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Teflubenzuron

Dart, Diaract, Nemolt

SPRI Emission Reporting Threshold
0.001 Kg/yr Pollutant Emissions to Water
0.001 Kg/yr Pollutant Emissions to Waste Water
Disclaimer
This sheet is a generic summary, designed to give the reader a basic level of background information about the substance in question. Great care has been taken to represent as effectively and correctly as possible the broad range of (not necessarily consistent) information which is available from a variety of sources. The reader must accept therefore that this sheet has no legal status and cannot be relied upon in any legal proceedings. SEPA disclaims any responsibility or liability whatsoever for errors and omissions in this sheet.
What is it?
Pure Teflubenzuron is a white or pale yellow crystalline solid, which has a very faint smell. It melts at 223 degrees celsius. Teflubenzuron does not dissolve well in water, but is soluble in organic (carbon-containing) solvents and in fats.
What is it used for?
Teflubenzuron is used to control a wide range of insect pests and mites in fruit, vegetable, cereal and seed crops. It is also occasionally used to control sealice infestations in salmon. Teflubenzuron works by interfering with the synthesis of insect chitin, which is essential to their growth and development.
Where does it come from?
Releases of Teflubenzuron occur as a result of its application as an insecticide. It might also be released during its manufacture, transport and storage. There are not thought to be any natural sources of Teflubenzuron to the environment.
How might it affect the environment?
Teflubenzuron is classed as having low toxicity for mammals, fish and birds. Other aquatic organisms (particularly crustaceans and those living in sediments) may however suffer adverse effects if exposed. Teflubenzuron binds well to soil particles and is not mobile. When in soils, it is broken down by microbial activity, which depending on the soil type and conditions usually takes a few weeks. Due to its low solubility in water, Teflubenzuron released to water bodies is usually adsorbed onto particles or sediments and then broken down by microbes. Teflubenzuron is not accumulated by plants or animals (it is efficiently excreted before storage in body fat occurs). It is not considered likely that Teflubenzuron has any impact on the global environment.
How might exposure to it affect human health?
Teflubenzuron exposure mainly occurs in the occupational setting. Teflubenzuron can enter the body either by inhalation of air containing teflubenzuron, ingestion of contaminated food or water, or by dermal contact with teflubenzuron. There is little evidence for the effects of exposure to teflubenzuron on human health. However, animal studies indicate that teflubenzuron exposure may affect the liver. The International Agency for Research on Cancer has not designated teflubenzuron in terms of its carcinogenicity. However, exposure to teflubenzuron at normal background levels is unlikely to have any adverse effect on human health.
What steps are being taken to limit the potential impacts?
Releases of Teflubenzuron are controlled through the UK Pollution, Prevention and Control (PPC) Regulations, the Food and Environmental Protection Act (FEPA 1985) and the Control of Pesticides Regulations (COPR 1986). Teflubenzuron is listed for authorised use in the UK Pesticides Safety Directorate. At a European level, releases of Teflubenzuron are regulated through the Directive concerned with products used to protect plants from infestation (91/414/EEC) and it is also regulated through the European Directive concerned with levels of pesticide residues in foods (93/58/EC) - which in Scotland is implemented by the Maximum Levels in Crops, Foods and Feedstuffs regulations (MRL 2000).