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EXTOXNET PIP -DIAZINON Page 1 of 4 EXTOXNET Extension Toxicology Network Pesticide Information Profiles A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program. EXTOXNET primary files maintained and archived at Oregon State University Revised June 1996 Diazinon Trade and Other Names: Trade names of this product include Basudin, Dazzel, Gardentox, Kayazol,Knox Out, Nucidol, and Spectracide. Diazinon may be found in formulations with a variety of other pesticides such as pyrethrins, lindane, and disulfoton. Re_qulatory Status: Diazinon is classified as a Restricted Use Pesticide (RUP) and is for professional pest control operator use only. In 1988, EPA canceled registration of diazinon for use on golf courses and sod farms because of die offs of birds that often congregated in these areas. It is classified toxicity class II -moderately toxic, or toxicity class III - slightly toxic, depending on the formulation. Products containing diazinon bear the Signal Word WARNING or CAUTION. Chemical Class: organophosphate Introduction:Diazinon is a nonsystemic organophosphate insecticide used to control cockroaches, silverfish, ants, and fleas in residential, non-food buildings. Bait is used to control scavenger yellow jackets in the western U.S. It is used on home gardens and farms to control a wide variety of sucking and leaf eating insects. It is used on rice, fruit trees, sugarcane, com, tobacco,potatoes and on horticultural plants. It is also an ingredient in pest strips. Diazinon has veterinary uses against fleas and ticks. It is available in dust, granules, seed dressings, wettable powder, and emulsifiable solution formulations. Formulation: It is available in dust, granules, seed dressings, wettable powder, and emulsifiable solution formulations. Toxicological Effects: . Acute toxicity: Toxic effects of diazinon are due to the inhibition of acetylcholinesterase, an enzyme needed for proper nervous system function. The range of doses that results in toxic effects varies widely with formulation and with the individual species being exposed. The toxicity of encapsulated formulations is relatively low because diazinon is not released readily while in the digestive tract. Some formulations of the compound can be degraded to http://extoxnet.orst.edu/pips/diazinon.htm