TSCA Activity Tracker (2024–25)
2024-25 TSCA Activity Tracker
Use the orange tabs below to explore updates about chemical prohibitions/bans, restrictions, and risk evaluations mandated by the Toxic Substances Control Act (TSCA), as amended.
Welcome
The Toxic Substance Control Act (TSCA), as amended in 2016, directs US EPA to evaluate the risks of chemicals on the TSCA Inventory and address any “unreasonable risks” with regulations that restrict the substance’s manufacturing, distribution, and/or use. Lion tracks the risk evaluation and rulemaking process here—from prioritization of a chemical through publication of a Final Rule.
This page also highlights key dates for industry stakeholders who wish to participate in the chemical risk evaluation and rulemaking process by submitting comments, attending public meetings, etc.
Learn more about chemical risk evaluations mandated by TSCA:
- TSCA Section 6 Prohibitions/Rules
- TSCA Chemical Risk Evaluations
- Major TSCA Policy Update on Risk Evaluations
- Updated TSCA Inventory Available (May 2024)
Online TSCA Training
Be confident you can meet your EPA chemical reporting, recordkeeping, and management requirements under the newest TSCA rules.
The TSCA Regulations Online Course guides EHS managers through these complex rules—including how to use the TSCA Chemical Inventory; inventory, IUR, or “Form U” reporting responsibilities; Pre Manufacture Notifications (PMN); Significant New Use Rules (SNUR); and management standards for PCBs.
Final Rules
When a risk evaluation shows a that chemical poses an “unreasonable risk” to human health or the environment, EPA must act to address the risk(s) with regulations for manufacturing, distribution, and/or use of the substance.
| Chemical name | Effective Date | See 40 CFR 751... | Link to Final Rule |
|---|---|---|---|
| Methylene Chloride (MCL) | 07/08/2024 | Subpart B (751.101—.117) | Final Rule (05/08/2024) |
| Asbestos (Chrysotile) | 05/28/2024 | Subpart F (751.501—.515) | Final Rule (03/28/2024) |
Final Rules for PBT Chemicals
Section 6(h) of TSCA directs US EPA to evaluate and, if necessary, address the risks posed by specific persistent, bioaccumulative, and toxic chemical substances or "PBTs".
| Chemical name | Latest Update | See 40 CFR 751... |
|---|---|---|
| Phenol, Isopropylated Phosphate 3:1 (PIP 3:1) | Compliance Date Extended (03/08/2022) | Subpart E (751.407) |
| Pentachlorothiophenol (PCTP) | Final Rule (01/06/2021) | Subpart E (751.411) |
| Hexachlorobutadiene (HCBD) | Final Rule (01/06/2021) | Subpart E (751.413) |
| Decabromodiphenyl ether (DecaBDE) | Final Rule (01/06/2021) | Subpart E (751.405) |
| 2,4,6-tris(tert-butyl)phenol (2,4,6- TTBP) | Final Rule (01/06/2021) | Subpart E (751.409) |
Proposed Rules
EPA follows strict procedure to impose new TSCA restrictions. The process involves talking with stakeholders, proposing a rule, taking comments, and having the rule approved by the Office of Management and Budget (OMB).
| Chemical name | Comments End | Rule Details | Link to Proposed Rule |
|---|---|---|---|
| 1-bromopropane (1-BP) | Details | Proposed Rule | |
| n-Methylpyrrolidone (NMP) | Details | Proposed Rule | |
| Trichloroethylene (TCE) | Details | Proposed Rule | |
| Carbon Tetrachloride ("Carbon Tet") | Details | Proposed Rule | |
| Perchloroethylene (PCE) | Details | Proposed Rule |
Proposed Rules for PBT Chemicals
Section 6(h) of TSCA directs US EPA to evaluate and, if necessary, address the risks posed by specific persistent, bioaccumulative, and toxic chemical substances or "PBTs".
| Chemical name | Comments End | Link to Proposed Rule |
|---|---|---|
| Phenol, Isopropylated Phosphate 3:1 (PIP 3:1) | Revisions to 01/2021 Final Rule (11/24/2023) | |
| Decabromodiphenyl ether (DecaBDE) | Revisions to 01/2021 Final Rule (11/24/2023) | |
Final Risk Evaluations
After reviewing and addressing public comments, EPA announces the result of each risk evaluation along with a final determination concerning “unreasonable risk.” Completed evaluations will be listed below until EPA takes further action.
