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PRECAUTIONARY STATEMENTS Hazard~ to HU"1ans and Domestic Animals ~ DANGER ~ POISON PELIGRO Extremely Hazardous Liquid And Vapor Under Pressure. Fatal If Inhaled . Causes Irreversible Eye Damage . Contact with Liquid Causes Freeze Burns Of Exposed Skin Do not get in eyes, on skin or on clothing. ZYTHOR is odorless and colorless, Exposure to toxic levels may occur without warning or detection by the user or exposed persons, Protective Clothing Wear splash resistant goggles or full face shield for eye protection during introduction of fumigant or when working around any lines containing fumigant under pressure. Do not wear gloves or rubber boots. Do not reuse clothing or shoes that have become contaminated with liquid fumigant until they have been thoroughly aerated and cleaned. Respiratory Protection Use of an approved Respiratory Protection Device (see Respiratory Protection Devices) is required to enter or remain within a fumigated space anytime the concentration of ZYTHOR within that space is known to exceed 1 ppm or is unknown, such as at the start of the aeration process. If the concentration of ZYTHOR within the fumigated space, as measured by an approved and properly calibrated Low Fumigant Level Detection Device (see Low Fumigant Level Detection Devices), does not exceed 1 ppm, no respiratory protection is required to enter or remain within the fumigated space. Because the approved detection devices give immediate readings of the levels of fumigant present, respiratory protection is not required when these devices are in use after the initial 1 hour aeration procedure is completed. However, whenever a fumigant level reading exceeding 1 ppm is obtained within a fumigated space, anyone within the fumigated space not using an approved Respiratory Protection Device must immediately leave the fumigated space and remain outside the fumigated space until fumigant level readings of 1 ppm or greater are no longer obtained within the fumigated space. The concentration of ZYTHOR must be monitored in the breathing zones. The fumigated space must remain posted until cleared for re- occupancy. Respiratory Protection Devices Use a NIOSH or MSHA approved positive pressure Self-Contained Breathing Apparatus (SCBA, not SCUBA) or combination air supplied/SCBA respirator, such as those manufactured by Ranger. Survivair, Scott, or MSA, when respiratory protection is required (see Respiratory Protection). Required Respiratory Protection Devices must be on site and operational before an application of ZYTHOR begins. Before using any make or brand of Respiratory Protection Device, learn how to use it correctly. Determine that it is in good working order, that it has an air supply sufficient (0 supply air for the period of time the device will be in use, that it fits properly and that it provides an adequate seal around the face. Low Fumigant Level Detection Devices As part of the aeration/clearance process or cylinder leak procedure, an approved Low Fumigant Level Detection Device capable of confirming a concentration of ZYTHOR of 1 ppm or less, such as the SPECTROS SF-ExplorlR, INTERSCAN or MIRAN gas analyzers, should be used to sample the air within the breathing zones of the fumigated space to confirm the level of fumigant, if any, that is still present The INTERSCAN gas analyzer must be calibrated within one month prior to its use as a Low Fumigant Level Detection Device. All other approved Low Fumigant Level Detection Devices must be calibrated according to their manufacturer's recommendations. ENVIRONMENTAL HAZARDS Sulfuryl fluoride is highly toxic to fish and wildlife. Exposure to non-target organisms should be avoided. PHYSICAL AND CHEMICAL HAZARDS Sulfuryl fluoride is a colorless, odorless, non-irritating toxic gas. ZYTHOR cylinders are under pressure and must not be stored near heat or open flame. Exposure of the cylinder(s) to temperatures above 1580F will cause a fusible plug in the valve body to melt and the contents to be released into the atmosphere. Under high heat conditions (temperatures above 7520F). ZYTHOR can decompose into sulfur dioxide (S02), hydrofluoric acid (HF) and other decomposition products. Hydrofluoric acid is highly reactive and can corrode or damage many materials including metals, glass, ceramic finishes, fabrics, etc. STORAGE AND DISPOSAL Do not contaminate water, food or feed by storage or disposal Do not ship or store with food, feed, drugs or clothing. Pesticide Storage: Store in a dry, cool, well ventilated area under lock and key. Post as a pesticide storage area. Store cylinders upright, secured to a rack or wall to prevent tipping. Storage of ZYTHOR in occupied buildings and spaces is prohibited unless storage area(s) is equipped with a permanently mounted and properly maintained and functioning sulfuryl fluoride monitoring device designed to alert occupants of the building to the presence of sulfuryl fluoride in the air of the storage area at a level greater