A tolerance is not required for preplant soil fumigation uses of chloropicrin. Chloropicrin is a clear, colorless, oily liquid with a strong, sharp, highly irritating odor. For soil fumigation and wood treatment, chloropicrin is packaged in DOT 4BW240 steel cylinders and bulk tanks which may be pressurized. When used as a warning agent for methyl bromide, chloropicrin is packaged along with the methyl bromide in steel cylinders. When used as a structural fumigation warning agent for sulfuryl fluoride, chloropicrin is packaged in small plastic bottles in DOT approved overpacks.
Undiluted chloropicrin is highly toxic by ingestion or direct contact with the skin or eyes.
Inhalation exposure to very high levels, even if brief, can lead to pulmonary edema, unconsciousness and even death. No neoplastic or tumorigenic response was produced by chloropicrin in any species tested by the three routes of exposure. This was the highest dose tested. Chloropicrin is toxic to fish. However, because of its toxicity to mammals and invertebrates, it can be assumed that chloropicrin may be harmful to many nontarget organisms.