Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Agrochemical Functions
- Technologies
- Product Families
- Active Ingredient
Magnesium Phosphide - 56%
Inert Ingredients - 44%- Equation
DEGESCH metal phosphide fumigants are acted upon by atmospheric moisture to produce phosphine gas. The FUMI-CEL® and FUMI-STRIP® contain magnesium phosphide (Mg3P2) as their active ingredient and will liberate phosphine via the following chemical reaction: Mg3P2 + 6H2O g3Mg(OH)2 + 2PH3.
Features & Benefits
- Labeling Claims
Applications & Uses
- Markets
- Applications
- Applicable Crop
- Insecticide Target Species
- Dosage Rates For Commodities & Burrowing Pests
Phosphine gas is a mobile gas and will penetrate to all parts of the storage structure. Therefore, dosage must be based upon the total volume of the space being treated and not on the amount of commodity it contains. The same number of Plates is required to treat a 10,000-bushel silo whether it is empty or full of grain unless, of course, the surface of the commodity is sealed off by a tarpaulin.
Properties
- Physical Form
Regulatory & Compliance
- Chemical Inventories
Safety & Health
- Precautionary Statements – Hazards To Humans & Domestic Animals – Warning
Hazards to Humans and Domestic Animals
DANGER: Magnesium phosphide from DEGESCH FUMI-CEL®, FUMI-STRIP® or dust may be fatal if swallowed. Do not get the dust in eyes, on skin or on clothing. Do not eat, drink or smoke while handling magnesium phosphide fumigants. If a sealed container is opened, or if the material comes into contact with moisture, water or acids, these products will release phosphine gas which is an extremely toxic gas. If a garlic odor is detected, refer to the Industrial Hygiene Monitoring instructions found in Section 15.6 of this manual for appropriate monitoring procedures. Pure phosphine gas is odorless; the garlic odor is due to a contaminant. Since the odor of phosphine gas may not be detected under some circumstances, the absence of a garlic odor does not mean that dangerous levels of phosphine gas are absent. Observe proper re-entry procedures specified in Section 15.4 of this manual to prevent overexposure.- Environmental Hazards
This product is very highly toxic to wildlife. Non-target organisms exposed to phosphine gas will be killed. Do not apply directly to water or wetlands (swamps, bogs, marshes and potholes). Do not contaminate water by cleaning of equipment or disposal of wastes.
- Physical And Chemical Hazards
Magnesium phosphide-based fumigants such as Plates, Strips, Prepac Spot Fumigant and partially spent materials will release phosphine gas if exposed to moisture from the air or if it comes into contact with water, acids and many other liquids. Magnesium phosphide is considerably more reactive than is aluminum phosphide and will liberate gas more rapidly. This is particularly true in the presence of liquid water and at higher temperatures. Since phosphine gas may ignite spontaneously at levels above its lower flammable limit of 1.8% v/v (18,000 ppm), it is important not to exceed this concentration. Ignition of high concentrations of phosphine gas can produce a very energetic reaction. Explosion can occur under these conditions and may cause severe personal injury. Never allow the buildup of phosphine gas to exceed explosive concentrations. Do not confine spent or partially spent metal phosphide fumigants as the slow release of phosphine gas from this material may result in formation of an explosive atmosphere. Do not stack, pile, and/or allow magnesium phosphide fumigants to come into contact with liquids under any condition, except when deactivating partially spent or unreacted plates and strips using the wet method (see Section 23.2.a.). This may cause a temperature increase, accelerate the rate of gas production and confine the gas so that ignition could occur.
It is preferable to open containers of magnesium 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 that will rapidly exhaust contaminated air. When opening pouches of FUMI-CEL® or FUMI-STRIP®, point the pouch away from the face and body and tear or cut open the far end. Although the chances for a flash are very remote, never open containers of metal phosphide fumigants in a flammable atmosphere. These precautions will also reduce the fumigator’s exposure to phosphine gas. If containers are opened inside the structure to be fumigated, air monitoring must be conducted to ensure worker’s exposure to phosphine gas does not exceed the allowable limit of 8-hour Time Weighted Average (TWA) of 0.3 ppm or the 15-minute Short-Term Exposure Limit (STEL) of 1.0 ppm phosphine.
Pure phosphine 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 corrosion 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. Phosphine gas will also react with certain metallic salts and, therefore, sensitive items such as photographic film, some inorganic pigments, etc., should not be exposed. Immediately after addition of metal phosphide to the structure, turn off any lights and unessential electric equipment.
Storage & Handling
- Storage Instructions
- Do not contaminate water, food or feed by storing pesticides in the same areas used to store these commodities.
- Store DEGESCH FUMI-CEL® and FUMI-STRIP® in a dry, well-ventilated area away from heat, under lock and key. Post as a pesticide storage area.
- Do not store DEGESCH FUMI-CEL® and FUMI-STRIP® in areas where temperature may exceed 130oF.
- Do not store in buildings where humans or domestic animals reside. Keep out of reach of children.
- DEGESCH FUMI-CEL® and FUMI-STRIP® is supplied in gas-tight containers.
- The shelf life of DEGESCH FUMI-CEL® and FUMI-STRIP® is virtually unlimited as long as the containers are tightly sealed.