Fumigation grain

McMahon BM. 1971. Analysis of commercially fumigated grains for residues of organic fumigants. 

The extremely toxic and flammable gas phosphine is safely and conveniently generated for the fumigation of grain in sacks or bins from 3-g tablets containing aluminum phosphide and ammonium carbamate which produce 1 g of phosphine in the presence of moisture. 

The primary use for methyl bromide is in the extermination of insect and rodent pests. Methyl bromide is used in space and stmctural fumigation except in California. The material is suitable for the fumigation of food commodities such as dried fmits, grain, flour, and nuts, and the faciHties in which these foods are processed or stored, as weU as for tobacco and many kinds of nursery stock. The usual dosage is 2—4 kg/28 m for 12—24 h. In soil fumigation methyl bromide controls weed seeds, nematodes, wireworms, and soil fungi. The usual dosage is 0.5—1 kg/9 m for 24 h at 16°C and above (82). 

Oxirane is used as a fumigant for grain and a sterilant e.g. for space vehicles bound for putative abodes of life), but mainly for the manufacture of 1,2-ethanediol ( ethylene glycol ), emulsifiers, plastics and resins (below), plasticizers, synthetic rubber and synthetic fibers. Methyloxirane is used mainly to make detergents, hydraulic fiuids and lubricants. 

Prior to 1977, trichloroethylene was used as a general and obstetrical anesthetic grain fumigant skin, wound, and surgical disinfectant pet food additive and extractant of spice oleoresins in food and of caffeine for the... 

Heikes DL, Hopper ML. 1986. Purge and trap method for determination of fumigants in whole grains, milled grain products, and intermediate grain-based foods. J Assoc Off Anal Chem 69 990-998. 

Used industrially as a solvent and for organic synthesis as a fumigant for stored produce and grain. 

Phosphine gas is registered in the United States for use inside food processing facilities. Currently, it is used primarily for fumigation of bulk stored grain. While there are several reports of phosphine resistance in stored product insect populations in Asia (Subramanyam and Hagstrum, 1996), there are few published data regarding resistance in the United States. 

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