41 CFR 102-40.45: -40.45 Sales.

You may sell personal property with special handling requirements provided you:

(a) Comply with applicable Federal, State, and local laws and regulations;

(b) Follow applicable precautions, such as proper packaging, appropriate labeling with warning signs, and allowing proper safeguards during inspection;

(c) Advertise and conduct sales of such property separately from other sales;

(d) Store and display such property in a safe and controlled manner as required; and

(e) Indicate if the property is being sold only for scrap, and/or if there are any use requirements or restrictions.