Rule lifecycle · RIN:2070-AB27
Significant New Use Rules on Certain Chemical Substances (26-4)
Environmental Protection Agency — observed across 7 documents over 97 days. Use the source documents below before deciding whether this affects your business.
In plain English
The EPA is proposing rules that require companies to notify the agency before using certain chemicals in new ways. If your small business uses any of these chemicals, read the proposal before August 31st and tell the EPA if the new rules would change how you operate.
First seen
Apr 24, 2026
Last seen
Jul 30, 2026
Latest stage
Proposed Rule
PRORULE → RULE
28d
Comments close
Monday, August 31, 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