Di-isononyl Phthalate (DINP); Final Scope of the Risk
In the Federal Register of November 27, 2025 (Ref. 2), EPA announced the availability of the draft scope document for the risk evaluation to be conducted for DINP under TSCA and invited public comments on EPA's draft scope document, including additional data or information relevant to the category of chemical substances or that otherwise could be
Risk Evaluation for Di-isononyl phthalate (DINP) (1
The agency released the draft scope in November 2025 and took public comments on the draft document. Read the final scope of the risk evaluation for DINP and EPA's response to comments on the draft scope. Read the supporting and decision documents for this manufacturer-requested risk evaluation.
Di-isononyl Phthalate (DINP); Draft Scope of the Risk
The draft scope document for this category of chemical substances includes the conditions of use, hazards, exposures, and the potentially exposed or susceptible subpopulations EPA plans to consider in conducting the risk evaluation for this category of chemical substances.
EPA Releases Final Scope Documents for Manufacturer-Requested
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-isononyl phthalate (DINP) (1,2-Benzene
In the draft scope of the DINP risk evaluation, EPA preliminarily identified conditions of use associated with the importing; processing; distribution in commerce; industrial, commercial and consumer uses; and disposal of DINP, including: As a plasticizer in polyvinyl chloride (PVC); In building and construction materials;
- Does EPA have a scope document for DINP risk evaluation?
- Pursuant to 40 CFR 702.41 (c) (7), EPA announced the availability of and sought public comment on the draft scope document for the risk evaluation to be conducted for DINP under TSCA ( 85 FR 76072, November 27, 2020) (FRL–10017–15) (Ref. 2).
- 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.
- When did EPA release a risk evaluation for DINP?
- In May 2024, the Environmental Hazard and Human Health Hazard technical support documents for DINP were released for public comment and peer review by the Science Advisory Committee on Chemicals (SACC) (Ref. 4). In September 2024, EPA released a full draft risk evaluation for public comment (Ref. 5).
- When did EPA release Draft Scope documents?
- EPA used feedback received on the draft scoping documents during the public comment period to inform the final documents. EPA granted manufacturer requests for risk evaluations for these chemical categories in December 2019, and released draft scope documents in November 2020.
- When did EPA release a draft risk evaluation for public comment?
- In September 2024, EPA released a full draft risk evaluation for public comment (Ref. 5). The draft documents and public comments are in docket ID number EPA-HQ-OPPT-2024-0436.
- What is a scope document?
- The scope document includes the conditions of use, hazards, exposures, and the potentially exposed or susceptible subpopulations that EPA plans to consider in conducting the risk evaluation for this category of chemical substances.
