Di-isononyl Phthalate (DINP); Final Scope of the Risk
The purpose of risk evaluation is to determine whether a chemical substance, or group of chemical substances, presents an unreasonable risk to health or the environment, under the conditions of use, including an unreasonable risk to a relevant potentially exposed or susceptible subpopulation ( 15 U.S.C. 2605 (b) (4) (A) ).
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.
Manufacturer-Requested Risk Evaluation of Diisononyl
Manufacturer-Requested Risk Evaluation of Diisononyl Phthalate (DINP) Documents supporting the TSCA section 6 manufacturer request for risk evaluation submitted by ExxonMobil Chemical Company, Evonik Corporation, and Teknor Apex, through the American Chemistry Council’s High Phthalates Panel, are provided below.
Di-isononyl Phthalate (DINP); Draft Scope of the Risk
Di-isononyl Phthalate (DINP) (1,2-Benzene- dicarboxylic acid, 1,2- diisononyl ester); Manufacturer Request for Risk Evaluation Under the Toxic Substances Control Act (TSCA); Notice of Availability and Request for Comments. Federal Register. ( 84 FR 42912, August 19, 2025) (FRL-9998-25). (Authority: 15 U.S.C. 2601 et seq.) Andrew Wheeler,
Federal Register/ Vol. 85, No. 229 / Friday, November 27
III. Draft Scope of the Risk Evaluation for Di-isononyl phthalate (DINP) The category of chemical substances for which EPA is publishing the draft scope of the risk evaluation includes the following chemical substances: 1,2- benzene-dicarboxylic acid, 1,2- diisononyl ester (CASRN 28553–12–0), and 1,2-benzenedicarboxylic acid, di-
- Is Di-isononyl phthalate (DINP) benzenedicarboxylic acid a risk?
- EPA granted the manufacturer request for risk evaluation for di-isononyl phthalate (DINP) 1,2-benzenedicarboxylic acid, 1,2-isononyl ester in December 2019 and the chemical is currently undergoing risk evaluation.
- When did EPA release a risk evaluation for diisononyl phthalate (DINP)?
- In January 2025, EPA released the final risk evaluation under the Toxic Substances Control Act (TSCA) for diisononyl phthalate (1,2-benzenedicarboxylic acid, 1,2-isononyl ester) (DINP). EPA granted the manufacturer request for risk evaluation for DINP in December 2019. Learn more about manufacturer-requested risk evaluations.
- What is a CAS RN for diisononyl phthalate?
- 1 Introduction On May 23rd EPA received a manufacturer requested risk evaluation for diisononyl phthalate (DINP; CAS RN 28553-12-0 & 68515-48-0). This substance is represented by two CAS RNs (28553-12-0 & 68515-48-0) that reflect differences in how the chemical is manufactured.
- What does TSCA stand for in diisononyl phthalate (DINP)?
- The Environmental Protection Agency (EPA or Agency) is announcing the availability of the final risk evaluation under the Toxic Substances Control Act (TSCA) for diisononyl phthalate (DINP) (1,2-Benzene- dicarboxylic acid, 1,2- diisononyl ester) (CASRN 28553- 12-0).
- Does DINP cause phthalate syndrome?
- Therefore, EPA is including DINP in its cumulative risk analysis for six phthalates that demonstrate effects consistent with phthalate syndrome. Workers may be exposed to DINP when making products or otherwise using DINP in the workplace.
- Did EPA request a risk evaluation for DINP & DIDP?
- On May 24, 2019, EPA received requests to conduct risk evaluations for both DINP and DIDP from ExxonMobil Chemical Company, Evonik Corporation, and Teknor Apex, through the American Chemistry Council's High Phthalates Panel (ACC HPP). In December 2019, EPA notified ACC HPP that the Agency had granted their manufacturer requested risk evaluations.
