Packing instructions and quantity limits of hazardous materials allowed on aircraft can be found in the List of Dangerous Goods (Section 4) of the IATA Dangerous Goods Regulations. Packing instructions detail the types of inner and outer packagings permitted on aircraft as well as instructions on how to package specific materials.
Only containers that meet United Nations performance standards can be used in hazardous materials shipping. The following marking is an example of what must be present on all approved packaging:
The outer packaging of all hazardous material shipments (other than Limited Quantity or Excepted Quantity shipments) must bear the UN specification marking.
Next to the performance standard you will see specific gravity and weight limits. The weight limits refers to the maximum weight in kilograms of all solid materials in a package. An “S” will follow this value indicating the package is to be solely used for shipping solid materials. A maximum specific gravity is given for containers suitable for liquids. The specific gravity is followed by the hydrostatic test pressure to the nearest 10kPa.
Marking & Labeling
Examples of hazard labels can be found here. The following are IATA approved vendors for UN compliant packaging and labels: