Invertebrate (Water Flea) Daphnia Magna 48-hour EC50 0.98 ppm Bird (Mallard Duck) 21-day LD50 0.26 mg/kg The information presented here is for the active ingredient, brodifacoum.
Not persistent in soil. Stable in water. Immobile in soil. Sinks in water (after 24 h).
13. DISPOSAL CONSIDERATIONS
WEATHERBLOK XT
Do not reuse empty container except for holding additional product.
14. TRANSPORT INFORMATION
Ground Transport - NAFTANot regulated.
Water Transport - InternationalNot regulated.
15. REGULATORY INFORMATION
RCRA Hazardous Waste Classification (40 CFR 261) 16. OTHER INFORMATION
For non-emergency questions about this product call: The information and recommendations contained herein are based upon data believed to be correct.
However, no guarantee or warranty of any kind, expressed or implied, is made with respect to the information contained herein.
WEATHERBLOK XT
WEATHERBLOK XT

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