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Applicator's Manual for Degesch Phostoxin. Pellets and Tablets - R. Epa Reg No. 40285-3. Epa Reg. No. 40285-1.

Date: Mar 1998
Length: 22 pages
523680042-523680063
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0 THIS PRODUCT IS ACCOMPANIED BY AN APPROVED LABEL AND APPLICATOR'S MANUAL. READ AND UNDERSTAND THE ENTIRE LABELING. ALL PARTS OF THE LABELING ARE EQUALLY IMPORTANT FOR SAFE AND EFFECTIVE USE OF THIS PRODUCT. CALL DEGESCH AMERICA, INC., OR EPA IF YOU HAVE ANY QUESTIONS OR DO NOT UNDERSTAND ANY PART OF THIS LABELING. REFER TO THE APPLICATOR'S MANUAL FOR DETAILED PRECAUTIONS, RECOMMENDATIONS AND DIRECTIONS FOR USE. WARRANTY Seller warrants that the product conforms to its chemical description and when used according to label directions under normal conditions of use, it is reasonably fit for the purposes stated on the label. Seller makes no other warranty, either express or implied, and buyer assumes all risk should the product be used contrary to label instructions. CLASSIFIED BY UNDERWRITERS LABORATORIES, INC., AS TO FIRE HAZARD ONLY WHEN USED SPECIFICALLY AS DIRECTED IN THE MANUFACTURER'S INSTRUCTIONS. DEGESCH PHOSTOXIN TABLETS AND PELLETS ARE NONCOMBUSTIBLE, BUT EXPOSURE TO MOIST AIR OR WATER RELEASES FLAMMABLE AND TOXIC PHOSPHINE (HYDROGEN PHOSPHIDE) GAS. SPONTANEOUS IGNITION MAY RESULT IF CONTACTED BY WATER, ACIDS, OR CHEMICALS. 43R7. to
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RESTRICTED USE PESTICIDE DUE TO ACUTE INHALATION TOXICITY OF HIGHLY TOXIC HYDROGEN PHOSPHIDE (PHOSPHINE, PH9) GAS For retail sale to and use only by certified applicators for those uses covered by the applicator's certification or persons trained in accordance with the Applicator's Manual working under the direct supervision and in the physical presence of the certified applicator. Physical presence means on site or on the premises. Read and follow the label and the DEGESCH America, Inc. Applicator's Manual which contains complete instructions for the safe use of this pesticide. APPLICATOR'S MANUAL FOR DGaC&~@z'&1"H0ST0XIN® PELLETS and TABLETS - R EPA Reg. No. 40285-3 EPA Reg. No. 40285-1 FOR USE AGAINST INSECTS WHICH INFEST STORE COMMODITIES AND CONTROL OF BURROWING PESTS Active Ingredient: Aluminum Phosphide ................................................................55`/0 Other Ingredients ...................................................................................................4 5% KEEP OUT OF REACH OF CHILDREN DANGER - POISON - PELIGRO 4W PRECAUCION AL USUARIO: Si usted no lee Ingles, no use este productor hasta que la etiqueta so le haya sido explicado ampliamente. (TO THE USER: If you cannot read English, do not use this product until the label has been fully explained to you.) STATEMENT OF PRACTICAL TREATMENT Symptoms of overexposure are headaches, dizziness, nausea, difficult breathing, vomiting, and diarrhea. In all cases of overexposure get medical attention immediately. Take victim to a doctor or emergency treatment facility. If the gas or dust from aluminum phosphide is Inhaled: Get exposed person to fresh air. Keep warm and make sure person can breathe freely. If breathing has stopped, give artificial respiration by mouth-to-mouth or other means of resuscitation. Do not give anything by mouth to an unconscious person. If aluminum phosphide pellets, tablets or powder are swallowed: Drink or administer one or two glasses of water and induce vomiting by touching back of throat with finger, or If available, syrup of ipecac. Do not give anything by mouth if victim is unconscious or not alert. If powder or granules of aluminum phosphide get on skin or clothing: Brush or shake material off clothes and shoes in a well ventilated area. Allow clothes to aerate in a ventilated area prior to laundering. Do not leave contaminated clothing in occupied and/or confined areas such as automobiles, vans, motel rooms, etc. Wash contaminated skin thoroughly with soap and water. If dust from pellets or tablets gets In eyes: Flush with plenty of water. Get medical attention. DEGESCH AMERICA, INC. Weyers Cave, Virginia 24486 • USA • Telephone (540) 234-9281 EPA Est. No. 40285-VA-01 EPA Reg. No. 40285-1 and 40285-3 FORM 17828 (R 3/98)
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112.5 Caution: Wear appropriate respiratory protection during wet deactivation of unexposed or Incompletely exposed Phostoxin. Never place pellets, tablets, or dust in a closed container such as a dumpster, sealed drum, plastic bag, etc., as flammable concentrations and a flash of hydrogen phosphide gas are likely to develop. ~`x11.2.6 The EPA has determined that proper disposal of aluminum phosphide will cause no unreasonable adverse effects to the environment. FOR ASSISTANCE, CONTACT: DEGESCH America, Inc. P. O.Box 116 Weyers Cave, Virginia 24486 USA Telephone: (540) 234-9281 FAX: (540) 234-8225 or CHEMTREC (800) 424-9300 19
