USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #18-0008

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: The Chemours Company

Individual Name: Randolph Martin

Location State: DE Country: US

View the Interpretation Document

Response text:

Randolph Martin
Sr. Consultant
The Chemours Company
1007 Market Street, Room 3088
Wilmington, DE  19899

Reference No. 18-0008

Dear Mr. Martin:

This letter is in response to your January 10, 2018, email requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to a manufacturer’s dual marking of containers.  Specifically, you ask whether it is permissible for a container to be dual marked as both a United Nations specification 1A1 (UN 1A1) non-removable head steel drum and either a Department of Transportation specification 2Q (DOT 2Q) inner, non-refillable metal receptacle.

The answer is yes, provided that the packaging meets the design and testing standard in the HMR for both package specifications, in all aspects.  For example, the 1 liter (L) maximum capacity specified for DOT 2Q containers is smaller than the 450 L maximum capacity specified for UN 1A1 drums (see §§ 178.33a-2 and 178.504, respectively).  Therefore, a dual marked UN 1A1 drum and DOT 2Q container could not exceed 1 L capacity.  The requirements for DOT 2Q design and testing are specified in Part 178 Subpart B.  The requirements for UN 1A1 drum design and testing are specified in Part 178 Subparts L and M.

I hope this information is helpful.   Please contact us if we can be of further assistance.



T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division

Regulation Sections

Section Subject
178.33a Specification 2Q; inner nonrefillable metal receptacles
178.504 Standards for steel drums