[Federal Register Volume 88, Number 16 (Wednesday, January 25, 2023)]
[Rules and Regulations]
[Pages 4756-4761]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-01327]


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DEPARTMENT OF TRANSPORTATION

Pipeline and Hazardous Materials Safety Administration

49 CFR Parts 107, 110, 171, 172, 173, 174, 175, 176, 177, 178, and 
180

[Docket No. PHMSA-2021-0091 (HM-260B)]
RIN 2137-AF56


Hazardous Materials: Editorial Corrections and Clarifications; 
Correction

AGENCY: Pipeline and Hazardous Materials Safety Administration (PHMSA), 
Department of Transportation (DOT).

ACTION: Final rule; correction.

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SUMMARY: The Pipeline and Hazardous Materials Safety Administration is 
correcting the final rule that appeared in the Federal Register on 
December 27, 2022. The final rule made editorial revisions and 
clarifications to the hazardous materials regulations including the 
hazardous materials table. The corrections address several errors to 
the hazardous material entries in the hazardous materials table.

DATES: This correction is effective January 26, 2023.

FOR FURTHER INFORMATION CONTACT: Yul B. Baker Jr., Standards and 
Rulemaking Division, at 202-366-8553, Pipeline and Hazardous Materials 
Safety Administration, U.S. Department of Transportation, 1200 New 
Jersey Avenue SE, East Building, 2nd Floor, Washington, DC 20590-0001.

SUPPLEMENTARY INFORMATION:

I. Background and Need for Correction

    The Pipeline and Hazardous Materials Safety Administration (PHMSA) 
published final rule HM-260B \1\ to correct editorial errors and 
improve the clarity of certain provisions in PHMSA's program and 
procedural regulations and in the Hazardous Materials Regulations (HMR; 
49 Code of Federal Regulations parts 171-180). The intended effect of 
the rulemaking was to enhance accuracy and reduce misunderstandings of 
the HMR. The changes in the final rule included numerous amendments to 
the Sec.  172.101 Hazardous Materials Table (HMT). Unfortunately, the 
amendments to the table entries for various hazardous materials 
introduced new unintended errors that PHMSA is correcting in this 
notice. The unintended errors are summarized below.
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    \1\ 87 FR 79752 (Dec. 27, 2022).
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    UN2258, 1,2-Propylenediamine: In HM-260B, PHMSA removed special 
provision A6 from column (7) of the Sec.  172.101 HMT for several 
hazardous materials including ``UN2258, 1,2-Propylenediamine.'' Special 
provision A6 was removed because it had been inadvertently added back 
to the Sec.  172.101 HMT when making unrelated changes to entries in 
final rule HM-219C.\2\ UN2258, 1,2-Propylenediamine is a Class 8 
corrosive liquid material that also has a secondary Class 3 flammable 
hazard. Thus, in column (6) of the table, the codes ``8'' and ``3'' are 
specified for the hazard labels required for a package containing this 
material. However, in HM-260B, we inadvertently omitted reference to 
the ``3'' from column (6). The absence of the ``3'' will create 
uncertainty for shippers and carriers of ``UN2258, 1,2-
Propylenediamine'' as to whether a Class 3 label is required on a 
package containing this material. To meet the original intent of HM-
260B to enhance accuracy and reduce misunderstandings of the HMR, PHMSA 
is correcting this error in this notice. See Section III. Corrections.
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    \2\ 85 FR 75680 (Nov. 25, 2020).
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    Vessel stowage codes: In HM-260B, PHMSA also made several revisions 
to correct inadvertent omissions of vessel stowage codes from column 
(10B) to the Sec.  172.101 HMT for the entries ``UN1783, 
Hexamethylenediamine solution, 8, III,'' ``UN1788, Hydrobromic acid, 
with not more than 49 percent hydrobromic acid,'' and ``UN1740, 
Hydrogendifluoride, solid, n.o.s., 8, III.'' Column (10B) assigns 
specific codes for the stowage and handling requirements for specific 
hazardous materials transported by vessel. In HM-219C, PHMSA had 
inadvertently omitted stowage code ``52'' for the Packing Group (PG) 
III entry for ``Hexamethylenediamine solution'' and stowage codes 
``53'' and ``58'' for the PG III entry for ``Hydrogendifluoride, solid, 
n.o.s,'' when making unrelated changes to these entries to specify 
reference citations for authorized packaging exceptions.
    Stowage code ``52'' means stow ``separated from'' acids. Stowage 
codes ``53'' and ``58'' mean stow ``separated from'' alkaline compounds 
and stow ``separated from'' cyanides, respectively. These stowage codes 
are important to ensure proper segregation between acids and both 
amines and cyanides. Amines react dangerously with acids and evolving 
heat, and the heat of reaction has the potential to generate corrosive 
vapors. Cyanides react with acids to generate toxic vapors. PHMSA 
attempted to add the respective stowage codes back to column (10B) 
under HM-260B but instead added the stowage codes to column (7), which 
assigns special provisions applicable to certain Sec.  172.101 HMT 
entries. More specifically, stowage code ``52'' was added to both 
column (7) and column (10B) for ``Hexamethylenediamine solution, II'' 
and stowage codes ``53'' and ``58'' were added to column (7) and not 
column (10B) for ``Hydrogendifluoride, solid, n.o.s., III.''
    Readers may misinterpret unrelated special provisions as being 
applicable and that the stowage codes that were inadvertently omitted 
would not apply. For example, special provision ``53'' requires 
packages to display a subsidiary risk label ``EXPLOSIVE'' along with 
the subsidiary hazard indicated in the shipping description. If ``53'' 
were to remain in column (7) for the PG III entry of 
``Hexamethylenediamine solution''--which is a corrosive material that 
does not have an explosive hazard--persons would be mischaracterizing 
the hazard for the material.
    Additionally, in final rule HM-215O,\3\ PHMSA inadvertently omitted 
stowage codes ``53'' and ``58'' for the entry ``UN1788, Hydrobromic 
acid, with not more than 49 percent hydrobromic acid.'' PHMSA had made 
numerous changes to the stowage codes assigned to hazardous materials 
in the Sec.  172.101 HMT for consistency with the International 
Maritime Dangerous Goods (IMDG) Code for regulation of hazardous 
material transported by vessel including for the companion entry 
``UN1788, Hydrobromic acid, with more than 49 percent hydrobromic 
acid.'' The IMDG Code Dangerous Goods List has just one table entry for 
``UN1788, Hydrobromic acid,'' but

[[Page 4757]]

PHMSA splits it into two hazardous materials descriptions because of 
varying safety measures dependent on the mode of transport. For 
instance, ``UN1788, Hydrobromic acid, with more than 49 percent 
hydrobromic acid,'' is forbidden for transport by air. PHMSA attempted 
to add the respective stowage codes to column (10B) of the Sec.  
172.101 HMT to the ``not more than'' entry of UN1788 but inadvertently 
omitted the ``not'' from the hazardous materials description 
effectively making the changes apply to the ``more than'' entry of 
UN1788. PHMSA also inadvertently omitted stowage code ``8'' in the 
process. If these errors remain uncorrected, readers may misinterpret 
the provisions that apply to the ``more than'' entry as now applying to 
the ``not more than'' entry and that the missing stowage codes would 
not apply when transporting this material. To meet the intent of HM-
260B to enhance accuracy and reduce misunderstandings of the HMR, PHMSA 
is correcting these errors in this notice. See Section III. 
Corrections.
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    \3\ 85 FR 27810 (May 11, 2020).
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II. Regulatory Analyses and Notices