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5. Wear dry gloves of cotton or other material if contact with Phostoxin tablets, pellets or dust is likely. Aerate used gloves and other contaminated clothing In a well ventilated area prior to laundering. Wash hands thoroughly after using Phostoxin. 6. Never open fumigant containers in a flammable atmosphere. It Is preferable to open them in open air, near a fan or~ other appropriate ventilation which will rapidly exhaust contaminated air. Containers may be opened inside the structure to be fumigated provided worker's exposure to hydrogen phosphide gas does not exceed allowable limits. 7. Do not allow Phostoxin to contact liquid water or to pile up. 8. Dispose of empty containers and spent residual dust in a proper manner consistent with the label instructions. 9. Post warning placards on fumigated areas. 10. Prior to fumigation, notify appropriate company employees. Provide to local officials (fire department, rescue squad, police, etc.) on an annual basis relevant safety information for use In the event of an emergency. 11. Hydrogen phosphide fumigants are ri2t to be used for vacuum fumigations. 12. Exposure to hydrogen phosphide must not exceed the eight hour TWA of 0.3 ppm during application, or a ceiling concentration of 0.3 ppm after application Is completed. 13. Fumigated areas must be aerated to 0.3 ppm hydrogen phosphide or less prior to reentry by unprotected workers. 14. Finished foods and feeds which have been fumigated with Phostoxin must be aerated for 48 hours prior to offering to the end consumer. 15. Transfer of a treated commodity to another site without complete aeration is permissible provided that the new storage site is placarded if its concentration Is above 0.3 ppm. 16. Keep containers of Phostoxln tightly closed except while removing product for application. 17. Protect materials containing metals such as copper, silver, gold and their alloys and salts from corrosive exposure to hydrogen phosphide. 18. Tablets, pellets and/or their reacted residues must not come into contact with any processed food except that they may be added directly to processed brewer's rice, malt and corn grits used In the manufacture of beer. 19. Do not use aluminum phosphide containers for any purpose other than recycling or reconditioning. ~ 20. OSHA recommends preexposure screening of employees to detect impaired pulmonary function. They recommend that any employees developing this condition be referred for medical examination. 2. PRECAUTIONARY STATEMENTS 2.1 Hazards to Humans and Domestic Animals DANGER: Aluminum phosphide from DEGESCH Phostoxin tablets, pellets or dust may be fatal if swallowed. Do not get in eyes, on skin or on clothing. Do not eat, drink or smoke while handling aluminum phosphide fumigants. If a sealed container is opened, or if the material comes into contact with moisture, water or acids, these products will release hydrogen phosphide (phosphine, PH3) which is an extremely toxic gas. If a garlic odor is detected, refer to the Industrial Hygiene Monitoring section on Page16 of the Applicator's Manual for appropriate monitoring procedures. Pure hydrogen phosphide gas is odorless; the garlic odor Is due to a contaminant. Since the odor of hydrogen phosphide may not be detected under some circumstances, the absence of a garlic odor does not mean that dangerous levels of hydrogen phosphide gas are absent. Observe proper reentry procedures specified elsewhere in the labeling to prevent overexposure. 2.2 Statement of Practical Treatment Symptoms of overexposure are headache, dizziness, nausea, difficult breathing, vomiting, and diarrhea. In all cases of over exposure get medical attention immediately. Take victim to a doctor or emergency treatment facility. If the gas or dust from aluminum phosphide Is Inhaled: Get exposed person to fresh air. Keep warm and make sure person can breathe freely. If breathing has stopped, give artificial respiration by mouth-to-mouth or other means of resuscitatlon. Do not give anything by mouth to an~ unconscious person. If aluminum phosphide pellets, tablets or powder are swallowed: Drink or administer one or two glasses of water and Induce vomiting by touching back of throat with finger, or if available, syrup of ipecac. Do not give anything by mouth If victim Is unconscious or not alert. 2 52368 0046
