What is the criteria that are used to determine is a substance should be as a hazardous waste?

A substance is classified as hazardous waste based on criteria such as its ignitability, corrosivity, reactivity, and toxicity. Specifically, it may be considered hazardous if it can catch fire easily, corrode materials, react violently with other substances, or leach harmful chemicals into the environment. Additionally, the concentration of harmful constituents in the waste and its potential impact on human health and the environment are also evaluated. Regulatory frameworks, such as those outlined by the Environmental Protection Agency (EPA) in the U.S., provide specific guidelines for these determinations.