EPA announces the deadlines for the 2024 chemical data reporting (CDR) cycle. From June 1 to September 30, 2024, CDR (Chemical Data Reporting) submissions will be accepted. TSCA Inventory contains 86,405 chemicals of which 41,484 are active in U.S commerce. The CDR rule requires that manufacturers and importers of chemical substances on the TSCA Inventory above an applicable regulatory threshold report to the EPA. This facilitates screening of the chemical. This happens every four years and requires information about the manufacturing, processing, and use of such chemical substances, unless exempt from this requirement under the CDR rule. For this period, manufacturers and importers are subject to the reporting requirements based on manufacturing activities conducted during the calendar year (2020,2021,2022,2023).


Under the CDR rule (40 CFR part 711), EPA collects basic exposure-related information on chemical substances (about their types, quantities, and uses) produced domestically and imported into the United States. The CDR database comprises the most complete collection of fundamental exposure-related data regarding chemicals that enables the EPA to screen chemicals and enhance the protection of the public from probable chemical dangers.

New requirement for 2024 CDR reporting

Future submission periods or 2024 report submission periods require the submitter to use the OECD-based codes for all chemical substances. The TSCA CDR Revisions Rule led to a partial implementation of the OECD-based codes for the 2020 CDR.

Refer to regulatory text 40 CFR 711.15(b)(4)(i)(C)(2) and 40 CFR 711.15(b)(4)(ii)(A)(2)) for OECD-based codes and, Appendix D (85 FR 20122) for instruction for reporting.


1. EPA Announces 2024 Chemical Data Reporting Deadlines | US EPA
2. https://www.regulations.gov/document/EPA-HQ-OPPT-2023-0316-0001


Reach out to our regulation experts on chemical and product regulatory compliances