In , the EPA established four Toxicity Categories for acute hazards of pesticide products, with "Category I" being the highest toxicity category ( toxicity class). Most human hazard, precautionary statements, and human

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statements are based upon the Toxicity Category of the pesticide product as sold or distributed. In addition, toxicity categories may be used for regulatory purposes other than

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, such as classification for restricted use and requirements for

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. In certain cases, statements based upon the Toxicity Category of the product as diluted for use are also permitted. A Toxicity Category is assigned for each of five types of acute exposure, as specified in the table below.

Overview

The four toxicity categories, from one to four are: *Toxicity category I is highly toxic and severely irritating, *Toxicity category II is moderately toxic and moderately irritating, *Toxicity category III is slightly toxic and slightly irritating, *Toxicity category IV is practically non-toxic and not an irritant.

Acute toxicity categories for pesticide products

In the following table, the leftmost column lists the route of administration.

References

{{DEFAULTSORT:Toxicity Category Rating Toxicology United States administrative law United States Environmental Protection Agency Environmental law in the United States Rating systems