# Steve Laughlin — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 23-0005
- **title:** Steve Laughlin — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2023-04-19
- **effective on:** Not available
- **summary:** 23-0005 concerning 171.2, 172.101, 172.202, 172.402, 173.128, 173.22, 173.225.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-23-0005.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-23-0005.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-23-0005
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/docs/standards-rulemaking/hazmat/interpretations/77521/230005.pdf
**body:**

<<<PAGE 1>>>

April 19, 2023
Steve Laughlin
Regulatory & Waste Specialist
519 Hillcrest Lane
Lindenhurst, IL 60046
Reference No. 23-0005
Dear Mr. Laughlin:
This letter is in response to your January 19, 2023, email and subsequent discussion with a
member of my staff requesting clarification of the Hazardous Materials Regulations (HMR; 49
CFR Parts 171-180) applicable to the classification of hazardous materials and assignment of
subsidiary hazards to existing entries on the § 172.101 Hazardous Materials Table (HMT).
We have paraphrased and answered your questions as follows:
Q1. You ask whether it is permissible for a shipper to classify a material differently than
indicated on the manufacturer’s safety data sheet (SDS) if the shipper knows that the SDS
classification is incorrect.
A1. The answer is yes. In accordance with § 173.22, it is the shipper’s responsibility to
classify a hazardous material. As provided in § 171.2(b), each offeror—i.e., the shipper—
may rely on information provided by another offeror, unless that offeror knows or, a
reasonable person, acting in the circumstances and exercising reasonable care, would
have knowledge that the information provided by another offeror is incorrect. If an
offeror has knowledge that the information provided by another entity regarding the
classification of a hazardous material is incorrect, they must accurately classify the
material prior to offering it for transportation.
Q2. You ask whether a shipper is required to label a package with a subsidiary hazard label if
the shipper knows that the material meets that subsidiary hazard classification, even if
that hazard is not included in the § 172.101 HMT entry for the material.
A2. The answer is yes. It is the shipper's responsibility to determine if a material has
subsidiary hazards that require subsidiary hazard labels. As provided in § 172.101(g),
provisions in § 172.402 may require that a label other than that specified in Column 6 of
the HMT be affixed to the package in addition to that specified in Column 6.
CONCUR:
ROUTING
PHH-11
INITIALS
EP
DATE
2/8/2023
ROUTING
PHH-11
INITIALS
DDK
DATE
2/9/2023
ROUTING
PHH-10
INITIALS
MBN w/
edits
DATE
2/10/2023
ROUTING
PHH-21
INITIALS
AWD
DATE
3/13/2023
ROUTING
PHH-21
INITIALS
RJV
DATE
3/15/2023
ROUTING
Field Ops
INITIALS
KM (via
email)
DATE
3/29/2023
ROUTING
PHC-10
INITIALS
BSB
DATE
4/14/23

<<<PAGE 2>>>

Please note there are circumstances where it is impermissible to modify an entry with
additional hazards, including materials classified by an approval from the Associate
Administrator and entries with a “+” sign in Column 1 of the HMT, unless authorized by
the Associate Administrator (see § 172.101(b)(1)).
Q3. You ask whether the shipper's responsibility to determine if a material has additional
subsidiary hazards applies to all hazardous materials. In particular, you ask whether a
Division 5.2 organic peroxide that does not have “Note 13” entered in association with
the technical name in the § 173.225 Table 1 to paragraph (c) – the Organic Peroxide
Table – may be labeled with a Class 8 subsidiary hazard label if the shipper knows that
the material meets the definition of a Class 8 corrosive material.
A3. The answer is yes, unless the material has been classified and approved for transportation
by the Associate Administrator in accordance with the procedures of § 173.128. If a
shipper has knowledge that an organic peroxide listed by technical name in the § 173.225
Organic Peroxide Table meets the definition of a Class 8 corrosive material, they must
affix a Class 8 label and describe the material accordingly, even if the Organic Peroxide
Table entry does not include “Note 13.”
If a shipper has knowledge that an organic peroxide material approved by the Associate
Administrator meets the definition of a Class 8 corrosive material—but the classification
approval document does not list this hazard—the person should submit the information to
the Associate Administrator for review and evaluation.
Q4. You ask whether a shipper is required to provide supporting evidence of additional
subsidiary hazards not included in the § 172.101 HMT entry to accompany the shipment.
And after transportation is completed, you further ask whether a shipper is required to
provide the supporting evidence to an authorized official of a Federal, State, or local
government agency upon request.
A4. The HMR do not require that records of classification determination be made available
during transportation. However, providing supporting evidence—during shipment—of a
classification determination in this circumstance may reduce confusion and the likelihood
of a frustrated shipment. Maintaining easily accessible copies of such records is
encouraged to promote clarity. Please note that an agency action, such as the Associate
Administrator’s classification approval of an explosive, self-reactive, or organic peroxide
material may require that data associated with the classification of the material be
retained by the manufacturer, test laboratory, or other party.
Lastly, as part of an enforcement action, a shipper may be required to provide the records
of classification determination be made available to an authorized official of a Federal,
State, or local government agency upon request. Please see 49 CFR Part 109 for
procedural requirements that PHMSA investigators will follow in an investigation.
CONCUR:
ROUTING
PHC10
INITIALS
AG
DATE
4/14/23
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE

