What is not required on a package containing a flammable substance?

The requirement for a special handling tag is not mandated for packages containing flammable substances. While flammable materials must adhere to strict labeling and documentation standards to ensure safety during transportation, the specific use of a special handling tag is not universally required. Instead, there are other critical elements that must be present: labeling that clearly indicates the flammability hazard, a proper identification number for the substance being transported, and a declaration of contents to inform handlers and emergency responders about the nature of the material. These requirements are essential for compliance with safety regulations and to mitigate risks associated with flammable materials during transport.