Chemicals Undergoing Risk Evaluation under TSCA
The existing chemicals listed on this page are undergoing risk evaluation as part of EPA’s existing chemical process under the Toxic Substances Control Act (TSCA) to determine whether they present an unreasonable risk to public health or the environment under the conditions of use.
Learn more about:
- The risk evaluation process for existing chemicals under TSCA
- The prioritization process, and how chemicals are identified as a high priority for risk evaluation
- Manufacturer-requested risk evaluations
- Risk management for existing chemicals
| Chemical Name | CASRN | Chemical Group | Date Initiated | Docket Number(s) | Status* | Agency Contact |
|---|---|---|---|---|---|---|
| Asbestos | 1332-21-4 | N/A | December 2016 | EPA-HQ-OPPT-2016-0736; EPA-HQ-OPPT-2019-0501 |
Part 1: Final risk evaluation (December 2020), Proposed risk management rule (April 2022) Part 2: Draft scope (December 2021) |
Peter Gimlin |
| 1-Bromopropane | 106-94-5 | Solvents | December 2016 | EPA-HQ-OPPT-2019-0235; EPA-HQ-OPPT-2016-0741 | Final risk evaluation (August 2020) | Amy Shuman Email: Shuman.Amy@epa.gov Phone: (202) 564-2978 |
| Carbon Tetrachloride | 56-23-5 | Solvents | December 2016 | EPA-HQ-OPPT-2019-0499; | Final risk evaluation (November 2020) | Claudia Menasche Email: Menasche.claudia@epa.gov Phone: (202) 564-3391 |
| C.I. Pigment Violet 29 (PV29) | 81-33-4 | Pigments | December 2016 | EPA-HQ-OPPT-2018-0604; EPA-HQ-OPPT-2016-0725 | Final risk evaluation (January 2021) | Dyllan Taylor Email: taylor.dyllan@epa.gov Phone: (202) 564-2913 |
| Cyclic Aliphatic Bromide Cluster (HBCD) | 25637-99-4; 3194-55-6; 3194-57-8 | Flame retardants | December 2016 | EPA-HQ-OPPT-2019-0237; EPA-HQ-OPPT-2016-0735 | Final risk evaluation (August 2020) |
Alie Muneer |
| 1,4-dioxane | 123-91-1 | Solvents | December 2016 | EPA-HQ-OPPT-2019-0238; EPA-HQ-OPPT-2016-0723 | Final risk evaluation (December 2020) | Cindy Wheeler Email: Wheeler.cindy@epa.gov Phone: (202) 566-0484 |
| Methylene Chloride | 75-09-2 | Solvents | December 2016 | EPA-HQ-OPPT-2019-0437; EPA-HQ-OPPT-2016-0742 | Final risk evaluation (June 2020), Proposed risk management rule (April 2023) | Ingrid Feustel Email: Feustel.ingrid@epa.gov Phone: (202) 564-3199 |
| N-Methylpyrrolidone (NMP) | 872-50-4 | Solvents | December 2016 | EPA-HQ-OPPT-2019-0236; EPA-HQ-OPPT-2016-0743 | Final risk evaluation (December 2020) | Clara Hull Email: hull.clara@epa.gov Phone: (202) 564-3954 |
| Perchloroethylene | 127-18-4 | Solvents | December 2016 | EPA-HQ-OPPT-2019-0502; EPA-HQ-OPPT-2016-0732 | Final risk evaluation (December 2020) |
Kelly Summers |
| Trichlorethylene (TCE) | 79-01-6 | Solvents | December 2016 | EPA-HQ-OPPT-2016-0737; EPA-HQ-OPPT-2019-0500 | Final risk evaluation (November 2020) | Gabriela Rossner Email: Rossner.gabriela@epa.gov Phone: (202) 565-2426 |
| p-Dichlorobenzene | 106-46-7 | N/A | December 2019 | EPA-HQ-OPPT-2018-0446 | Final scope (August 2020) | Ingrid Feustel Email: Feustel.ingrid@epa.gov Phone: (202) 564-3199 |
| 1,2-Dichloroethane | 107-06-2 | Solvents | December 2019 | EPA-HQ-OPPT-2018-0427 | Final scope (August 2020) | Matthew Lloyd Email: Lloyd.matthew@epa.gov Phone: (202) 566-2389 |
| trans-1,2- Dichloroethylene | 156-60-5 | Solvents | December 2019 | EPA-HQ-OPPT-2018-0465 | Final scope (August 2020) | Daniel Whitby Email: whitby.daniel@epa.gov Phone: (202) 564-0598 |
| o-Dichlorobenzene | 95-50-1 | N/A | December 2019 | EPA-HQ-OPPT-2018-0444 | Final scope (August 2020) | Kelly Summers Email: Summers.kelly@epa.gov Phone: (202) 564-2201 |
| 1,1,2-Trichloroethane | 79-00-5 | Solvents | December 2019 | EPA-HQ-OPPT-2018-0421 | Final scope (August 2020) | Simon Regenold Email: Regenold.Simon@epa.gov Phone: (202) 566-1537 |
| 1,2-Dichloropropane | 78-87-5 | Solvents | December 2019 | EPA-HQ-OPPT-2018-0428 | Final scope (August 2020) | Clara Hull Email: Hull.clara@epa.gov Phone: (202) 564-3954 |
