Manufacturer-Requested Risk Evaluation of Diisononyl Phthalate (DINP
EPA published the final the scope of the risk evaluation for DINP on August 31, 2025. Additional information may be updated periodically in accordance with 40 CFR 702.37(e)(5) of the Risk Evaluation rule. Back to list of manufacturer-requested risk evaluations. Final Scope of the Risk Evaluation for DINP (3.41 MB)
EPA Releases Final Scope Documents for Manufacturer-Requested Risk
EPA Releases Final Scope Documents for Manufacturer-Requested Risk Evaluations of DIDP and DINP WASHINGTON (August 31, 2025) - Today, EPA is releasing final scope documents for Toxic Substances Control Act (TSCA) risk evaluations of diisodecyl phthalate ( DIDP) and diisononyl phthalate ( DINP ).
Risk Evaluation for Di-isodecyl phthalate (DIDP) (1,2-Benzene
Assessing and Managing Chemicals under TSCA Risk Evaluation for Di-isodecyl phthalate (DIDP) (1,2-Benzene- dicarboxylic acid, 1,2- diisodecyl ester) General Information for DIDP Chemical Group: Phthalates CASRN: 26761-40-0 and 68515-49-1 Manufacturer Request Granted: December 2025 Docket: EPA-HQ-OPPT-2018-0435 Staff Contact: Jeffrey Putt
List of Manufacturer-Requested Risk Evaluations under TSCA Section 6
List of Manufacturer-Requested Risk Evaluations under TSCA Section 6 TSCA allows chemical manufacturers to request an EPA-conducted risk evaluation of the chemical under 40 CFR 702.37. A manufacturer may request that EPA conduct a risk evaluation for conditions of use of interest to the manufacturer.
Risk Evaluation for Di-isononyl phthalate (DINP) (1,2-Benzene
EPA granted the manufacturer request for risk evaluation for di-isononyl phthalate (DINP) (1,2-benzenedicarboxylic acid, 1,2-isononyl ester) in December 2025, and this category of chemicals is currently undergoing risk evaluation. Learn more about manufacturer-requested risk evaluations.
- What is the EPA risk evaluation for DINP?
- EPA published the risk evaluation for DINP in January 2025. Read the risk evaluation for DINP. DINP belongs to a family of chemicals called phthalates and is commonly used as a plasticizer in the production of plastic and plastic coating to increase flexibility.
- How did EPA evaluate a DINP request?
- EPA reviewed the request (along with additional information received during the public comment period) and assessed whether the circumstances identified in the request constitute conditions of use under 40 CFR 702.33, and whether those conditions of use warrant inclusion within the scope of a risk evaluation for DINP.
- How did EPA evaluate a DIDP request?
- EPA reviewed the request (along with additional information received during the public comment period) and assessed whether the circumstances identified in the request constitute conditions of use under 40 CFR 702.33, and whether those conditions of use warrant inclusion within the scope of a risk evaluation for DIDP.
- Did EPA request a risk evaluation for Diisodecyl phthalate (DIDP)?
- On this page: On May 24, 2019, EPA received a request from ExxonMobil Chemical Company, through the American Chemistry Council’s High Phthalates Panel, to conduct a risk evaluation for diisodecyl phthalate (DIDP). On August 19, 2019, EPA opened a 45-day public comment period to gather information relevant to the requested risk evaluation.
- Can a manufacturer request an EPA-conducted Risk Evaluation?
- Oops, something went wrong. Check your browser's developer console for more details. TSCA allows chemical manufacturers to request an EPA-conducted risk evaluation of the chemical under 40 CFR 702.37. A manufacturer may request that EPA conduct a risk evaluation for conditions of use of interest to the manufacturer.
- When will EPA release the final scope document for DIDP?
- EPA granted manufacturer requests for risk evaluations for these chemical categories in December 2019, and released draft scope documents in November 2020. Manufacturer-requested risk evaluations are generally conducted in the same manner as other risk evaluations conducted under TSCA. View the final scope document for DIDP.
