Class 9: Miscellaneous Dangerous Goods/Hazardous Materials and Articles

These are materials that present a hazard during transport but do not meet the definition of any other hazard class. Miscellaneous hazardous materials include the following:

Any material that has an anesthetic, noxious, or other similar property that could cause extreme annoyance or discomfort
Any material that is not included in any other hazard class but that is subject to DOT requirements (e.g., elevated temperature material, hazardous substance, hazardous waste, marine pollutant)

Examples of Class 9 materials include polychlorinated biphenyls, adipic acid, and lithium batteries.

Three images, the top left is a yellow square with black text reading Caution PCBs at the top. The right image is multiple black lithium batteries. The image below is a large white bulk container with the words Adipic Acid in large green letters.