27 C.F.R. § 19.601 Marks on containers of specially denatured spirits.
Title 27 - Alcohol, Tobacco Products and Firearms
(a) General. Each package, case, and encased container of specially denatured spirits filled on bonded premises shall be marked or labeled to show: (1) Quantity in gallons; (2) Serial number or lot identification number; (3) Plant number of the proprietor; (4) Designation or abbreviation of the specially denatured spirits by kind (alcohol or rum); (5) Formula number; and (6) Proof of spirits which were denatured at other than 190 degrees of proof. (b) Bottles. Each bottle shall be marked or labeled to show the information prescribed in paragraph (a) (1), (3), (4), (5), and (6) of this section. (c) Alternate formulations. When spirits are denatured under a formula authorizing a choice of types and quantities of denaturants, the container or case shall be marked to show actual types and quantities of denaturants used. (Sec. 201, Pub. L. 85–859, 72 Stat. 1360, as amended (26 U.S.C. 5206))
Title 27: Alcohol, Tobacco and Firearms
PART 19—DISTILLED SPIRITS PLANTS
Subpart R—Containers and Marks
Marks
§ 19.601 Marks on containers of specially denatured spirits.