<<<PAGE 3>>>

CONCUR:
ROUTING
PHC10
Q5. You ask whether a shipper is required to include a subsidiary hazard in the basic
description on the hazardous materials shipping paper as required in § 172.202(a)(3).
INITIALS
AG
DATE
4/14/23
A5. The answer is yes. A hazardous materials shipping paper entry for a package containing a
material with a subsidiary hazard must display the hazard class or division number in
parentheses after the primary hazard class or division in the basic description. This
includes circumstances in which the shipper has modified an existing HMT entry to
account for additional subsidiary hazards.
ROUTING
INITIALS
DATE
I hope this information is helpful. Please contact us if we can be of further assistance.
Sincerely,
ROUTING
INITIALS
DATE
Dirk Der Kinderen
Chief, Standards Development Branch
Standards and Rulemaking Division
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE
ROUTING
INITIALS
DATE

<<<PAGE 4>>>

U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
April 19, 2023
Steve Laughlin
Regulatory & Waste Specialist
519 Hillcrest Lane
Lindenhurst, IL 60046
Reference No. 23-0005
Dear Mr. Laughlin:
This letter is in response to your January 19, 2023, email and subsequent discussion with a
member of my staff requesting clarification of the Hazardous Materials Regulations (HMR; 49
CFR Parts 171-180) applicable to the classification of hazardous materials and assignment of
subsidiary hazards to existing entries on the § 172.101 Hazardous Materials Table (HMT).
We have paraphrased and answered your questions as follows:
Q1. You ask whether it is permissible for a shipper to classify a material differently than
indicated on the manufacturer’s safety data sheet (SDS) if the shipper knows that the SDS
classification is incorrect.
A1. The answer is yes. In accordance with § 173.22, it is the shipper’s responsibility to
classify a hazardous material. As provided in § 171.2(b), each offeror—i.e., the shipper—
may rely on information provided by another offeror, unless that offeror knows or, a
reasonable person, acting in the circumstances and exercising reasonable care, would
have knowledge that the information provided by another offeror is incorrect. If an
offeror has knowledge that the information provided by another entity regarding the
classification of a hazardous material is incorrect, they must accurately classify the
material prior to offering it for transportation.
Q2. You ask whether a shipper is required to label a package with a subsidiary hazard label if
the shipper knows that the material meets that subsidiary hazard classification, even if
that hazard is not included in the § 172.101 HMT entry for the material.
A2. The answer is yes. It is the shipper's responsibility to determine if a material has
subsidiary hazards that require subsidiary hazard labels. As provided in § 172.101(g),
provisions in § 172.402 may require that a label other than that specified in Column 6 of
the HMT be affixed to the package in addition to that specified in Column 6.

