Which statement about cylinder labeling is true?

• A. Shipping name only
• B. Hazard class only
• C. Manufacturer's name and date
• D. Shipping name and hazard class

Answer: (D)

Cylinder labeling is all about quickly communicating both what the cylinder contains and how dangerous it is. The shipping name identifies the substance inside (for example, Propane), so you know what material you’re dealing with. The hazard class tells you the type of danger it poses (such as a flammable gas), guiding safe handling, storage, and emergency actions. Together, these two pieces of information let you recognize the material and understand the risk at a glance. Labels that only show the substance or only the hazard class don’t provide the full picture, and information about the manufacturer or date isn’t the primary hazard communication on the label.