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TABLE OF CONTENTS 1. I NTRO DUCTI ON .................................................................................................... ...................................1 2. PRECAUTIONARY STATEMENTS .................................................................................................... ......2 2.1 Hazards to Humans and Domestic Animals ..........................................................................•.•..••••••••2 2.2 Statement of Practical Treatment .................................................................................................... ...2 2.3 Note to Physician .................................................................................................... ...........................3 2.4 Physical and Chemical Hazards ............................................................................:....................... .....3 3. DIRECTIONS FOR USE .................................................................................................... .......................4 3.1 Generat .................................................................................................... ...........................................4 3.2 Efficacy .................................................................................................... ...........................................5 3.3 Exposure Conditions .................................................................................................... ......................5 3.4 Commodities Which May be Fumigated with Phostoxin ....................................................................6 3.5 Recommended Dosages .................................................................................................... ................7 3.6 Application Procedures (structure, grain, rodents, etc.) ........................................•.....•.•.....•........•..•••6 4. PROTECTIVE CLOTHING ..................... .............................. ................................................................... .14 5. RESPIRATORY PROTECTION .................................................................................................... ..........14 5.1 When Respiratory Protection Must Be Worn ..................................•..••.•..••...•••.••••.•.••••••••••••• •••••••••••14 5.2 Permissible Gas Concentration Ranges for Respiratory Protection Devices ...................................14 5.3 Requirements for Availability of Respiratory Protection .............................................•..•••.•..••..•••..••.14 6. PLACARDING OF FUMIGATED AREAS ..............................................................................................15 7. AERATION OF FUMIGATED COMMODITIES ................................ .••...•..•..•.•,••••••••••••••••••••••••••••••••••••••15 7.1 Foods and Feeds .................................................................................................... .........................15 7.2 Tobacco .................................................................................................... ........................................15 8. APPLICATOR AND WORKER EXPOSURE ............................. ................ ............................................. 15 8.1 Hydrogen Phosphide Exposure Limits .............................................................................................15 8.2 Application of Fumigant .................................................................................................... ................16 8.3 Leakage from Fumigated Sites .................................................................................................... :...16 8.4 Aeration and Reentry .................................................................................................... ...................16 8.5 Handling Unaerated Commodities ...................................................................................................1 6 8.6 Industrial Hygiene Monitoring .................................................................................................... .......16 9. STORAGE INSTRUCTIONS .................................................................................................... ...............16 10. DISPOSAL INSTRUCTIONS .............................................................................:...................... ..............17 10.1 General .................................................................................................... ........................................17 10.2 Directions for Disposal of Residual Dust from Phostoxin ...........................................................•.•••17 10.3 Directions for Deactivation of Residual Dust from Phostoxin .............................•...•.•...••....••...•••.••••17 11. SPILL AND LEAK PROCEDURES .................................................................................................... ....18 11.1 General Precautions and Directions ................................................................................................18 11.2 Directions for Deactivation by the Wet Method .....................................•....••••.•.•.••.••,•••••••••••••••• ••••••18 52368 0044
