(a) Durability. Each label, whether printed on or affixed to a package, must be durable and weather resistant. A label on a package must be able to withstand, without deterioration or a substantial change in color, a 30-day exposure to conditions incident to transportation that reasonably could be expected to be encountered by the labeled package.
CFR 49-172.407-2013 history
2013CFR 49-172.407-2013 Transportation. Part172:Hazardous materials table, special provisions, hazardous materials communications, emergency response information, training requirements, and security plans. Section172.407:Label specifications.