What labeling would you expect on a package containing a Class 3 flammable liquid?

• A. Only a Class 3 hazard label
• B. A Class 3 hazard label, the UN number and proper shipping name, plus any required subsidiary hazard labels.
• C. Only UN number
• D. No label needed

Answer: (D)

Hazard communication on packages is about clearly identifying the danger and what material is inside so handlers and emergency responders know how to act. For a Class 3 flammable liquid, you must display the Class 3 flame hazard label, include the UN number, and show the proper shipping name on the package. If the material has any subsidiary hazards, those additional hazard labels must also be added. This combination provides both the general risk (flammability) and the exact material identity, plus any extra risks that need special handling. A label that shows only the hazard class or only the UN number is incomplete, and saying no label is needed conflicts with hazmat labeling rules.