If you see a green diamond with the number 1005 on a transportation vehicle, what substance is inside the tank?

The presence of a green diamond with the number 1005 indicates that the substance inside the tank is anhydrous ammonia. In the United States, the Department of Transportation (DOT) uses this system to identify hazardous materials. The number 1005 specifically corresponds to ammonia, which is a common refrigerant used in industrial settings.

This identification is crucial for safety and regulatory compliance, providing first responders and workers with immediate information about the chemical they may be dealing with in case of an emergency. Understanding the numbering system can help prevent accidents and ensure that proper safety measures are followed when handling or transporting ammonia.

In contrast, the other substances listed have different identifying numbers according to DOT regulations. Carbon Dioxide, Propane, and Natural Gas each have their own unique identifiers, which helps distinguish them from ammonia during transportation. Familiarity with these designations is essential for anyone working in industrial refrigeration, ensuring safe and effective handling of various refrigerants.