Mont. Code Ann. § 50-78-206
Labels
50-78-206 . Labels. (1) An employer or distributor may not remove or deface any existing label on a container of a hazardous chemical, except that the chemical name may be concealed under trade secret protection as provided in 50-78-205 .
(2) Any portable container intended for an immediate transfer of a hazardous chemical is not required to be labeled.