| 1,1-Dichloroethane | 75-34-3 | Solvents | December 2019 | EPA-HQ-OPPT-2018-0426 | Final scope (August 2020) | Clara Hull Email: Hull.clara@epa.gov Phone: (202) 564-3954 |
| Dibutyl phthalate (1,2-Benzene- dicarboxylic acid, 1,2- dibutyl ester) | 84-74-2 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0503 | Final scope (August 2020) | Dyllan Taylor Email: Taylor.dyllan@epa.gov Phone: (202) 564-2913 |
| Butyl benzyl phthalate - 1,2-Benzene- dicarboxylic acid, 1- butyl 2(phenylmethyl) ester | 85-68-7 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0501 | Final scope (August 2020) | Dyllan Taylor Email: Taylor.dyllan@epa.gov Phone: (202) 564-2913 |
| Di-ethylhexyl phthalate - (1,2-Benzene- dicarboxylic acid, 1,2- bis(2-ethylhexyl) ester) | 117-81-7 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0433 | Final scope (August 2020) | Dyllan Taylor Email: Taylor.dyllan@epa.gov Phone: (202) 564-2913 |
| Di-isobutyl phthalate - (1,2-Benzene- dicarboxylic acid, 1,2- bis-(2methylpropyl) ester) | 84-69-5 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0434 | Final scope (August 2020) | Jordan Garbin Email: Garbin.jordan@epa.gov Phone: (202) 564-4156 |
| Dicyclohexyl phthalate | 84-61-7 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0504 | Final scope (August 2020) | Claire Brisse Email: Brisse.claire@epa.gov Phone: (202) 564-9004 |
| Di-isodecyl phthalate (DIDP) – (1,2-benzenedicarboxylic acid 1,2-diisodecyl ester) | 26761-40-0, 68515-49-1 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0435 | Final scope (August 2021) | Jeffrey Putt Email: Putt.jeffrey@epa.gov Phone: (202) 564-3703 |
| Di-isononyl phthalate (DINP) – (1,2-benzenedicarboxylic acid, 1,2-diisononyl ester) | 28553-12-0; 68515-48-0 | Phthalates | December 2019 | EPA-HQ-OPPT-2018-0436 | Final scope (August 2021) | Jeffrey Putt Email: Putt.jeffrey@epa.gov Phone: (202) 564-3703 |
| 4,4'-(1-Methylethylidene)bis[2, 6-dibromophenol] (TBBPA) | 79-94-7 | Flame retardants | December 2019 | EPA-HQ-OPPT-2018-0462 | Final scope (August 2020) | Sharay Dixon Email: Dixon.sharay@epa.gov Phone: (202) 565-2428 |
| Tris(2-chloroethyl) phosphate (TCEP) | 115-96-8 | Flame retardants | December 2019 | EPA-HQ-OPPT-2018-0476 | Final scope (August 2020) | Claudia Menasche Email: Menasche.claudia@epa.gov Phone: (202) 564-3391 |
| Phosphoric acid, triphenyl ester (TPP) | 115-86-6 | Flame retardants | December 2019 | EPA-HQ-OPPT-2018-0458 | Final scope (August 2020) | Chloe O'Haire Email: Ohaire.chloe@epa.gov Phone: (202) 564-6785 |
| Ethylene dibromide | 106-93-4 | N/A | December 2019 | EPA-HQ-OPPT-2018-0488 | Final scope (August 2020) | Amy Shuman Email: Shuman.amy@epa.gov Phone: (202) 564-2978 |
| 1,3-Butadiene | 106-99-0 | N/A | December 2019 | EPA-HQ-OPPT-2018-0451 |
Final scope (August 2020) |
Brooke Porter Email: Porter.Brooke@epa.gov Phone: (202) 564-6388 |
| 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta [g]-2-benzopyran (HHCB) | 1222-05-5 | Fragrance additives | December 2019 | EPA-HQ-OPPT-2018-0430 | Final scope (August 2020) | Ana Corado Email: Corado.ana@epa.gov Phone: (202) 564-0140 |
| Formaldehyde | 50-00-0 | N/A | December 2019 | EPA-HQ-OPPT-2018-0438 | Final scope (August 2020) | Jeffrey Putt Email: Putt.jeffrey@epa.gov Phone: (202) 564-3703 |
| Phthalic anhydride | 85-44-9 | N/A | December 2019 | EPA-HQ-OPPT-2018-0459 | Final scope (August 2020) | Sofie Sonner Email: Sonner.Sofia@epa.gov Phone: (202)564-2414 |
| 556-67-2 | N/A | October 2020 | EPA-HQ-OPPT-2018-0443 | Final scope (March 2022) | Scott Drewes Email: Drewes.Scott@epa.gov Phone: (202) 564-8833 |
* Status: “Initiated”: Chemicals that have been designated as a high priority or for which risk evaluation has begun. “Draft Scope”: EPA has published a draft scope document for public comment. “Final Scope”: EPA has published a final scope document (or problem formulation for the first 10). “Draft risk evaluation”: EPA has published a draft risk evaluation. “Final risk evaluation”: EPA has completed a final risk evaluation.