Which chemical is NOT considered part of the CERCLA-7?

The CERCLA-7, also known as the "List of Hazardous Substances," identifies specific substances that are recognized as particularly hazardous to human health and the environment under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). This list is crucial for cleanup efforts and regulations surrounding hazardous waste.

Cyanide, chrysene, and trichloroethylene are all included on the CERCLA-7 list due to their significant toxicity levels and potential adverse effects. Cyanide is known for its high toxicity and rapid effects on humans and ecosystems. Chrysene, a polycyclic aromatic hydrocarbon, is a known carcinogen with harmful environmental impacts. Trichloroethylene, a solvent commonly used in industrial applications, poses health risks, including carcinogenic effects.

Arsenic, while certainly a toxic substance, is not included in the CERCLA-7 list itself as one of the seven primary hazardous substances. This distinction is what makes arsenic the correct answer to the question regarding which chemical is not part of CERCLA-7, as it addresses misunderstanding about what defines hazardous substances under this particular regulatory framework. Understanding the specific chemicals listed in CERCLA-7 helps inform environmental health practices and guide sanitation professionals in identifying and managing hazardous materials