Methyl Iodide - Risk Characterization Process

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State law (Food and Agricultural Code, FAC, sections 13121-13130) requires DPR to review the toxicology database of all pesticide active ingredients. In addition, FAC section 12824 requires DPR to do a thorough evaluation of a new active ingredient before registration. After a preliminary review of toxicology studies, DPR identified methyl iodide (iodomethane) as having potential adverse health effects which a more in-depth appraisal of risk could examine before a registration decision was made. During the risk characterization process, DPR evaluates the significance of the adverse effects. If DPR decides that use of a pesticide results in a significant adverse effect, action must be taken to mitigate the adverse effect. This may include use restrictions or denial of registration.