What is the characteristic of substances classified as P-listed?

Substances classified as P-listed are identified as toxic and acutely hazardous. This classification is part of the Environmental Protection Agency (EPA) regulations concerning hazardous waste. P-listing specifically refers to particular chemicals that are considered to pose a deal of risk to human health and the environment due to their acute toxicity.

For example, these substances can cause severe health effects with even small amounts being harmful, prompting strict regulations around their disposal and handling. This is contrasted with other classifications of hazardous waste, such as ignitable materials or corrosive substances, which focus on different properties and risks associated with those substances. Non-hazardous materials, on the other hand, do not fall under these stringent regulations and do not bear the same risks as P-listed substances.