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It Is preferable to open containers of aluminum phosphide products In open air as under certain conditions, they may flash upon opening. Containers may also be opened near a fan or other appropriate ventilation which will rapidly exhaust contaminated air. When opening, point the container away from the face and body and slowly loosen the cap. Although the chances for a flash are very remote, never open these containers in a flammable~ atmosphere. These precautions will also reduce the fumigator's exposure to hydrogen phosphide gas. Containers may be opened inside the structure to be fumigated provided workers exposure to hydrogen phosphide gas does not exceed allowable limits. Pure phosphine (hydrogen phosphide) gas is practically Insoluble In water, fats and oils, and is stable at normal fumigation temperatures. However, it may react with certain metals and cause corrosion, especially at higher temperatures and relative humidities. Metals such as copper, brass and other copper alloys, and precious metals such as gold and silver are susceptible to corroslon by phosphine. Thus, small electric motors, smoke detectors, brass sprinkler heads, batteries and battery chargers, fork lifts, temperature monitoring systems, switching gears, communication devices, computers, calculators and other electrical equipment should be protected or removed before fumigation. Hydrogen phosphide will also react with certain metallic salts and, therefore, sensitive items such as photographic film, some Inorganic pigments, etc., should not be exposed. 3. DIRECTIONS FOR USE 3.1 General It is a violation of Federal law to use this product In a manner inconsistent with Its labeling. 3.1.1 DEGESCH Phostoxin tablets and pellets are Restricted Use Pesticides due to the acute inhalation toxicity of hydrogen phosphide (phosphine, PH3) gas. These products are for retail sale to and use only by certified applicators for those uses covered by the applicator's certification or persons trained in accordance with the Applicator's Manual working under the direct supervision and In the physical presence of the certified applicator. Physical presence means on site or on the premises. Read and follow the label and the DEGESCH America, Inc., Applicator's Manual which contains complete instructions for the safe use of this pesticide. 3.1.2 Phostoxln is a highly hazardous material and should be used only by Individuals trained In its proper use. Before using, read and follow all label precautions and directions. ~ Additional copies of this Manual are available from: DEGESCH America, Inc, P. O. Box 116 Weyers Cave, VA 24486 (540) 234-9281 FAX (540) 234-8225 or Internet address: http://www.degeschamerica.com Persons working with Phostoxin should be knowledgeable of the hazards of this chemical and trained in the use of required respiratory equipment and detector devices, emergency procedures, and use of the fumigant. 3.1.3 At least two persons trained in the use of Phostoxin must be present during fumigation of structures If entry into the structure is required for application of the fumigant. Two trained persons must also be present during reentry into fumigated or partially aerated structures. Only one trained person is required to be present when Phostoxin is applied from outside the area to be treated. 3.1.4 Shipholds, barges, containers on ships, railroad cars and containers shipped piggyback by rail may be fumigated in transit. However, trucks, vans, trailers and similar transport vehicles cannot be moved over public roads or highways until they are aerated and the warning placards removed. 3.1,5 Do not fumigate commodities with Phostoxin when commodity temperature Is below 40oF (5oC). 3.1.6 The site to be fumigated must first be Inspected to determine If it can be made sufficiently gas tight. Then a plan should be developed to provide for safe and efficient application of the fumigant to include emergency procedures, etc., where required, and to decide how monitoring should be conducted to prevent excessive exposures. ~ 3.1.7 Wear dry gloves of cotton or other material while handling Phostoxin tablets and pellets. Wash hands thoroughiy"' after use. 4 52368 0048
