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Section §178.503: Marking of packagings

Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.

A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response.

Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View section 178.503 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
22-0057 Department of The Army Mr. Thomas Kudasz View
22-0101 Entegris Inc. Mr. James V. McManus
22-0123 R@K Testing Rich Kovaleski View
19-0059 Midway USA Bradley Spears View
18-0108 Hazmat Safety Consulting Robert Richard View
09-0097 Moeller Marine Products, Inc. Mr. Earnie Cook View
02-0238 Sandia National Laboratories RolandM. Kelley View
02-0232 gh Package &Product Testing and Consulting, Inc H. Perry Hock View
15-0082 Schlumberger Technology Corporation Mr. Paul Lezak View
11-0259 ENPAC, LLC Mr. Timothy Reed View
10-0211 CYTEC Industries, Inc. Mr. Andrew Bethmann View
13-0015R Joseph Hamill, P.E. U.S. Army ARDEC-Picatinny View
02-0139 Neeley Sales Co. Inc. Jason Perrone View
98-0594 Greif Bros. Corporation Mr. Joseph Grebe View
12-0034 Container-Quinn Testing Laboratories, Inc. A Division of Holmes Testing, Inc. Mr. Steven Powell View
11-0041 TEN-E Packaging Services, Inc. Mr. Robert J. Ten Eyck View
03-0098 RP Kelley Enterprises, Inc, Mr. Roland M. Kelley View
02-0164 Spartanburg Stainless Products, Inc Scott Rosenberge View
99-0283 Paperboard Products Mr. Jonathan A. Marks View
99-0246 Quintiles Simirex Mr. Christopher Swift View
98-0597 The Association of Container Reconditioners Mr. Paul Rankin View
02-0265 Sandia National Laboratories Roland M. Kelley View
12-0071 Industrial Packaging Alliance of North America Mr. John McQuaid View
10-0033 Industrial Packaging Alliance of North America Mr. John McQuaid View
13-0087 Military Surface Deployment and Distribution Command Mr. Daniel A. Maham View
04-0112 Innovative Container Mr. Chad Odom View
04-0261 Dangerous Goods Advisory Mr. Alan I. Roberts View
10-0090 Industrial Packaging Alliance of North America Mr. John McQuaid View
03-0046 Specialty Industries Mr. Marc Caron View
04-0170 Packaging Corporation of America Mr. Michael Gilgenbach View
07-0060 Sandia National Laboratories Mr. Leighton Ford View
07-0004 Volunteer Drum R. Jack Oody View
11-0085 Triumvirate Environmental Mr. Thomas Goss View
09-0034 Challenge, Inc.                                                     Mr. Keith Hauser                                                         View
98-0277 Toyota Motor Sales, U.S.A.,Inc. Anthony P. Willson View
01-0198 Aceto Corporation Mr. Simone A. Yearwood View
14-0136 5N Plus Wisconsin, Inc. Ms. Laura Buholca View