What must you consider regarding packaging for corrosive substances?

• A. They require only outer packaging.
• B. They can be shipped in any container without UN packaging.
• C. They require UN packaging with corrosion resistance; labeling and compatible inner/outer packaging.
• D. They do not require labeling if small amounts.

Answer: (D)

Corrosive substances must be packaged in UN-approved packaging that is resistant to corrosion. That means the outer packaging, and often the inner lining, are specifically designed to withstand the chemical's aggression and prevent leaks or breach during transport. The contents must be placed in a compatible inner packaging, and then that inner packaging must be placed inside an outer packaging that can handle normal handling as well as any reasonable accident conditions. In addition, proper labeling is required to communicate the hazard to anyone handling or inspecting the shipment, so that risks are understood and managed. Even small quantities still require appropriate labeling and a compliant UN packaging system to ensure safe transport.