Generally speaking, sulfuryl fluoride fumigants can be used for fumigation and insecticide of silk, leather, tobacco, handicrafts, cotton, chemical fiber fabrics, Chinese herbal medicines, bamboo and woodware, cultural relics and archives that are prone to pests. As far as the current use of domestic fumigants is concerned, the main application fields of sulfuryl fluoride include the food industry, customs entry-exit inspection, quarantine, construction industry, agriculture, etc.
As a new type of fumigant, sulfuryl fluoride is more and more widely used in fumigation, insecticide, and sterilization of goods, mainly because sulfuryl fluoride is an excellent fumigant with low residue and low toxicity. Moreover, sulfuryl fluoride fumigant has the characteristics of strong penetration, non-flammable, non-explosive, non-corrosive, especially suitable for low-temperature use, wide insecticidal spectrum, fast desorption, and safety to fumigants. , a commonly used domestic and international
Broad-spectrum fumigant can effectively kill insects and rodents of various life stages.
The main application fields of sulfuryl fluoride fumigant:
1. Food industry
Sulfonyl fluoride has a good killing effect on harmful organisms in food. Through fumigation tests on main foods such as dried fruits, grains, and flour, the research on relevant residues has been completed. The results showed that sulfuryl fluoride did not affect the taste and quality of food. In September 2003, Switzerland officially licensed sulfuryl fluoride for commercial fumigation of food and became the first country to use sulfuryl fluoride instead of methyl bromide in food fumigation. In January 2004, the U.S. Environmental Protection Agency also officially approved the use of sulfuryl fluoride in food fumigation registration, and in July 2005 formulated the residue standard of sulfuryl fluoride in food. In addition, Italy, the United Kingdom, Germany, Canada, France, and other countries have also approved the use of sulfuryl fluoride for the fumigation and storage of food. Relevant units in our country are actively studying the application of food fumigation. Therefore, sulfuryl fluoride instead of methyl bromide will become a development trend.
2. Customs entry-exit inspection and quarantine
At present, with the development of the world economy and trade, the throughput of container cargo transportation is also increasing day by day. At the same time, various pests, germs, and rodents are mixed in containers, goods, and their packaging, spreading everywhere, bringing catastrophic diseases, and endangering health safety and people's lives and health. Because sulfuryl fluoride has the advantages of low boiling point, high vapor pressure, strong permeability, broad-spectrum insecticide, and low toxicity, it can meet the requirements of import inspection and quarantine for chemicals with low toxicity, fast, and easy use, and will not cause ozone layer damage. adverse effects. In recent years, some ports in my country have gradually used sulfuryl fluoride to partially or completely replace methyl bromide for the fumigation of imported goods.
3. Construction industry
Sulfuryl fluoride is an excellent broad-spectrum fumigant, which has the characteristics of killing pests that spread in buildings, is non-combustible, and is non-corrosive. It penetrates quickly into building materials. Since sulfuryl fluoride was listed in the United States in 1961, it has been widely used for the fumigation of buildings and construction materials, such as the fumigation of houses, and other buildings (including museums, libraries, archives, churches, buildings, etc.), historical sites, etc. . So far, the construction industry is still its field of application. Compared with methyl bromide, sulfuryl fluoride penetrates building materials faster, kills insects more effectively, and leaves less residue after fumigation. In termite control, sulfuryl fluoride has replaced methyl bromide.
Sulfonyl fluoride can be used as a substitute for soil disinfection, and the Institute of Plant Protection, Chinese Academy of Agricultural Sciences uses it to control soil nematodes. Studies have shown that sulfuryl fluoride has strong vapor pressure and penetrating power, not only has a good control effect on nematodes in deep soil but also has a good control effect on soil-borne pathogens. At the same time, because sulfuryl fluoride is a gas at normal temperature, it is easy to use, and it is more convenient to use than methyl bromide when the temperature is low in winter. Therefore, sulfuryl fluoride is a promising alternative to methyl bromide for soil disinfection.