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If powder or granules of aluminum phosphide get on skin or clothing: Brush or shake material off clothes and shoes in a well ventilated area. Allow clothes to aerate In a ventilated area prior to laundering. Do not leave contaminated clothing in occupied and/or confined areas such as automobiles, vans, motel rooms, etc. Wash contaminated skin thoroughly with soap and water. If dust from pellets or tablets gets in eyes: Flush with plenty of water. Get medical attention. 2.3 Note to Physician (we recommend that this section be given to the attending physician) Aluminum phosphide tablets, pellets or dust reacts with moisture from the air, acids and many other liquids to release hydrogen phosphide (phosphine, PH3) gas. Mild exposure by inhalation causes malaise (indefinite feeling of sickness), ringing in the ears, fatigue, nausea and pressure In the chest which is relieved by removal to fresh air. Moderate poisoning causes weakness, vomiting, pain Just above the stomach, chest pain, diarrhea and dyspnea (difficulty In breathing). Symptoms of severe poisoning may occur within a few hours to several days resulting in pulmonary edema (fluid in lungs) and may lead to dizziness, cyanosis (blue or purple skin color), unconsciousness, and death. In sufficient quantity, phosphine affects the liver, kidneys, lungs, nervous system and circulatory system. Inhalation can cause lung edema (fluid in lungs) and hyperemia (excess of blood in a body part), small perivascular brain hemorrhages and brain edema (fluid In brain). Ingestion can cause lung and brain symptoms but damage to the viscera (body cavity organs) is more common. Phosphine poisoning may result in (1) pulmonary edema, (2) liver elevated serum GOT,LDH and alkaline phosphatase, reduced prothrombin,hemorrhage and jaundice (yellow skin color) and (3) kidney hematuria (blood in urine) and anuria (abnormal or lack of urination). Pathology is characteristic of hypoxia (oxygen deficiency In body tissue). Frequent exposure to concentrations above permissible levels over a period of days or weeks may cause poisoning. Treatment is symptomatic. The following measures are suggested for use by the physician in accordance with his own judgement: In its milder forms, symptoms of poisoning may take some time (up to 24 hours) to make their appearance, and the following is suggested. 1• Give complete rest for 1-2 days, during which the patient must be kept quiet and warm. 2. Should patient suffer from vomiting or increased blood sugar, appropriate solutions should be administered. Treatment with oxygen breathing equipment is recommended as Is the administration of cardiac and circulatory stimulants. In cases of severe poisoning (intensive Care Unit recommended): 1. Where pulmonary edema is observed, steroid therapy should be considered and close medical supervision Is recommended. Blood transfusions may be necessary. 2. In case of manifest pulmonary edema, venesection should be performed under vein pressure control. Heart glycosides (I.V.) (in case of hemoconcentration, venesection may result in shock). On progressive edema of the lungs:immediate intubation with a constant removal of edema fluid and oxygen over-pressure respiration, as well as any measures required for shock treatment. In case of kidney failure, extracorporeal hemodialysis is necessary. There is no specific antidote known for this poisoning. 3. Mention should be made here of suicidal attempts by taking solid phosphide by mouth. After swallowing: emptying of the stomach by vomiting, flushing of the stomach with diluted potassium permanganate solution or a solution of magnesium peroxide until flushing liquid ceases to smell of carbide. Thereafter, apply medicinal charcoal. 2.4 Physical and Chemical Hazards Aluminum phosphide in tablets, pellets and partially spent dust will release hydrogen phosphide if exposed to moisture from the air or if it comes into contact with water, acids and many other liquids. Since hydrogen phosphide may ignite spontaneously at levels above its lower flammable limit of 1.8% v/v, it is important not to exceed this concentration. Ignition of high concentrations of hydrogen phosphide can produce a very energetic reaction. Explosion can occur under these conditions and may cause severe personal injury. Never allow the bulldup of hydrogen phosphide to exceed explosive concentrations Do not confine spent or partially spent metal phosphide fumigants as the slow release of hydrogen phosphide from this material may result in formation of an explosive atmosphere. Aluminum phosphide fumigants should not be stacked or piled up or contacted with liquid water. This may cause a temperature increase, increase the rate of gas production and confine the gas so that ignition could occur.
