§156.62 Toxicity Category.

This section establishes four Toxicity Categories for acute hazards of pesticide products, Category I being the highest toxicity category. Most human hazard, precautionary statements, and human personal protective equipment 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 labeling, such as classification for restricted use and requirements for child-resistant packaging. 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 in this paragraph.

                                Acute Toxicity Categories for Pesticide Products
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        Hazard Indicators                  I                  II                  III                 IV
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Oral LD[INF]50[/INF]............  Up to and           >50 thru 500 mg/ >500 thru 5,000  >5,000 mg/kg
                                   including 50 mg/    kg                  mg/kg
                                   kg
Dermal LD[INF]50[/INF]..........  Up to and           >200 thru 2000   >2000 thru       >20,000 mg/kg
                                   including 200 mg/   mg/kg               20,000 mg/kg
                                   kg
Inhalation LC[INF]50[/INF]......  Up to and           >0.2 thru 2 mg/  >2 thru 20 mg/   >20 mg/liter
                                   including 0.2 mg/   liter               liter
                                   liter
Eye irritation..................  Corrosive; corneal  Corneal opacity     No corneal          No irritation
                                   opacity not         reversible within   opacity;
                                   reversible within   7 days;             irritation
                                   7 days              irritation          reversible within
                                                       persisting for 7    7 days
                                                       days
Skin irritation.................  Corrosive           Severe irritation   Moderate            Mild or slight
                                                       at 72 hours         irritation at 72    irritation at 72
                                                                           hours               hours
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