WTO notification · TBT
United StatesProposed measure, may since have been adopted
Official title
1,3-Butadiene; Risk Evaluation Under the Toxic Substances Control Act (TSCA); Notice of Availability
The United States notified this proposed TBT measure to the WTO on 8 January 2026.
Expodite puts notifications like this one in your Updates centre, matched to the HS codes of your products and the markets you export to. Opens the requirements check for the United States in your Expodite account.
Source: WTO ePing (opens in a new tab). Summaries by Expodite, which is independent of the WTO.
Published here:
1,3-Butadiene; Environmental protection; Production in the chemical industry; Products of the chemical industry
The notification sets no comment deadline. To comment, contact your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/USA/2255; it forwards comments to the United States.
Find your country's enquiry point on WTO ePing (opens in a new tab)The Environmental Protection Agency (EPA or Agency) is announcing the availability of the final risk evaluation under the Toxic Substances Control Act (TSCA) for 1,3-butadiene (CASRN 106-99-0). The purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment under the conditions of use, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, and without consideration of costs or non-risk factors. EPA used the best available science to prepare this final risk evaluation and determined, based on the weight of scientific evidence, that 1,3-butadiene poses unreasonable risk to human health driven by specific conditions of use. EPA will now initiate risk management actions to address the unreasonable risk.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
WTO notificationTBTAdopted, according to its latest noticeNew
Proposed rule - The Environmental Protection Agency (EPA) is proposing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and are also subject to an Order issued by EPA pursuant to…
Symbol: G/TBT/N/USA/2289/Add.2Comment period closed
WTO notificationTBTAdopted, according to its latest noticeNew
Proposed rule - In this document, the Space Bureau (Bureau or we) within the Federal Communications Commission (Commission) seeks comment on potential revisions to the set of geostationary (GSO) satellite network reference links adopted in the Modernizing Spectrum Sharing for Satellite Broadband…
Symbol: G/TBT/N/USA/2217/Rev.1/Add.1Comment period closed
WTO notificationTBTProposed measure, open for commentsNew
Notice of proposed rulemaking - The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes updating its regulations for liquefied natural gas (LNG) facilities to incorporate by reference the most recent industry safety standards and to make other changes to account for more than…
Symbol: G/TBT/N/USA/2329Comments until 4 January 2027
WTO notificationTBTProposed measure, open for commentsNew
Proposed rule - The Environmental Protection Agency (EPA) is proposing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and are also subject to an Order issued by EPA pursuant to…
Symbol: G/TBT/N/USA/2328Comments until 2 December 2026
Expodite matches each notification to the markets you export to and the HS codes of your products, and puts the ones that concern you in your Updates centre, with the date comments close.