🔍 Key Concepts

• IMDG Code (International Maritime Dangerous Goods Code) class structure (Classes 1–9) • How dangerous goods are grouped: by primary hazard (explosive, flammable, toxic, etc.) • Difference between class number and division or packing group

💭 Think About

• Think about which type of hazard is considered severe enough to be listed first in a numbered classification system. • Recall which class covers substances that can detonate, deflagrate, or rapidly release energy and gases. • Ask yourself: which one of these options is usually associated with strict stowage, separation distances, and special marks like the orange ‘explosion’ symbol?

✅ Before You Answer

• Verify which class in the IMDG Code is labeled as Class 1 in the standard list of classes 1 through 9. • Confirm that flammable liquids and gases are assigned to other specific classes (not Class 1). • Check which type of hazard uses the orange hazard label with an explosion symbol and the number 1 at the bottom.