What is required to be marked on an overpack?

The requirement to mark a UN ID number on an overpack is based on international regulations concerning the transportation of hazardous materials. The UN ID number serves as a unique identifier for the type of hazardous material contained within the overpack and is essential for safety and emergency response during transportation. This number helps ensure that first responders and other personnel can quickly identify the specific hazards associated with the contents of the overpack.

While other markings, such as hazard statements or emergency contact numbers, might be required under different circumstances, the UN ID number is specifically mandated to clearly indicate the classification of the dangerous goods inside the overpack. Properly marking the UN ID number is crucial not only for compliance with regulations but also for the safety of those handling and responding to incidents involving the shipment.