<<<PAGE 5>>>

Please note there are circumstances where it is impermissible to modify an entry with
additional hazards, including materials classified by an approval from the Associate
Administrator and entries with a “+” sign in Column 1 of the HMT, unless authorized by
the Associate Administrator (see § 172.101(b)(1)).
Q3. You ask whether the shipper's responsibility to determine if a material has additional
subsidiary hazards applies to all hazardous materials. In particular, you ask whether a
Division 5.2 organic peroxide that does not have “Note 13” entered in association with
the technical name in the § 173.225 Table 1 to paragraph (c) – the Organic Peroxide
Table – may be labeled with a Class 8 subsidiary hazard label if the shipper knows that
the material meets the definition of a Class 8 corrosive material.
A3. The answer is yes, unless the material has been classified and approved for transportation
by the Associate Administrator in accordance with the procedures of § 173.128. If a
shipper has knowledge that an organic peroxide listed by technical name in the § 173.225
Organic Peroxide Table meets the definition of a Class 8 corrosive material, they must
affix a Class 8 label and describe the material accordingly, even if the Organic Peroxide
Table entry does not include “Note 13.”
If a shipper has knowledge that an organic peroxide material approved by the Associate
Administrator meets the definition of a Class 8 corrosive material—but the classification
approval document does not list this hazard—the person should submit the information to
the Associate Administrator for review and evaluation.
Q4. You ask whether a shipper is required to provide supporting evidence of additional
subsidiary hazards not included in the § 172.101 HMT entry to accompany the shipment.
And after transportation is completed, you further ask whether a shipper is required to
provide the supporting evidence to an authorized official of a Federal, State, or local
government agency upon request.
A4. The HMR do not require that records of classification determination be made available
during transportation. However, providing supporting evidence—during shipment—of a
classification determination in this circumstance may reduce confusion and the likelihood
of a frustrated shipment. Maintaining easily accessible copies of such records is
encouraged to promote clarity. Please note that an agency action, such as the Associate
Administrator’s classification approval of an explosive, self-reactive, or organic peroxide
material may require that data associated with the classification of the material be
retained by the manufacturer, test laboratory, or other party.
Lastly, as part of an enforcement action, a shipper may be required to provide the records
of classification determination to an authorized official of a Federal, State, or local
government agency upon request. Please see 49 CFR Part 109 for procedural
requirements that PHMSA investigators will follow in an investigation.

<<<PAGE 6>>>

Q5. You ask whether a shipper is required to include a subsidiary hazard in the basic
description on the hazardous materials shipping paper as required in § 172.202(a)(3).
A5. The answer is yes. A hazardous materials shipping paper entry for a package containing a
material with a subsidiary hazard must display the hazard class or division number in
parentheses after the primary hazard class or division in the basic description. This
includes circumstances in which the shipper has modified an existing HMT entry to
account for additional subsidiary hazards.
I hope this information is helpful. Please contact us if we can be of further assistance.
Sincerely,
Dirk Der Kinderen
Chief, Standards Development Branch
Standards and Rulemaking Division

<<<PAGE 7>>>

Patrick
23-0005
From: INFOCNTR (PHMSA)
To: Dodd, Alice (PHMSA)
Cc: Hazmat Interps
Subject: FW: Request for interpretation - Altering HMT entries
Date: Tuesday, January 24, 2023 1:46:47 PM
Attachments: LOI Altering DOT Descriptions .docx
Hi Alice,
Please see the attached interpretation request.
Additionally, the requestor’s physical address is:
519 Hillcrest Lane
Lindenhurst, IL 60046
Please let me know if you need anything else.
Regards,
-Breanna
From: Steve Laughlin <steve@curaes.com>
Sent: Thursday, January 19, 2023 10:07 AM
To: INFOCNTR (PHMSA) <INFOCNTR.INFOCNTR@dot.gov>
Subject: Request for interpretation - Altering HMT entries
CAUTION: This email originated from outside of the Department of Transportation (DOT). Do
not click on links or open attachments unless you recognize the sender and know the content
is safe.
Dear PHMSA,
Would appreciate an interpretation on the following
Steve Laughlin
Regulatory & Waste Specialist
224-381-3943
steve@curaes.com

<<<PAGE 8>>>

January 7, 2023
U. S. Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Dear Sir/Madame,
Is it permissible to change or add information to entries found in the Hazardous Materials Table?
Specifically, we encountered a situation where a shipper added a secondary hazard of corrosivity
to the entry in the table for UN3109, Organic peroxide, type F liquid, 5.2
Additionally, we have come across several products that included packing groups to 5.2
designated materials where none exist in the hazardous materials table.
Please advise.
Steve Laughlin
- **truncated:** false
- **body characters:** 14123
