Understanding Chemical Safety: What is Class 4 Toxicity?
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4 min read
The U.S. Environmental Protection Agency (EPA) evaluates products like disinfectants and pesticides for acute toxicity, assigning them a category from I (most toxic) to IV (least toxic) [1.7.5]. So, **what is class 4 toxicity?** It represents the lowest level of acute toxicity, meaning a substance is considered practically non-toxic and not an irritant [1.2.2].
