What Is Hazardous Material? - NFPA
NFPA 400 defines hazardous material as any chemical or substance that is a physical hazard material or a health hazard material. Hazardous materials are then categorized based on the physical or health hazard they present.

Journal of Hazardous Materials | ScienceDirect.com by Elsevier
We publish full-length research papers, review articles, and perspectives that improve our understanding of the hazards and risks that certain materials pose to public health and the environment.

What Is a Hazardous Material? Definition and Classes
A hazardous material is any substance or material that poses an unreasonable risk to health, safety, or property, particularly when being transported, stored, or used.

What is a hazardous material? - The Institute for ...
What is a Hazardous Material? A hazardous material, or HAZMAT, is any substance or material that, when improperly handled, stored, or transported, poses an unreasonable risk to health, safety, and property.

Dangerous goods - Wikipedia
Dangerous goods are substances that are a risk to health, safety, property or the environment during transport. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials (syllabically abbreviated as HAZMAT or hazmat).

Hazardous Materials Identification - NFPA
Hazardous materials are defined in NFPA codes and standards as chemicals or substances that are classified as a physical hazard or a health hazard.

Identifying Hazards | US EPA
The federal government has established a system of labeling hazardous materials to help identify the type of material and threat posed. Summaries of information on over 300 chemicals are maintained in the Envirofacts Master Chemical Integrator.