WTO notification · TBT
United StatesUpdated: check whether it is now adopted or in force
Official title
Dicyclohexyl phthalate (DCHP); Draft Risk Evaluation Under the Toxic Substances Control Act (TSCA); Notice of Availability and Request for Comment
The United States issued an addendum on 8 January 2026 to the earlier TBT notification G/TBT/N/USA/2176. Addenda often report that a measure was adopted, changed, postponed or withdrawn. The measure was first notified on 9 January 2025. The comment period closed on 9 May 2025.
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Dicyclohexyl phthalate (DCHP) (1,2-benzenedicarboxylic acid, 1,2- dicyclohexyl ester) (CASRN 84-61-7); Environmental protection; Production in the chemical industry; Products of the chemical industry
The comment period closed on 9 May 2025. You can still raise concerns about the measure with your country's WTO TBT enquiry point, quoting the document symbol G/TBT/N/USA/2176/Add.2; it can take them up with the United States.
Find your country's enquiry point on WTO ePing (opens in a new tab)Latest notice (G/TBT/N/USA/2176/Add.2, 8 January 2026)
Butyl Benzyl Phthalate (BBP), Dibutyl Phthalate (DBP), Dicyclohexyl Phthalate (DCHP), Diethylhexyl Phthalate (DEHP), and Diisobutyl Phthalate (DIBP); Risk Evaluation under the Toxic Substances Control Act (TSCA); Notice of Availability
The Environmental Protection Agency (EPA or Agency) is announcing the availability of the final risk evaluations under the Toxic Substances Control Act (TSCA) for Butyl Benzyl Phthalate (BBP) (CARSN 85-68-7), Dibutyl Phthalate (DBP) (CASRN 84-74-2), Dicyclohexyl Phthalate (DCHP) (CASRN 84-61-7), Diethylhexyl Phthalate (DEHP) (CASRN 117-81-7), and Diisobutyl Phthalate (DIBP) (CASRN 84-69-5). The purpose of conducting risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without consideration of costs or non-risk factors, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, under the conditions of use. EPA used the best available science to prepare these final risk evaluations, and determined, based on the weight of scientific evidence, that BBP, DBP, DCHP, DEHP, and DIBP pose unreasonable risk to human health and/or the environment driven by specific conditions of use. Under TSCA, EPA must initiate risk management actions to address the unreasonable risk. 91 Federal Register (FR) 373, 6 January 2026: This notice of availability and previous actions notified under the symbol G/TBT/N/USA/2176 are identified by Docket Number EPA-HQ-OPPT-2018-0504. The Docket Folder is available on Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also…
Notice of Availability and Request for Comment - The Environmental Protection Agency (EPA or Agency) is announcing the availability of and seeking public comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for Dicyclohexyl phthalate (DCHP) (1,2-benzenedicarboxylic acid, 1,2- dicyclohexyl ester) (CASRN 84-61-7). 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, without consideration of costs or other non-risk factors, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, under the conditions of use. EPA has used the best available science to prepare this draft risk evaluation and to preliminarily determine that DCHP poses unreasonable risk to human health.
Every notice about this measure published here, newest first. Each one is the notifying member's own text.
AddendumG/TBT/N/USA/2176/Add.2
Butyl Benzyl Phthalate (BBP), Dibutyl Phthalate (DBP), Dicyclohexyl Phthalate (DCHP), Diethylhexyl Phthalate (DEHP), and Diisobutyl Phthalate (DIBP); Risk Evaluation under the Toxic Substances Control Act (TSCA); Notice of Availability
The Environmental Protection Agency (EPA or Agency) is announcing the availability of the final risk evaluations under the Toxic Substances Control Act (TSCA) for Butyl Benzyl Phthalate (BBP) (CARSN 85-68-7), Dibutyl Phthalate (DBP) (CASRN 84-74-2), Dicyclohexyl Phthalate (DCHP) (CASRN 84-61-7), Diethylhexyl Phthalate (DEHP) (CASRN 117-81-7), and Diisobutyl Phthalate (DIBP) (CASRN 84-69-5). The purpose of conducting risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without consideration of costs or non-risk factors, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, under the conditions of use. EPA used the best available science to prepare these final risk evaluations, and determined, based on the weight of scientific evidence, that BBP, DBP, DCHP, DEHP, and DIBP pose unreasonable risk to human health and/or the environment driven by specific conditions of use. Under TSCA, EPA must initiate risk management actions to address the unreasonable risk. 91 Federal Register (FR) 373, 6 January 2026: This notice of availability and previous actions notified under the symbol G/TBT/N/USA/2176 are identified by Docket Number EPA-HQ-OPPT-2018-0504. The Docket Folder is available on Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also…
AddendumG/TBT/N/USA/2176/Add.1
Comment deadline: Closed on 9 May 2025
Dicyclohexyl Phthalate (DCHP); Draft Risk Evaluation Under the Toxic Substances Control Act (TSCA); Notice of Availability and Request for Comment; Reopening of Comment Period
In the Federal Register of 7 January 2025, Environmental Protection Agency (EPA) announced the availability of and solicited public comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for Dicyclohexyl phthalate (DCHP) (1,2-benzenedicarboxylic acid, 1,2-dicyclohexyl ester) (CASRN 84-61-7) (notified as G/TBT/N/USA/2176). This document reopens the comment period, which is scheduled to end on 10 March 2025, for 60 days. The comment period for the document published on 7 January 2025, at 90 FR 1125 (FRL-12481-01-OCSPP) is reopened. Comments must be received on or before 9 May 2025. 90 Federal Register (FR) 11966, 13 March 2025: This reopening of comment period and the notice notified as G/TBT/N/USA/2176 is identified by Docket Number EPA-HQ-OPPT-2018-0504. The Docket Folder is available on Regulations.gov at and provides access to primary and supporting documents as well as comments received. Documents are also accessible from Regulations.gov by searching the Docket Number. WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point. Comments received by the USA TBT Enquiry Point from WTO Members and their stakeholders by 4pm Eastern Time on 9 May 2025 will be shared with the EPA and will also be submitted to the Docket on Regulations.gov if received within the comment period.
Regular notificationG/TBT/N/USA/2176
Comment deadline: Closed on 10 March 2025
Dicyclohexyl phthalate (DCHP); Draft Risk Evaluation Under the Toxic Substances Control Act (TSCA); Notice of Availability and Request for Comment
Notice of Availability and Request for Comment - The Environmental Protection Agency (EPA or Agency) is announcing the availability of and seeking public comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for Dicyclohexyl phthalate (DCHP) (1,2-benzenedicarboxylic acid, 1,2- dicyclohexyl ester) (CASRN 84-61-7). 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, without consideration of costs or other non-risk factors, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, under the conditions of use. EPA has used the best available science to prepare this draft risk evaluation and to preliminarily determine that DCHP poses unreasonable risk to human health.
Expodite writes its summary from the official record. The notification and the documents it notifies are on the WTO's own websites.
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