WAC 296-52-71040
WAC 296-52-71040. Shipping container
(1) Small arms smokeless powder (Division 1.2 or 1.3) must be packed, stored, and transported in U.S. DOT approved shipping containers.
(2) All smokeless powder must be stored in shipping containers made for smokeless powder (as required by 49 C.F.R. 173.93).