A. Statutory/Legal Authority

    Statutory authority for this correction notice is provided by the 
Federal Hazardous Materials Transportation Law (49 U.S.C. 5101 et 
seq.). The Secretary delegated the authority granted in this law to the 
PHMSA Administrator at 49 CFR 1.97(b).
    PHMSA finds it has good cause to make the corrections without 
notice and comment pursuant to Section 553(b) of the Administrative 
Procedure Act (APA, 5 U.S.C. 551, et seq.). Section 553(b)(B) of the 
APA provides that, when an agency for good cause finds that notice and 
public procedure are impracticable, unnecessary, or contrary to the 
public interest, the agency may issue a rule without providing notice 
and an opportunity for public comment. As explained above, the changes 
to the text of the final rule document provided in this notice consist 
of corrections to preamble discussion of Sec.  172.101 HMT and 
corrections to the regulatory text in the amendatory instruction for 
changes to Sec.  172.101 HMT. The publication of this correction notice 
is needed to ensure the accuracy and reduce misunderstanding of 
unintended changes or omissions to Sec.  172.101 HMT.
    The January 26, 2023, effective date of the revisions contained in 
this notice is authorized under both Section 553(d)(1) and (3) of the 
APA. Section 553(d)(1) provides that a rule should take effect ``not 
less than 30 days'' after publication in the Federal Register except 
for ``a substantive rule which grants or recognizes an exemption or 
relieves a restriction,'' while Section 553(d)(3) allows for earlier 
effectiveness for good cause found by the agency and published within 
the rule. 5 U.S.C. 553(d)(1), (3). ``The purpose of the thirty-day 
waiting period is to give affected parties a reasonable time to adjust 
their behavior before the final rule takes effect.'' Omnipoint Corp. v. 
F.C.C., 78 F.3d 620, 630 (D.C. Cir. 1996). Since this final rule has 
not yet taken effect, the impact on affected parties is minimal and 
such parties will not be adversely impacted by the shortened period 
before the correction becomes effective. The corrections in this notice 
accurately represent the intended changes to the Sec.  172.101 HMT in 
the final rule and, in accordance with 5 U.S.C. 553(d)(1), are 
effective January 26, 2023. Moreover, PHMSA finds that good cause under 
Section 553(d)(3) supports making the revisions effective January 26, 
2023, because the corrections contained in this notice are entirely 
consistent with the final rule--which itself was published on December 
27, 2022--and helps promote accuracy and understanding of the Sec.  
172.101 HMT requirements prior to the January 26, 2023, effective date.

B. Executive Order 12866 and DOT Regulatory Policies and Procedures

    This notice has been evaluated in accordance with existing policies 
and procedures and is considered not significant under Executive Order 
12866 (``Regulatory Planning and Review'') and DOT Order 2100.6A 
(``Rulemaking and Guidance Procedures''); therefore, this notice has 
not been reviewed by the Office of Management and Budget (OMB) under 
Executive Order 12866. PHMSA finds that the corrections in the notice 
(in all respects consistent with the final rule) neither impose 
incremental compliance costs nor adversely affect safety.

C. Regulatory Flexibility Act and Executive Order 13272

    The Regulatory Flexibility Act (5 U.S.C. 601, et seq.) requires 
agencies to review regulations to assess their impact on small entities 
unless the agency head certifies that a rulemaking will not have a 
significant economic impact on a substantial number of small entities 
including small businesses, not-for-profit organizations that are 
independently owned and operated and are not dominant in their fields, 
and governmental jurisdictions with populations under 50,000. The 
Regulatory Flexibility Act directs agencies to establish exceptions and 
differing compliance standards for small businesses when possible to do 
so and still meet the objectives of applicable regulatory statutes. 
Executive Order 13272 (``Proper Consideration of Small Entities in 
Agency Rulemaking'') \4\ requires agencies to establish procedures and 
policies to promote compliance with the Regulatory Flexibility Act and 
to ``thoroughly review draft rules to assess and take appropriate 
account of the potential impact'' of the rules on small businesses, 
governmental jurisdictions, and small organizations. DOT posts its 
implementing guidance on a dedicated web page.\5\
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    \4\ 67 FR 53461 (Aug. 16, 2002).
    \5\ DOT, ``Rulemaking Requirements Related to Small Entities,'' 
https://www.transportation.gov/regulations/rulemaking-requirements-concerning-small-entities (last accessed June 17, 2021).
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    The final rule was developed in accordance with Executive Order 
13272 and with DOT's procedures and policies to promote compliance with 
the Regulatory Flexibility Act and ensure that potential impacts of 
draft rules on small entities are properly considered. There are no 
costs to small entities associated with the final rule. The final rule 
made non-substantive changes that do not impose new requirements, so 
there are no direct or indirect adverse economic impacts for small 
units of government, businesses, or other organizations. This notice 
similarly does not impose new requirements but makes corrections to 
errors in the final rule document in the amendments to the Sec.  
172.101 HMT that if left uncorrected would be inaccurate and cause 
misunderstanding by stakeholders as to what requirements apply. 
Consequently, PHMSA certifies that neither the final rule nor this 
notice has a significant economic impact on a substantial number of 
small entities.

D. Paperwork Reduction Act

    Under the Paperwork Reduction Act of 1995 (44 U.S.C. 3501, et 
seq.), no person is required to respond to any information collection 
unless it has been approved by OMB and displays a valid OMB control 
number. Section 1320.8(d) of 5 CFR requires that PHMSA provide 
interested members of the public and affected agencies an opportunity 
to comment on information and recordkeeping requests. The corrections 
in this notice impose no new or revised information collection.

E. Unfunded Mandates Reform Act of 1995

    The Unfunded Mandates Reform Act of 1995 (UMRA; 2 U.S.C. 1501, et 
seq.) requires agencies to assess the effects of

[[Page 4758]]

federal regulatory actions on state, local, and tribal governments, and 
the private sector. For any final rule that includes a federal mandate 
that may result in the expenditure by state, local, and tribal 
governments, or by the private sector of $100 million or more in 1996 
dollars in any given year, the agency must prepare, amongst other 
things, a written statement that qualitatively and quantitatively 
assesses the costs and benefits of the federal mandate. The final rule 
did not impose unfunded mandates under the UMRA and this notice to 
correct errors in the final rule document also does not impose unfunded 
mandates. It does not result in costs of $100 million or more in 1996 
dollars to either state, local, or tribal governments, or to the 
private sector in any one year and is the least burdensome alternative 
that achieves the objective of the rule.

F. National Environmental Policy Act

    The National Environmental Policy Act of 1969 (NEPA), as amended 
(42 U.S.C. 4321 et seq.), and implementing regulations by the Council 
on Environmental Quality (40 CFR part 1500) requires federal agencies 
to consider the consequences of federal actions and prepare a detailed 
statement on actions that significantly affect the quality of the human 
environment. DOT Order 5610.1C, ``Procedures for Considering 
Environmental Impacts,'' establishes departmental procedures for 
evaluating environmental impacts under NEPA and its implementing 
regulations. The purpose of the final rule was to introduce non-
substantive changes that do not impose new requirements in order to 
improve accuracy and understanding of the HMR. The corrections to the 
final rule in this notice similarly do not impose new requirements. 
Therefore, PHMSA has determined that implementing this final rule will 
not significantly impact the quality of the human environment.

G. Executive Order 13132

    The final rule was analyzed in accordance with the principles and 
criteria contained in Executive Order 13132 (``Federalism'') \6\ and 
its implementing Presidential Memorandum (``Preemption'').\7\ Executive 
Order 13132 requires agencies to assure meaningful and timely input by 
state and local officials in the development of regulatory policies 
that may have ``substantial direct effects on the States, on the 
relationship between the national government and the States, or on the 
distribution of power and responsibilities among the various levels of 
government.'' The corrections in this notice are consistent with, and 
facilitate compliance with, the final rule, and do not have any 
substantial direct effects on the states, the relationship between the 
national government and the states, or the distribution of power and 
responsibilities among the various levels of government beyond what was 
accounted for in the final rule. It does not contain any provision that 
imposes any substantial direct compliance costs on state and local 
governments, nor any new provision that preempts state law. Therefore, 
the consultation and funding requirements of Executive Order 13132 do 
not apply.
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    \6\ 64 FR 43255 (Aug. 10, 1999).
    \7\ 74 FR 24693 (May 22, 2009).
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H. Environmental Justice

