Degradation of Fipronil (Termidor®) in Aqueous Solution Stored in Polyethylene Tanks Exposed to Sunlight or Shade
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Pest Management Professionals commonly use polyethylene or fiberglass tanks for mixing and applying termiticides. We investigated the stability of fipronil (Termidor® SC) (0.06%, 0.09% and 0.125% active ingredient) in aqueous solutions stored in polyethylene tanks under sun and shade for 2 week. Chemical analysis of tank-mixed solutions sampled at 0, 24, 48, 72, 168 and 336 h indicated that fipronil remained stable. Our data indicated that polyethylene tanks prevent fipronil from photodegradation and these tanks can be safely used for short term storage (up to 2 week) of liquid termiticides.
KeywordsFipronil Stability Polyethylene tanks Photolysis
We are grateful to BASF Inc. for supplying the Termidor® SC used in this study. We thank Drs. Robert Wright and Steve Danielson for reviewing an earlier version of this manuscript and Dr. Stephen Kachman for assistance with statistical analysis. This is published as contribution no. 1291, Department of Entomology-Institute of Agriculture and Natural Resources, University of Nebraska- Lincoln.
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