Which of the following is a typical example of Class 9 miscellaneous hazardous materials?

• A. Lithium-ion batteries, dry ice, magnetized metals, and auto-inflating devices (such as airbags)
• B. Explosives
• C. Radioactive materials
• D. Gases under pressure

Answer: (A)

Class 9 miscellaneous hazardous materials are a catch-all category for dangerous goods that don’t fit into the other hazard classes. A typical example includes lithium-ion batteries, dry ice, magnetized metals, and auto-inflating devices like airbags. This grouping reflects that these items require special handling and labeling because they don’t belong to the more specific classes, yet they pose significant risk in transport and storage. Explosives fall under Class 1, radioactive materials under Class 7, and gases under pressure under Class 2, so they aren’t classified as Class 9. Recognizing the Class 9 items helps responders apply the appropriate precautions and guidelines specific to miscellaneous dangerous goods.