    Executive Orders 12898 (``Federal Actions to Address Environmental 
Justice in Minority Populations and Low-Income Populations''),\8\ 13985 
(``Advancing Racial Equity and Support for Underserved Communities 
Through the Federal Government''),\9\ 13990 (``Protecting Public Health 
and the Environment and Restoring Science To Tackle the Climate 
Crisis''),\10\ 14008 (``Tackling the Climate Crisis at Home and 
Abroad'') \11\ and DOT Order 5610.2C (``Department of Transportation 
Actions to Address Environmental Justice in Minority Populations and 
Low-Income Populations'') require DOT agencies to achieve environmental 
justice as part of their mission by identifying and addressing, as 
appropriate, disproportionately high and adverse human health or 
environmental effects, including interrelated social and economic 
effects of their programs, policies, and activities on minority 
populations, low-income populations, and other underserved and 
disadvantaged communities.
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    \8\ 59 FR 7629 (Feb. 11, 1994).
    \9\ 86 FR 7009 (Jan. 20, 2021).
    \10\ 86 FR 7037 (Jan. 20, 2021).
    \11\ 86 FR 7619 (Feb. 1, 2021).
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    PHMSA evaluated the final rule under the above Executive Orders and 
DOT Order 5610.2C and did not expect the final rule to cause 
disproportionately high and adverse human health and environmental 
effects on minority, low-income, underserved, and other disadvantaged 
populations and communities. The final rule was facially neutral and 
national in scope; it was neither directed toward a particular 
population, region, or community, nor was it expected to adversely 
impact any particular population, region, or community. Since PHMSA did 
not expect the final rule to adversely affect the safe transportation 
of hazardous materials generally, PHMSA does not expect the corrections 
to the final rule in this notice to involve disproportionately high 
adverse risks for minority populations, low-income populations, or 
other underserved and other disadvantaged communities.

I. Executive Order 13175

    The final rule was analyzed in accordance with the principles and 
criteria contained in Executive Order 13175 (``Consultation and 
Coordination with Indian Tribal Governments'') \12\ and DOT Order 
5301.1 (``Department of Transportation Policies, Programs, and 
Procedures Affecting American Indians, Alaska Natives, and Tribes''). 
Because none of the corrections have Tribal implications or impose 
substantial direct compliance costs on Indian Tribal governments, the 
funding and consultation requirements of Executive Order 13175 do not 
apply.
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    \12\ 65 FR 67249 (Nov. 6, 2000).
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    Executive Order 13175 and DOT Order 5301.1 require DOT Operating 
Administrations to assure meaningful and timely input from Indian 
Tribal government representatives in the development of rules that 
significantly or uniquely affect tribal communities by imposing 
``substantial direct compliance costs'' or ``substantial direct 
effects'' on such communities or the relationship and distribution of 
power between the Federal Government and Native American Tribes. PHMSA 
assessed the impact of this final rule and determined that it did not 
significantly or uniquely affect tribal communities or Native American 
Tribal governments. The changes to the HMR as written in the final rule 
are facially neutral and have broad, national scope. PHMSA therefore, 
expected the final rule not to affect tribal communities significantly 
or uniquely, much less impose substantial compliance costs on Native 
American Tribal governments or mandate tribal action. Because PHMSA 
expects the final rule will not adversely affect the safe 
transportation of hazardous materials generally, PHMSA does not expect 
it will entail disproportionately high adverse risks for tribal 
communities. For these reasons, PHMSA concluded the funding and 
consultation requirements of Executive Order 13175 and DOT Order 5301.1 
do not apply. Similarly, PHMSA does not expect the corrections to the 
final rule in this notice to affect tribal communities significantly or 
uniquely, much less impose substantial

[[Page 4759]]

compliance costs on Native American Tribal governments or mandate 
tribal action.