than 1 ppm. Cylinder Return: When cylinder is empty, close valve, screw safety cap onto valve outlet and replace protection bonnet Follow registrant's instructions for return of empty or partially empty cylinders. Only the registrant is authorized to refill cylinders. Do not use cylinders for any other purpose. Always follow the proper cylinder handling directions. Pesticide Disposal: Pesticide wastes are acutely hazardous. Improper disposal of excess pesticide is a violation of Federal law. If the wastes cannot be disposed of by use according to label instructions, consult your State Pesticide or Environmental Control Agency or the Hazardous Waste Representative at the nearest EPA Regional Office for guidance. DIRECTIONS FOR USE It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Carefully read and follow all Directions For Use. ZYTHOR is a highly hazardous material and should be used only by individuals trained in its proper use and knowledgeable of its possible hazards. All local. state and federal rules and regulations regarding security requirements, reentry, aeration. clearance, posting of warning signs and use of detection devices, warning agents and respiratory protection equipment must be observed when fumigating with ZYTHOR Do not apply this product without first computing the dose to be applied with the Fumicalc software program. The Fumicalc program, which is available from Ensystex II, Inc.. is part of the labeling for this product and must be used to calculate any dose of ZYTHOR Two persons trained in the use of ZYTHOR, at least one of whom is an applicator licensed/certified to perform fumigations by the state in which the application is being performed, must be present on site during any release of ZYTHOR, during any reentry into the fumigated space within the exposure period and during initiation of the initial aeration procedure. If fumigating for insect pests, do not apply ZYTHOR when the lowest temperature at a site of pest activity within the fumigated space is below 40oF. Generally. the lowest temperature in a slab structure is found at the slab foundation and the lowest temperature in a crawl space structure is found just below the surface of the crawl space soil. No temperature restriction applies when fumigating for rodents. Remove edible items, including food and feed, from the structure before the fumigation if they cannot be protected against exposure to ZYTHOR (see Preparation for Fumigation). Chloropicrin must be used to warn of the presence of fumigant within the fumigated space (see Warning Agent). Handling and Transportation of Cylinders Cylinders should not be subjected to rough handling or mechanical shock such as dropping, bumping. dragging or sliding. Do not use rope, slings, hooks, tongs or similar devices to unload or move cylinders. Transport cylinders using a hand truck or fork truck to which the cylinder can be firmly secured Do not transport any cylinders in closed vehicles where they occupy the same common airspace as personnel. Transport cylinders securely and only in an upright position. ZYTHOR cylinders should never be transported by aircraft under any circumstances. Do not remove valve protection bonnet and safety cap until immediately before use. Replace safety cap and valve protection bonnet as soon as practical after use. The cylinder valve is designed to retain a small amount of fumigant within the cylinder when the pressure within the cylinder falls below a certain pressure. This feature prevents the introduction of unauthorized substances into the cylinder when it is empty. This is facilitated by a spring loaded residual pressure feature incorporated into the valve that cuts off gas flow when the pressure of the remaining gas falls below a certain low level. Do not attempt to defeat this mechanism as serious injury could result Cylinder Leak Procedure Evacuate immediate area of leak. Use an approved Respiratory Protection Device (see Respiratory Protection Devices) for entry into affected areas to correct the problem. Move leaking or damaged cylinder outdoors or to an isolated location, observing strict safety precautions. Work upwind from the cylinder if possible. Entry into the affected area by persons not using approved Respiratory Protection Devices is not permitted until the concentration of ZYTHOR in the air of the affected area is determined to be 1 ppm or less, as determined by an approved Low Furnigant Level Detection Device (see Low Level Fumigant Detection Devices). Compressed Gas Hazards The release of fumigant under high pressure can be forceful, creating a potential for personal injury. A fog-out can occur if ZYTHOR is released too rapidly The chances of this condition occurring may be decreased by following the instructions contained in this label (see ZYTHOR Release Preparation). The rapid discharge of ZYTHOR through introduction equipment will result in the 2 cooling of parts of the equipment and the cylinders. Contact with the cooled equipment can cause frostbite.