# 2025-09131: IRS Considers Adding Nonene to the Superfund Tax List

2025-09131, Superfund Tax on Chemical Substances; Request To Modify List of Taxable Substances; Notice of Filing for Nonene, is a Federal Register notice from Treasury Department, Internal Revenue Service published 2025-05-21, effective Written comments and requests for a public hearing must be received on or before July 21, 2025.; PRIA reads it as touching household money (as of 2026-10-22).

- Canonical: https://policyrisk.com/federal-register/2025-09131
- As of: 2026-10-22
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-09131
- Title: Superfund Tax on Chemical Substances; Request To Modify List of Taxable Substances; Notice of Filing for Nonene
- Type: Notice
- Agencies: Treasury Department; Internal Revenue Service
- Citation: 90 FR 21826
- Published: 2025-05-21
- Effective: Written comments and requests for a public hearing must be received on or before July 21, 2025.
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-10-22

## In one line

IRS Considers Adding Nonene to the Superfund Tax List

## Summary

The IRS got a request to add a chemical called nonene to the list of substances taxed under the Superfund program. If added, companies dealing with nonene might pay new taxes to help clean up pollution. People have until July 21, 2025, to share their thoughts or ask for a public hearing before any decision is made.

## Abstract

This notice of filing announces that a petition has been filed requesting that nonene be added to the list of taxable substances. This notice of filing also requests comments on the petition. This notice of filing is not a determination that the list of taxable substances is modified.

## Effects PRIA read

- Petition to Add Nonene to Superfund Tax List: cost, low. A petition was filed asking the IRS to add nonene to the list of chemicals taxable under Internal Revenue Code section 4672(a). The petition was filed May 1, 2025 by Exxon Mobil Corporation and includes petitioner calculations showing a potential tax rate of $8.77 per ton, a conversion factor of 0.…

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## Sources
- [2025-09131 on federalregister.gov](https://www.federalregister.gov/documents/2025/05/21/2025-09131/superfund-tax-on-chemical-substances-request-to-modify-list-of-taxable-substances-notice-of-filing)
- [2025-09131 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-05-21/pdf/2025-09131.pdf)

## Related
- [Previous: 2025-09130, Entry-Level Driver Training: William Cole; Application for Exemption](https://policyrisk.com/federal-register/2025-09130)
- [Next: 2025-09132, Superfund Tax on Chemical Substances; Request To Modify List of Taxable Substan…](https://policyrisk.com/federal-register/2025-09132)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-09131 (as of 2026-10-22).