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The length of the fumigation must be great enough so as to provide for adequate control of the insect pests which infest the commodity being treated. Additionally, the fumigation period should be long enough to allow for more or less complete reaction of Phostoxin with moisture so that little or no unreacted aluminum phosphide remains. This will minimize worker exposures during further storage andlor processing of the treated bulk commodity as~' well as reduce hazards in the disposal of partially spent aluminum phosphide products remaining after space~ . fumigations. The proper length of the fumigation period will vary with exposure conditions since, in general, insects are more difficult to control at lower temperatures, and the rate of hydrogen phosphide gas production by Phostoxln is lower at lower temperatures and humidities. It should be noted that there is little to be gained by extending the exposure period if the structure to be fumigated has not been carefully sealed or If the distribution of gas Is poor and Insects are not subjected to lethal concentrations of hydrogen phosphide. Careful sealing is required to ensure that adequate gas levels are retained and proper application procedures must be followed to provide satisfactory distribution of hydrogen phosphide gas. Some structures can only be treated when completely tarped while others cannot be properiy sealed by any means and should not be fumigated. Exposure times must be lengthened to allow for penetration of gas throughout the commodity when fumigant is not uniformly added to the commodity mass, for example, by surface application or shallow probing. This Is particularly important in the fumigation of bulk commodity contained in large storages. Remember, exposure periods recommended In the table are minimum periods and may not be adequate to control all stored products pests under all conditions nor will they always provide for total reaction of Phostoxin, particularly if temperatures and commodity moisture levels or humidity are low during the fumigation. 3.4 Commoditles Which May be Fumigated with Phostoxin Phostoxin may be used for the fumigation of listed raw agricultural commodities, animal feed and feed ingredients, processed foods, tobacco and certain other nonfood items. 3.4.1 Raw Agricultural Commoditles, Animal Feed and Feed ingredients Phostoxin tablets and pellets may be added directly to animal feed, feed ingredients and raw agricultural commodities stored in bulk. For these commodities not stored in bulk, Phostoxin may be placed in moisture permeable envelopes, on trays, etc., and fumigated as with processed foods. Raw Agricultural Commodities and Animal Feed and Feed Ingredients Which May Be Fumigated with Phostoxin almonds flower seed sesame seed animal feed & feed ingredients grass seed seed & pod vegetables barley millet sorghum Brazil nuts oats soybeans cashews peanuts sunflower seeds cocoa beans pecans triticale coffee beans pistachio nuts vegetable seed corn popcorn walnuts cottonseed rice wheat dates rye filberts safflower seed 3.4.2 Processed Foods The listed processed foods may be fumigated with Phostoxin. Under no condition shall any processed food or bagged commodity come in contact with Phostoxin tablets, pellets or residual dust except that Phostoxin may be added directly to processed brewer's rice, malt and corn grits for use in the manufacture of beer. Processed Foods Which May Be Fumigated With Phostoxin Processed Candy and Sugar Cereal Flours and Bakery Mixes Cereal Foods (including cookies, crackers, macaroni, noodles, pasta, pretzels, snack foods and spaghetti) Processed Cereals (including milled fractions and packaged cereals) ~ Cheese and Cheese Byproducts Chocolate and Chocolate Products (assorted chocolate, chocolate liquor, cocoa, cocoa powder, dark chocolate coating and milk chocolate) Processed Coffee 6 52368 0050