J. Executive Order 13609 and International Trade Analysis

    Under Executive Order 13609 (``Promoting International Regulatory 
Cooperation''),\13\ agencies must consider whether the impacts 
associated with significant variations between domestic and 
international regulatory approaches are unnecessary or may impair the 
ability of American business to export and compete internationally. In 
meeting shared challenges involving health, safety, labor, security, 
environmental, and other issues, international regulatory cooperation 
can identify approaches that are at least as protective as those that 
are or would be adopted in the absence of such cooperation. 
International regulatory cooperation can also reduce, eliminate, or 
prevent unnecessary differences in regulatory requirements. The 
corrections to the final rule in this notice do not impact 
international trade.
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    \13\ 77 FR 26413 (May 4, 2012).
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K. National Technology Transfer and Advancement Act

    The National Technology Transfer and Advancement Act of 1995 (15 
U.S.C. 272 note) directs federal agencies to use voluntary consensus 
standards in their regulatory activities unless doing so would be 
inconsistent with applicable law or otherwise impractical. Voluntary 
consensus standards are technical standards (e.g., specification of 
materials, test methods, or performance requirements) that are 
developed or adopted by voluntary consensus standard bodies. The 
corrections to the final rule do not invoke any voluntary consensus 
standards, so the National Technology Transfer and Advancement Act of 
1995 is not applicable in this case.

Corrections

    PHMSA makes corrections to both the preamble and regulatory text of 
the final rule document. PHMSA is correcting the preamble discussion of 
changes to column (7) of the Sec.  172.101 HMT by removing discussion 
of changes to the entries ``UN1783, Hexamethylenediamine solution, 8, 
III,'' and ``UN1740, Hydrogendifluoride, solid, n.o.s., 8, III,'' which 
misconstrue the intended vessel storage codes changes as special 
provision changes and correctly adds to the discussion of column (10B) 
changes as discussion of vessel stowage code changes for these 
materials. Additionally, PHMSA is correctly revising the Sec.  172.101 
HMT entries for the hazardous materials discussed above in Section I.
    In FR Doc. 2022-26960, appearing on page 79752 in the Federal 
Register of Tuesday, December 27, 2022, the following corrections are 
made:

Corrections to Preamble

    1. On page 79755, in the 3rd column, beginning at the bullet 
paragraphs starting with ``For ``UN1740'''' and ``For ``UN1783'''', the 
following are correctly removed:
     For ``UN1740, Hydrogendifluoride, solid, n.o.s., 8, PG 
III,'' PHMSA is correcting an error where special provisions 53 and 58 
are missing from column 7.
     For ``UN1783, Hexamethylenediamine solution, 8, PG III, 
PHMSA is correcting an error where special provision 52 is missing from 
column 7.
    2. On page 79756, in the 2nd column at the end of the first 
paragraph and before the heading ``Section 172.102,'' the following is 
correctly added:
     In column (10B) for ``UN1740, Hydrogendifluoride, solid, 
n.o.s., 8, PG III,'' stowage codes ``53'' and ``58'' are missing. PHMSA 
inadvertently omitted these stowage codes when making changes to this 
entry in HM-219C to allow packaging exceptions. Stowage code ``53'' 
provision means stow ``separated from'' alkaline compounds and stowage 
code ``58'' provision means stow ``separated from'' cyanides. PHMSA is 
amending the HMT to add the stowage codes back to column (10B). This 
amendment will ensure that this material is properly stowed for safe 
vessel transport.
     In column (10B) for ``UN1783, Hexamethylenediamine 
solution, 8, PG III,'' stowage code ``52'' is missing. PHMSA 
inadvertently omitted this stowage code when making changes to this 
entry in HM-219C to allow packaging exceptions. Stowage code ``52'' 
provision means stow ``separated from'' acids. PHMSA is amending the 
HMT to add the stowage code back to column (10B). This amendment will 
ensure that this material is properly stowed for safe transport.

