If a "Special Provision" is listed in column 13, you are required by law to implement it when preparing the package. You must follow all special provisions in addition to all performance packaging requirements.
Using "Phosphoric Acid, solution" as an example, Special Provision A7 states that if phosphoric acid is to be offered for transport by aircraft, then "Steel packaging must be corrosion-resistant or have protection against corrosion." If the package is to be offered for transport by ground or air, Special Provision N34 states, "Aluminum construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material."
