Final answer:
Bulk packaging authorization requirements for 'Nitrous oxide' are generally found in the regulations of governing bodies like the U.S. Department of Transportation's Hazardous Materials Regulations.
Step-by-step explanation:
The bulk packaging authorization requirements for "Nitrous oxide" can be found in the regulations set by organizations that oversee the transportation of hazardous materials. In the United States, for example, this information is typically outlined in the Department of Transportation's (DOT) Hazardous Materials Regulations (HMR). These regulations include packaging, labeling, and handling requirements specifically tailored for hazardous substances to ensure safety during transportation. These rules may vary between countries and regions, as each may have its own regulatory agency and safety protocols for such materials. As nitrous oxide is classified as a hazardous substance, due to its oxidizing properties and health effects at high exposures, it's essential that transportation regulations are strictly adhered to.