Why are chemicals listed in highlighted type in the ERG?

• A. They are the most common household chemicals
• B. They pose no hazard
• C. They present a poison inhalation hazard
• D. They require special handling only

Answer: (C)

The highlighted type flags a chemical as presenting a poison inhalation hazard. This means inhaling the vapors or gas can cause life-threatening effects or death, often more quickly than other routes of exposure. That’s why responders are alerted to prioritize respiratory protection and actions to prevent inhalation, such as rapid containment, adequate ventilation, and using appropriate PPE. The emphasis isn’t on how common the chemical is or on other hazards alone, but on the critical risk posed to breathing, which is why that specific designation is used.