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iXTOXNET PIP - ESFENVALERATF Page 1 of 11./ EXTOXNET Extension Toxicology Network Pesticide Information Profiles Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the lniversity of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan tate University. Major support and funding was provided by the USDA/Extension Service/National Agricultural esticide Impact Assessment Program. ;XTOXNET primary files maintained and archived at Oregon State University .evised June 1996 Esfenvalerate 'rade and Other Names: Trade names for the older fenvalerate compounds include Ectrin, Pydrin, Sanmarton, umifly, Sumiflower, and Sumitick. Trade names for the new product, esfenvalerate, include Asana XL, Halmark, and umi-alfa. The compound may also be listed as S-fenvalerate. tegulatory Status: Most products containing esfenvalerate are General Use Pesticides (GUPs). The emulsified mcentrate formulation is a Restricted Use Pesticide (RUP)because of possible adverse effects in aquatic organisms. •sfenvalerate is a moderately toxic pesticide in EPA toxicity class I1; products containing it must contain the Signal Woi DARNING on the label. :hemical Class: pyrethroid ntroduction: Esfenvalerate is a synthetic pyrethroid insecticide which is used on a wide range of pests such as moth ies,beetles, and other insects. It is used on vegetable crops, tree fruit, and nut crops. It may be mixed with a wide varier f other types of pesticides such as carbamate compounds or organophosphates. Esfenvalerate has replaced the naturally ccurring compound fenvalerate (to which it is almost identical) for use in the U.S. Much of the data for fenvalerate is pplicable to the pesticide esfenvalerate because the two compounds contain the same components. The only differences i the two products are the relative proportions of the four separate constituents (isomers). Esfenvalerate has become the referred compound because it requires lower applications rates than fenvalerate, is less chronically toxic, and is a more owerful insecticide. The compound contains a much higher percentage of the one insecticidally active isomer(84% for ;fenvalerate and 22% for fenvalerate). ormulation: It may be mixed with a wide variety of other types of pesticides such as carbamate compounds or rganophosphates. Esfenvalerate has replaced the naturally occurring fenvalerate( to which it is almost identical) for use i the U.S. Much of the data for fenvalerate is applicable to the pesticide esfenvalerate because the two compounds :)ntain the same components. The only differences in the two products are the relative proportions of the four separate :)nstituents (isomers). Esfenvalerate has become the preferred compound because it requires lower applications rates th,, ;nvalerate, is less chronically toxic, and is a more powerful insecticide. The compound contains a much higher ttp://extoxnet.orst.edu/pips/esfenval.htm 6/25/20(