Which packing group corresponds to serious toxicity risk for Division 6.1?

• A. Packing Group 3
• B. Packing Group 2
• C. Packing Group 1
• D. Packing Group 4

Answer: (B)

Understanding how packing groups signal hazard for Division 6.1 helps you choose the right packaging level. For toxic substances, three packing groups indicate increasing hazard: the top level is for the most dangerous substances, the middle level for serious toxicity, and the lowest level for less danger. When a substance is described as having a serious toxicity risk, it falls into the middle category, which is why that option is the best choice. This means it requires packaging that provides substantial protection, but not the maximum protection reserved for the highest danger. The other levels correspond to either extreme toxicity or relatively lower toxicity, and require different packaging standards and handling.