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An enclosure suitable for fumigation may be formed by covering bulk or packaged commodity with poly sheeting. The sheets may be taped together to provide a sufficient width of material to ensure that adequate sealing is obtained. If the flooring upon which the commodity rests is of wood or other porous material, it should be repositioned onto poly prior to covering for fumigation. The plastic covering of the pile may be sealed to the floor using sand or water snakes, by shoveling soil or sand onto the ends of the plastic covering or by other suitable procedures. The poly covering should be reinforced by tape or other means around any sharp corners or edges in the stack so as to reduce the risk of tearing. Thinner poly, about 2 mll, Is suitable for most indoor tarp fumigations and for sealing of windows, doors and other openings in structures. However, 4 mil poly or thicker is more suitable for out door applications where wind or other mechanical stresses are likely to be encountered. Tablets or pellets may be applied to the tarped stack or bunker storage of bulk commodity through slits in the poly covering . Probing or other means of dosing may be used. Avoid application of large amounts of Phostoxin at any one point. The Phostoxin should be added below the surface of the commodity If condensation or other source of moisture is likely to form beneath the poly. The slits In the covering should be carefully taped to prevent loss of gas once the dose has been applied. Phostoxln Prepacs (not classified by UL) are recommended for the treatment of bagged commodities and processed foods although tablets and pellets on trays or sheets of Kraft paper may be used. Care should be taken to see that the poly is not allowed to cover the Phostoxin and prevent contact with moist air or confine the gas. Distribution of hydrogen phosphide gas Is generally not a problem in the treatment of bagged commodities and processed foods. However, fumigation of larger bunker storages containing bulk commodity will require proper application procedures to obtain adequate results. Place warning placards at conspicuous points on the enclosure, 3.6.8 Fumlgatlon of Ships 3.6.8.1 Generallnformation 1. Important - shipboard, in transit ship or shiphold fumigation is also governed by U.S. Coast Guard Regulation 46 CFR 147A. Interim regulations for shipboard fumigation. Refer to this regulation prior to fumigation. For further information contact: Commandant U.S. Coast Guard Hazardous Materials Standards Division GMSO-3 Washington, DC 20593-0001 2. DEGESCH Phostoxin tablets and pellets are classified by EPA as restricted use pesticides due to the acute inhalation toxicity of hydrogen phosphide (phosphine, PH3) gas. These products are for retail sale to and use only by certified applicators for those uses covered by the applicators certification or persons trained in accordance with the Appiicator's Manual working under the direct supervision and in the physloal presence of the certified applicator. Physical presence means on site or on the premises. Read and follow the label and the DEGESCH America, Inc., Applicator's Manual which contains complete instructions for the safe use of this pesticide. 3.6.8.2 Pre-Voyage Fumigation Procedures 1. Prior to fumigating a vessel for intransit cargo fumigation, the master of the vessel, or his representative, and the fumigator must determine whether the vessel is suitably designed and configured so as to allow for safe occupancy by the ship's crew throughout the duration of the fumigation. If it is determined that the design and configuration of the vessel does not allow for safe occupancy by the ship's crew throughout the duration of the fumigation, then the vessel will not be fumigated unless all crew members are removed from the vessel. The crew members will not be allowed to reoccupy the vessel until the vessel has been properly aerated and a determination has been made by the master of the vessel and the fumigator that the vessel is safe for occupancy. 2. The person responsible for the fumigation must notify the master of the vessel, or his representative, of the requirements relating to personal protection equipment*, detection equipment and that a person qualified in the use of this equipment must accompany the vessel with cargo under fumigation. Emergency procedures, cargo ventilation, periodic monitoring and inspections, and first aid measures must be discussed with and understood by the master of the vessel or his representative. `Personal protection equipment means a NIOSH/MSHA approved respirator or gas mask fitted with an approved canister for phosphine. The canister Is approved for use up to 15 ppm. SCBA or its equivalent must be used above 15 ppm or at unknown concentrations. 11 52368 0055
