Magnesium Phosphide
Due to their characteristics, formulations based on magnesium phosphide (Mg3P2), are the fumigant of choice for quick fumigations even under suboptimal conditions.
Mg3P2 is created by the fusion of magnesium and yellow phosphorus. In contact with ambient air and humidity the very efficient phosphine gas is developed and released.
Formulation
Pellets
Pellets contain of 66% inert magnesium phsophide as active substance and 34% inert components, mainly ammonium carbamate amongst others, that facilitate controlled outgassing of phosphine.
One pellet has a weight of 0.6 g and releases 0.2 g phosphine gas.
Round Tablets
Round Tablets contain of 66% inert magnesium phosphide as active substance and 34% inert components, mainly ammonium carbamate amongst others, that facilitate controlled outgassing of phosphine.
One round tablet has a weight of 3 g and releases 1 g phosphine gas.
Plates / Strips
Plates and strips contain of 56% magnesium phosphide as active substance and inert components that facilitate controlled outgassing of phosphine. This formulation does not contain ammonium carbamate.
The formulation is integrated in a flexible plastic matrix, coated with special paper that is permeable to water vapour.
One plate has a weight of 117 g and releases 33 g phosphine gas.
One strip contains of 20 Plates in a chain/strip, has a weight of 2,340 g and releases 660 g phosphine gas.
Packaging
Pellets and Round Tablets
UN-approved aluminium flasks in different flask sizes with specially sealed aluminium lid and plastic screw cap.
Content:
100 g, 250/300 g, 900/1,000 g net
Plates / Strips
The plates/strips are packed in gas-tight aluminium foil pouches and are finally packed in UN-approved metal drums for transportation and storage.
Content:
120 plates á 117 g or 6 strips ea. 2,340 g per drum.
Application
Pellets and Round Tablets
The outgassing of the pellets and round tablets begins after a short delay once the fumigant gets into contact with product or ambient moisture. The outgassing rate depends on temperature and humidity levels.
The smaller dimensions of the pellets lead in a somehow more rapid outgassing compared to tablets.
All developmental stages of stored product pests can be controlled with Phosphine.
The highly potent gas penetrates quickly into the commodities, also the ones which are densely packed and nearly all packaging materials.
Magnesium Phosphide degasses quicker than aluminium phosphide. The max. phosphine concentration can be reached already after 24 to 36 hours. Compared to this aluminium phosphide containing fumigants in the same time are degassed to the extent of approximately 72 % (at 60 % rel. humidity and 20° C).
Since phosphine reacts with noble metals such as silver, gold, copper and their compounds, these substances must be provided with sufficient protection during fumigation.
Fields of application:
Use of pellets and round tablets is not restricted to certain storage types as long as the storage unit can be made appropriately gas-tight. They are used in silos, on ships, in warehouses, containers, etc. and can be placed in the commodity to be treated manually or by using the Detia Freyberg Automatic Dispenser.
In addition to this and in opposite to aluminium phosphide containing fumigants, dust residues of these pellets and round tablets contain practically contain a practically lower percentage of non-degassed metal phosphides.
Plates / Strips
The material enables additional control on the outgassing rate, and the special paper with the matrix must never be opened during use. Time-delayed outgassing of phosphine begins as soon as the plates/strips are removed from the aluminium foil pouch and gets into contact with product or ambient moisture. The outgassing rate depends on temperature and humidity levels.
This ensures an additional safety for the fumigation personnel.
All developmental stages of stored product pests can be controlled with Phosphine.
The highly potent gas penetrates quickly into the commodities, also the ones, which are densely packed as well as nearly all packaging materials.
Since phosphine reacts with noble metals such as silver, gold, copper and their compounds, these substances must be provided with sufficient protection during fumigation.
Safety
Phosphine is also highly toxic to humans and warm-blooded animals. It is therefore absolutely necessary to comply with the relevant safety measures. To raise the level of safety when the products are applied, special components have been included in the formulation to delay outgassing. The safety of Detia Freyberg fumigants is further optimized by the simplicity of their application. The products may only be used by specially trained personnel or under their supervision and always by following country-specific regulations/legislations.
Use biocides safely. Always read the label and product information before use.
Use plant protection products safely. Always read the label and product information before use.