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Disposal of Spent Aluminum Phosphide: When being disposed of, spilled or partially reacted Aluminum Phosphide is considered hazardous wastes under existing Federal Regulations. If properly exposed, the grayish -white residual dust after a fumigation will not be a hazardous waste and normally contains only a very small amount of unreacted aluminum phosphide. This waste will be safe for disposal. However, the spent residual dust from incompletely exposed Aluminum Phosphide may require special care. Triple rinse tablet and pellet flasks and stoppers with water. Then offer for recycling or reconditioning, or puncture and dispose of in a sanitary landfill, or by other procedures approved by state and local authorities. Rinsate may be disposed of in a storm sewer, sanitary landfill or by other approved procedures. Or, it is permissible to remove lids and expose empty flasks to atmospheric conditions until the residue in the flasks is reacted. Then puncture and dispose of in a sanitary landfill or other approved site, or by other procedures approved by state and local authorities. Some local and state waste disposal regulations may vary from the following recommendations. Disposal procedures should be reviewed with appropriate authorities to ensure compliance with local regulations. Contact your State Pesticide or Environmental Control Agency or Hazardous Waste Specialist at the nearest EPA Regional Office for guidance. 1. Confinement of partially spent residual materials, as in a closed container, or collection and storage of large quantities of dust may result in a fire or explosion hazard. Small amounts of hydrogen phosphide may be given off from unreacted aluminum phosphide, and confinement of the gas may result in a flash. 2. In open areas, small amounts of spent residual dust may be disposed of on site by burial or by spreading over the land surface away from inhabited buildings. 3. Residual dust from Aluminum Phosphide may also be collected and disposed of at a sanitary landfill, or other approved sites or by other procedures approved by Federal, State or Local authorities. 4. From 3 to 5 kg (7 to 10 lbs.) of spent dust from 2 to 3 flasks of Aluminum Phosphide may be collected for disposal in a 1 -gallon bucket. Larger amounts, up to about one-half case, may be collected in burlap, cotton or other types of porous cloth bags for transportation in an open vehicle to the disposal site. Do not collect dust from more than 7 flasks of tablets, 10 flasks of pellets (about 11 kg or 25 lbs.) in a single bag. Do not pile cloth bags together. Do not use this method for partially spent or "green" dust. Caution: Do not collect dust in large drums, dumpsters, plastic bags or other containers where confinement may occur. Precautions to be taken in Handling and Storage: Store Aluminum Phosphide products in a locked, well -ventilated area away from heat. Post as a pesticide storage area. Do not store in buildings inhabited by humans or domestic animals. Other Precautions: 1. Do not allow water or other liquids to contact Aluminum Phosphide tablets, pellets or their dust. 2. Do not pile up large quantities of Aluminum Phosphide during fumigation or disposal. 3. Once exposed, do not confine Aluminum Phosphide or allow hydrogen phosphide concentrations to exceed the LEL. 4. Open containers of Aluminum Phosphide only in open air. Do not open in a flammable atmosphere. Hydrogen phosphide in the head space of containers may flash upon exposure to atmospheric oxygen. 5. Aluminum Phosphide Tablets and Pellets are restricted use pesticides due to acute inhalation toxicity or highly toxic phosphine gas. For retail sale and use only by certified applicators or persons under their direct supervision and only for those uses covered by the certified applicator's certification. 6. See EPA accepted labeling for additional precautions and directions for use. SECTION Vlll — CONTROL MEASURES Respiratory Protection: NIOSH/MSHA approved full -mask with approved canister for phosphine (hydrogen phosphide, PH3) may be worn at concentrations up to 15 ppm. At levels above this or when the hydrogen phosphide concentration is unknown, NIOSH/MSHA approved SCBA or equivalent must be worn. Protective Clothing: Wear gloves when handling aluminum phosphide tablets, pellets or dust. Eye Protection: None required. Ventilation: Local ventilation is generally adequate to reduce hydrogen phosphide levels in fumigated areas to below the TLV/TWA. Exhaust fans may be used to speed the aeration of silos, warehouses, shipholds, containers, etc. We believe the statements, technical information and recommendations contained herein are reliable, but they are given without warranty or guarantee of any kind, expressed or implied, and we assume no responsibility for any loss, damage, or expense, direct or consequential, arising out of their use.