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The following Instructions are intended to provide general guidelines for typical fumigations. These instructlons are not Intended to cover every type of situation nor are they meant to be restrictive. Other procedures may be used if they are safe, effective and consistent with the properties of aluminum ~~ phosphide products. l 3.6.2 Fumigation of Farm Bins Leakage is the single most important cause of failures In the treatment of farm storages. Since these storages are often small, they usually have a higher leakage area in proportion to their capacity. Most wooden storage structures are so porous that they cannot be successfully fumigated unless they are completely tarped. Do not fumigate storages which will be entered by humans or animals prior to aeration. Do not fumigate areas which house sensitive equipment containing copper or other metals likely to be corroded by hydrogen phosphide gas. Seal the bin as tightly as possible. It is recommended that the surface of the grain be covered with poly after Phostoxin has been applied. Tarping the grain surface will greatly reduce the leak rate of the gas as well as reduce the amount of Phostoxin required, Only the volume below the tarp must be dosed. If not tarped, the entire volume of the storage must be treated, whether full or empty. Phostoxin tablets or pellets may be scattered over the surface or probed into the grain using a rigid PVC pipe about 5 to 7 feet in length and having a diameter of 1-1/4 inches. Use about 20-50 tablets or 100-250 pellets per probe. Spread the dose uniformly over the surface. Immediately cover the surface of the grain with a plastic tarpaulin. Place no more than 25 percent of the total dose at the bottom if the bin Is equipped with aeration fans. Caution: Make sure that the aeration duct is dry before adding Phostoxin. Addition of Phostoxln to water in an aeration duct may result In a fire. Seal the aeration fan with 4 mll plastic sheeting. Place fumigation warning signs on entrances to the bin and near the ladder. Following aeration of the bin, the surface of the grain may be sprayed with an approved protectant to discourage reinfestation. 3.6.3 Fumlgation of Flat Storages 1. Establish a plan for application of fumigant to the structure. Treatment of these types of storages may require considerable effort, therefore, sufficient manpower should be available to complete the work rapidly enough to (~ prevent excessive exposure to hydrogen phosphide gas. Vent flasks outside the storage, conduct fumigations during cooler periods and employ other work practices to minimize exposures. It Is often advisable to wear respiratory protection during application of fumigant to flat storages. Refer to the sections on Applicator and Worker Exposure and Respiratory Protection. 2. Seal any vents, cracks and other sources of leaks. 3. Apply tablets or pellets by surface application, shallow probing, deep probing or uniform addition as the bin Is filled. Storages requiring more than 24 hours to fill should not be treated by addition of fumigant to the commodity stream as large quantities of hydrogen phosphide may escape before the bin is completely sealed. Probes should be inserted vertically at Intervals along the length and width of the flat storage. Pellets or tablets may be dropped into the probe at intervals as it is withdrawn. Surface application may be used if the bin can be made sufficiently gas tight to contain the fumigant gas long enough for it to penetrate the commodity. In this instance, It is advisable to place about 25 percent of the dosage in the floor level aeration ducts. Check the ducts prior to addition of Phostoxln to make sure that they contain no liquid water. 4. Tarping the surface of the commodity is often advisable, particularly If the overhead of the.storage cannot be well sealed. 5. Lock all entrances to the storage and post fumigation warning placards, 3.6.4 Fumigation of Vertical Storages (concrete upright bins and other silos in which grain can be rapidly transferred) 1. Close all openings and seal all cracks to make the structure as airtight as possible. Prior to the fumigation, seal the vents near the bin top which connect to adjacent bins. 2. Pellets or tablets may be applied continuously by hand or by an automatic dispenser on the headhouse/gallery belt or into the fill opening as the commodity is loaded into the bin. An automatic dispenser may also be used to add Phostoxin into the commodity stream in the up leg of the elevator. 3. Seal the bin deck openings after the fumigation has been completed. 9 52368 0053

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