Imidacloprid is colorless crystals with a slight but characteristic odor.
The airborneconcentration that resulted in mortality to half of the test organisms (LC50) is >69 mg/m3 air in the form of an aerosol, and >5323 mg/m3 in air in the form of dust. It is considered non-irrita_ ng to eyes and skin, and non-sensitizing to skin, though some granular formulations may contain clay as an inert ingredient, which may act as an eye irritant. Other chemical and physical properties are shown in Table 2.1