ALUMINIUM PHOSPHIDE
Aluminium Phosphide is a higly toxic inorganic compound with the chemical formula AIP.
It is mainly used as a fumigant for pest control and as a source of Phospine Gas (also used for fumigation). AIP crystals are dark grey to dark yellow in color. AIP is used as a rodenticide, insecticide, and fumigant for stored cereal grains. It is used to kill small verminous mammals such as moles and rodents. AIP is used as both a fumigant and an oral pesticide.
As a rodenticide, aluminium phosphide pellets are provided as a mixture with food for consumption by the rodents. The acid in the digestive system of the rodent reacts with the phospide to generate the toxic Phosphine Gas. It generates Phosphine gas according to the hydrolysis equation.
It is used as fumigant when other pesticide applications are impractical and when structures and installations are being treated, such as in ships, aircrafts, and grain silos. All of these structures can be effectively sealed or enclosed in a gas tight membrane, thereby containing and concentrating the Phospine fumes.
Fumigants are also applied directly to rodent burrows.
ZINC PHOSPHIDE
Zinc phosphide is an inorganic compound & a dark grey crystalline appearance, it is a combination phosphorus with zinc. Zinc phosphide (Zn3P2) Zinc phosphide also known as trizinc diphosphide, its heavy, finely ground, crystalline gray-black powder that is practically insoluble in water and alcohol.
Zinc phosphide is commercially available as bait pellets, granules, dust, and tracking powder, and it has an odor similar to that of garlic. The odor attracts rodents, when an animal eats the bait, the acid in the animal’s stomach turns the zinc phosphide into phosphine. Zinc phosphide is used for rodent control on crops including grapes, sugarcane, artichoke, sugar beet, alfalfa, barley, berries, oats, sugar maple, wheat, corn, and hay, also used on grasses such as home lawns, rangeland, and golf courses.
Zinc phosphide targets household rodent pests, such as mice and rats, in addition to field rodents including voles, ground squirrels, pocket gophers, prairie dogs, and jack rabbits. It is also uses as a tracking powder for the control of house mice. It is used on crop areas and on non-crop areas including lawns, golf courses, highway medians, and areas adjacent to wetlands.