Regulationcurrent
49 CFR 172.308
Authorized abbreviations.
Current as of 2026-08-18 Government source
eCFR editorial compilationAuthoritative but unofficial
View source (a)Abbreviations may not be used in a proper shipping name marking except as authorized in this section.#
(b)The abbreviation “ORM” may be used in place of the words “Other Regulated Material.”#
(c)Abbreviations which appear as authorized descriptions in column 2 of the § 172.101 table (e.g., “TNT” and “PCB”) are authorized.#