# 2026-14994 — Federal rules taking effect: every published US final rule whose effective date is still in the future

For 2026-14994, rule is Significant New Use Rule on a Certain Chemical Substance; Multi-Walled Carbon Nanotubes; agency is Environmental Protection Agency; effective date is 2026-09-22; dates, as printed is This rule is effective on September 22, 2026. For purposes of judicial review, this rule shall be promulgated at 1 p.m. (EST) on August 7, 2026; cfr parts amended is 40 CFR 721, recorded from its source on 2026-08-10.

- **FR document number:** 2026-14994 _(verified: appears in the quote below)_
- **Rule:** Significant New Use Rule on a Certain Chemical Substance; Multi-Walled Carbon Nanotubes _(verified: appears in the quote below)_
- **Agency:** Environmental Protection Agency _(verified: appears in the quote below)_
- **Effective date:** 2026-09-22 _(verified: appears in the quote below)_
- **DATES, as printed:** This rule is effective on September 22, 2026. For purposes of judicial review, this rule shall be promulgated at 1 p.m. (EST) on August 7, 2026. _(verified: appears in the quote below)_
- **CFR parts amended:** 40 CFR 721 _(our reading, not quoted from the source)_
- **Published:** 2026-07-24 _(verified: appears in the quote below)_

## What the source says

> {"document_number":"2026-14994","title":"Significant New Use Rule on a Certain Chemical Substance; Multi-Walled Carbon Nanotubes","agency_names":["Environmental Protection Agency"],"effective_on":"2026-09-22","dates":"This rule is effective on September 22, 2026. For purposes of judicial review, this rule shall be promulgated at 1 p.m. (EST) on August 7, 2026.","cfr_references":[{"chapter":null,"citation_url":null,"part":"721","title":40}],"publication_date":"2026-07-24","html_url":"https://www.federalregister.gov/documents/2026/07/24/2026-14994/significant-new-use-rule-on-a-certain-chemical-substance-multi-walled-carbon-nanotubes"}

## Source

- https://www.federalregister.gov/api/v1/documents.json?per_page=1000&order=oldest&conditions%5Btype%5D%5B%5D=RULE&conditions%5Beffective_date%5D%5Bgte%5D=2026-08-11&conditions%5Beffective_date%5D%5Blte%5D=2026-12-31&fields%5B%5D=document_number&fields%5B%5D=title&fields%5B%5D=agency_names&fields%5B%5D=effective_on&fields%5B%5D=dates&fields%5B%5D=cfr_references&fields%5B%5D=publication_date&fields%5B%5D=html_url

Last verified: 2026-08-10. Review by: 2026-08-24.
Part of [Federal rules taking effect: every published US final rule whose effective date is still in the future](https://referencesource.org/federal-rules-taking-effect/).