Correction to Regulations


Sec.  172.101  [Corrected]

0
3. In the amendments to Sec.  172.101, in the table, make the following 
corrections:
0
a. On page 79769, correctly revise the entry for ``Hexamethylenediamine 
solution'';
0
b. On page 79769, remove the entry for ``Hydrobromic acid, with more 
than 49 percent hydrobromic acid'' and correctly add in its place an 
entry for ``Hydrobromic acid, with not more than 49 percent hydrobromic 
acid'';
0
c. On page 79769, correctly revise the entry for ``Hydrogendifluoride, 
solid, n.o.s.''; and
0
d. On page 79770, correctly revise the entry for ``1,2 
Propelenyamine''.
    The corrections read as follows:

[[Page 4760]]



                                                                                                Sec.   172.101 Hazardous Materials Table
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                                                                                                                                        (8)                                          (9)                                   (10)
                                                                                                                       -----------------------------------------------------------------------------------------------------------------
                                  Hazardous materials   Hazard                                                              Packaging (Sec.   173.***)        Quantity limitations (see Sec.  Sec.   173.27 and       Vessel stowage
             Symbols                descriptions and   class or  Identification    PG      Label    Special provisions ------------------------------------                        175.75)                       -----------------------
                                    proper shipping    division      numbers               codes     (Sec.   172.102)                                      ------------------------------------------------------
                                         names                                                                             Exceptions         Non-bulk                            Passenger      Cargo aircraft    Location     Other
                                                                                                                                                                  Bulk          aircraft/rail         only
(1)                               (2)................       (3)             (4)    (5)  (6).......  (7)...............  (8A)............  (8B)............  (8C)............  (9A)............  (9B)............      (10A)        (10B)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
                                                                                                              * * * * * * *
                                  Hexamethylenediamin         8          UN1783     II  8.........  IB2, T7, TP2......  154.............  202.............  242.............  1 L.............  30 L............          A           52
                                   e solution.
                                                                                   III  8.........  IB3, T4, TP1......  154.............  203.............  241.............  5 L.............  60 L............          A           52
 
                                                                                                              * * * * * * *
                                  Hydrobromic acid,           8          UN1788     II  8.........  A3, B2, B15, IB2,   154.............  202.............  242.............  1 L.............  30 L............          C       53, 58
                                   with not more than                                                N41, T7, TP2.
                                   49 percent
                                   hydrobromic acid.
                                                                                   III  8.........  A3, IB3, T4, TP1..  154.............  203.............  241.............  5 L.............  60 L............          C    8, 53, 58
 
                                                                                                              * * * * * * *
                                  Hydrogendifluoride,         8          UN1740     II  8.........  IB8, IP2, IP4, N3,  154.............  212.............  240.............  15 kg...........  50 kg...........          A  25, 40, 52,
                                   solid, n.o.s..                                                    N34, T3, TP33.                                                                                                               53, 58
                                                                                   III  8.........  IB8, IP3, N3, N34,  154.............  213.............  240.............  25 kg...........  100 kg..........          A  25, 40, 52,
                                                                                                     T1, TP33.                                                                                                                    53, 58
 
                                                                                                              * * * * * * *
                                  1,2-                        8          UN2258     II  8, 3......  A3, IB2, N34, T7,   154.............  202.............  243.............  1 L.............  30 L............          A       40, 52
                                   Propylenediamine.                                                 TP2.
 
                                                                                                              * * * * * * *
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


[[Page 4761]]

* * * * *

    Issued in Washington, DC, on January 19, 2023, under the 
authority delegated in 49 CFR 1.97.
Tristan H. Brown,
Deputy Administrator, Pipeline and Hazardous Materials Safety 
Administration.
[FR Doc. 2023-01327 Filed 1-24-23; 8:45 am]
BILLING CODE 4910-60-P