What is a Hazardous Chemical?
OSHA defines a "hazardous chemical" as any chemical classified as a physical hazard or health hazard, a simple asphyxiant, combustible dust, or a hazard not otherwise classified.
"Hazardous chemicals" covers a broader group of chemicals than hazardous substances, hazardous wastes, and hazardous materials.
The type and nature of hazardous chemicals are identified using OSHA's Hazard Communication Standard (HCS) pictograms (see image).
HCS Pictograms
What is the Difference?
When initially responding to an emergency release, it is critical to determine if the substance released is in fact hazardous. Whether the released matter is classified as a substance, chemical, material, or waste can be determined as the response continues.
Hazards come in many shapes and sizes. Many are easy to recognize, such as a burning building, while others can go unnoticed until it is too late, such as a release of clear, odorless gases. The first step to controlling such hazards is understanding the circumstances under which you may be exposed and the types of hazards associated with such circumstances.
Knowledge Check Choose the best answer for the question.
2-5. When initially responding to an emergency release, it is critical to _____.
You forgot to answer the question!