Which entity regulates the packaging and transportation of N2O?

The correct regulation of the packaging and transportation of nitrous oxide (N2O) falls under the jurisdiction of the US Department of Transportation (DOT). The DOT is responsible for ensuring safe and efficient transport of hazardous materials, which includes gases like nitrous oxide. They set the standards for transport containers, labeling requirements, and transportation methods to ensure that such materials are handled in a way that minimizes risk to health and safety during transit.

This responsibility includes specific regulations that govern how nitrous oxide is packaged, marked, and transported to prevent accidents and ensure public safety. For example, DOT guidelines may dictate the type of containers that can be used for N2O and how they should be stored in transport vehicles.

The other entities listed, while they have important regulatory roles, do not specifically focus on the transportation of nitrous oxide. The Environmental Protection Agency (EPA) primarily addresses environmental regulations; the Food and Drug Administration (FDA) oversees food and drug safety, and the Occupational Safety and Health Administration (OSHA) focuses on workplace safety standards and regulations. These roles may intersect with aspects of nitrous oxide use, but the specific regulations regarding packaging and transportation are clearly under the domain of the DOT.