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DHS/USCG RIN: 1625-AC73 Publication ID: Fall 2023 
Title: 2022 Liquid Chemical Categorization Updates 

The Coast Guard is finalizing another update to the Liquid Chemical Categorization tables, in order to align them with the 2020 International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk and the International Maritime Organization’s Marine Environment Protection Committee’s Circular 25, which entered into force on January 1, 2021.  The updated tables provide a list of liquid hazardous materials and liquefied and compressed gases approved for international and domestic maritime transportation, and indicate how each substance is categorized by its pollution potential, safe carriage requirements, chemical flammability, combustibility, and compatibility with other substances.  This rule promotes the Coast Guard’s mission of maritime safety and imposes no additional cost to chemical shippers and vessel owners. 

Agency: Department of Homeland Security(DHS)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 46 CFR 30.25-1    46 CFR 150   
Legal Authority: 46 U.S.C. 3703   
Legal Deadline:  None
Action Date FR Cite
NPRM  09/22/2022  87 FR 57984   
NPRM Comment Period End  12/21/2022 
Final Rule  12/00/2023 
Additional Information: Docket Number USCG-2022-0327
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Agency Contact:
Sandip Chattopadhyay PhD, MBA
Lead Engineer
Department of Homeland Security
U.S. Coast Guard
Hazardous Material Division (CG-ENG-5), 2703 Martin Luther King, Jr. Avenue SE,
Washington, DC 20593-7508
Phone:202 372-1424