Fumigation grain penetration phosphine dry ice
Manual of fumigation for insect control - Space fumigation at atmospheric pressure (cont.)
For the fumigant phosphine, gas tightness is particularly important because this gas can penetrate to escape much more easily and rapidly than other fumigants.
. of dry ice or from pressurized cylinders is applier) at the surface of the grain.
EPA1 - Cyanogen fumigants and methods of fumigation using cyanogen - Google Patents
Recently, phosphine generated from aluminium phosphide has been .. The use of dry ice is especially suitable during hot weather. similar to those used in the fumigation of grain by the recirculation technique.
These two fumigants penetrate well into accumulations of sorptive mill products and trash lying in a mill.
Description:Experiments have shown that cyanogen C2N2 can be used as such a fumigant, in the control of a range of biota, including insects, mites, nematodes, fungi and their spores, viruses, spiders, bacteria, moulds and rodents. It is also suitable for use on a variety of commodities, including grain, seeds, meats, fruit, vegetables, timber, plants, cut flowers and soil. It is shown that an efficacious concentration of cyanogen C2N2 as a fumigant leaves a very low residue and can be readily flushed from commodities. In particular, it has been observed that a mixture of cyanogen C2N2 and carbon dioxide have a synergistic effect, when applied to various biota. Throughout the specification, it should be noted that the term 'cyanogen' is defined as the gas at STP cyanogen, C2N2, essentially free from hydrogen cyanide and other cyanogenic compounds that is, compounds that give rise to hydrogen cyanide. More particularly, it concerns and fumigants as gas, or in solution which include the cyanogen C2N2 , and methods of fumigation using such gaseous and dissolved fumigants.
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