Rule lifecycle · RIN:2070-AB27
Significant New Use Rules on Certain Chemical Substances (24-5.5e)
Environmental Protection Agency — observed across 8 documents over 124 days. Use the source documents below before deciding whether this affects your business.
In plain English
The EPA requires companies to report to the agency before using certain chemicals in new ways to ensure worker and environmental safety. If your business makes or imports chemicals, check the EPA's new list for your chemicals and submit required notifications 90 days before launching new applications.
First seen
Apr 24, 2026
Last seen
Aug 26, 2026
Latest stage
Rule
PRORULE → RULE
28d
Effective on
Monday, October 26, 2026
Stage timeline
Proposed·Apr 24, 2026·91 FR 22075
Significant New Use Rules on Certain Chemical Substances (26-2)
comments close May 26, 2026#2026-08012
Final·May 22, 2026·91 FR 30226
Significant New Use Rules on Certain Chemical Substances (25-1.5e)
effective Jul 21, 2026#2026-10264
Proposed·Jun 5, 2026·91 FR 34480
Significant New Use Rules on Certain Chemical Substances (25-3.5e)
comments close Jul 6, 2026#2026-11319
Proposed·Jun 10, 2026·91 FR 35156
Significant New Use Rules on Certain Chemical Substances (26-1)
comments close Jul 10, 2026#2026-11593
Proposed·Jul 23, 2026·91 FR 46364
Significant New Use Rules on Certain Chemical Substances (26-3)
comments close Aug 24, 2026#2026-14877
Final·Jul 24, 2026·91 FR 46742
Significant New Use Rule on a Certain Chemical Substance; Multi-Walled Carbon Nanotubes
effective Sep 22, 2026#2026-14994
Proposed·Jul 30, 2026·91 FR 48044
Significant New Use Rules on Certain Chemical Substances (26-4)
comments close Aug 31, 2026#2026-15352
Final·Aug 26, 2026·91 FR 54992
Significant New Use Rules on Certain Chemical Substances (24-5.5e)
effective Oct 26, 2026#2026-17400