Class 9: Miscellaneous Hazardous Materials

The DOT defines a miscellaneous hazardous material as a material that presents a hazard during transportation, but is not included in any other hazard class. These materials are any material that has anesthetic, noxious, elevated-temperature substances, hazardous wastes and marine pollutants, and magnetized materials. ORM-D materials are also class 9.

Figure 22 Hot water when transported is an elevated temperature material an is therefore Class 9 along with a class 9 placard.