| Chemical name | Announced | Unreasonable Risk? | Link to Notice |
|---|---|---|---|
| Tris(2-chloroethyl) phosphate (TCEP) | 09/26/2024 | Yes (Health, Environment) | Final Risk Evaluation |
| Color Index Pigment Violent 29 (PV29) | 09/06/2022 | Yes (Health) | Final Risk Evaluation (Rev.) |
| Cyclic Aliphatic Bromide Cluster (HBCD) | 06/29/2022 | Yes (Health, Environment) | Final Risk Evaluation (Rev.) |
Draft Risk Evaluations
Before acting on the results of a risk evaluation, EPA must share the evaluation in draft form. At this stage, stakeholders and the public can review and comment on EPA’s findings before a final determination is made.
| Chemical name | Comments End | Unreasonable Risk? | Link to Notice |
|---|---|---|---|
| Di-iosnonyl Phthalate (DINP)* | 11/04/2024 | Yes (Health) | Draft Risk Evaluation |
| 1,1-dichloroethane (1,1-DCA) | 09/02/2024 | Yes (Health) | Draft Risk Evaluation |
| Di-iosdecyl Phthalate (DIDP)* | 07/19/2024 | Yes (Health) | Draft Risk Evaluation |
| Asbestos (Legacy Uses) | 06/17/2024 | Yes (Health) | Draft Risk Evaluation |
| Formaldehyde | 05/14/2024 | Yes (Health) | Draft Risk Evaluation |
| 1,4-dioxane | 09/08/2023 | Yes (Health) | Draft Risk Evaluation |
| 1,2-dichloroethane (ethylene dichloride) | 09/02/2024 | TBD | Draft Hazard Assessment |
* Manufacturer requested risk evaluation
High Priority Chemicals
To identify chemicals as “high priority” for risk evaluation, EPA draws mostly from a TSCA Work Plan completed in 2014. EPA also considers public comments, available scientific data, and statutory requirement/limits.
| Chemical name | Comment Period Ends | High Priority Designation | Link to Notice |
|---|---|---|---|
| Acetaldehyde | 10/23/2024 | 07/25/2024 (Proposed) | Notice |
| Acrylonitrile | 10/23/2024 | 07/25/2024 (Proposed) | Notice |
| Benzenamine | 10/23/2024 | 07/25/2024 (Proposed) | Notice |
| MBOCA 3 | 10/23/2024 | 07/25/2024 (Proposed) | Notice |
| Vinyl Chloride | 10/23/2024 | 07/25/2024 (Proposed) | Notice |
| Octamethylcyclotetrasiloxane (D4) * | - | 10/00/2020 (Request Granted) | Final Scope |
| 1,3-butadiene | - | 12/20/2019 | Final Scope |
| Butyl benzyl phthalate (BBP) | - | 12/20/2019 | Final Scope |
| Dibutyl phthalate (DBP) | - | 12/20/2019 | Final Scope |
| o-Dichlorobenzene | - | 12/20/2019 | Final Scope |
| p-Dichlorobenzene | - | 12/20/2019 | Final Scope |
| trans-1,2-Dichloroethylene | - | 12/20/2019 | Final Scope |
| 1,2-Dichloropropane | - | 12/20/2019 | Final Scope |
| Dicyclohexyl phthalate | - | 12/20/2019 | Final Scope |
| Di-ethylhexyl phthalate (DEHP) | - | 12/20/2019 | Final Scope |
| Di-isobutyl phthalate (DIBP) | - | 12/20/2019 | Final Scope |
| Ethylene dibromide | - | 12/20/2019 | Final Scope |
| HHCB 2 | - | 12/20/2019 | Final Scope |
| TBBPA 1 | - | 12/20/2019 | Final Scope |
| Phosphoric acid, triphenyl ester (TPP) | - | 12/20/2019 | Final Scope |
| Phthalic anhydride | - | 12/20/2019 | Final Scope |
| 1,1,2-Trichloroethane | - | 12/20/2019 | Final Scope |
* Manufacturer-requested Risk Evaluation
1 4,4'-(1-Methylethylidene)bis[2, 6-dibromophenol] [TBBPA]
2 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta [g]-2-benzopyran [HHCB]
3 '4-4'-methylene bis(2-chloroaniline) [MBOCA]
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