🧪Superfund Tax on Chemical Substances
This notice of determinations modifies the list of taxable substances to include the following 39 substances: acrylonitrile- butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>n</INF>- (C<INF>3</INF>H<INF>3</INF>N)<INF>m</INF>; n=13.44, m=25.54), bromo- isobutene-isoprene rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>n</INF>- (C<INF>5</INF>H<INF>7.5</INF>Br<INF>0.5</INF>)<INF>m</INF>; n=98.20, m=1.80), chloroprene rubber, ethylene-propylene-ethylidene norbornene rubber ((C<INF>2</INF>H<INF>4</INF>)<INF>m</INF>- (C<INF>3</INF>H<INF>6</INF>)<INF>n</INF>(C<INF>9</INF>H<INF>12</INF>)<INF>o</INF> ; m=56.82, n=40.46, o=2.71), ethylene vinyl acetate (VA < 50%) ((C<INF>2</INF>H<INF>4</INF>)<INF>n</INF>- (C<INF>4</INF>H<INF>6</INF>O<INF>2</INF>)<INF>m</INF>; n=78.95, m=21.05), ethylene vinyl acetate (VA >= 50%) ((C<INF>2</INF>H<INF>4</INF>)<INF>n</INF>- (C<INF>4</INF>H<INF>6</INF>O<INF>2</INF>)<INF>m</INF>; n=75.42, m=24.58), hydrogenated acrylonitrile-butadiene rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>n</INF>- (C<INF>3</INF>H<INF>3</INF>N)<INF>m</INF>; n=22.28, m=38.86), isobutene-isoprene rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>n</INF>- (C<INF>5</INF>H<INF>8</INF>)<INF>m</INF>; n=99.10, m=0.90), poly(ethylene-propylene) rubber ((C<INF>2</INF>H<INF>4</INF>)<INF>m</INF>- (C<INF>3</INF>H<INF>6</INF>)<INF>n</INF>; m=59.04, n=40.96), emulsion styrene-butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>m</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>n</INF>; m=15.83, n=2.53), solution styrene-butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>m</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>n</INF>; m=67.16, n=32.85), emulsion styrene butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>m</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>n</INF>; m=14.14, n=2.26), solution styrene-butadiene rubber ((C<INF>4</INF>H<INF>6</INF>)<INF>m</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>n</INF>; m=13.31, n=2.50), hydrogenated acrylonitrile-butadiene rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>x</INF>- (C<INF>3</INF>H<INF>3</INF>N)<INF>y</INF>- (C<INF>15</INF>H<INF>24</INF>O)<INF>a</INF>; x=2,783.05, y=1,907.27, a=5.74), bromobutyl isobutylene isoprene rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>x</INF>(C<INF>5</INF>H<INF>8</INF>)<INF>y</INF> (Br<INF>2</INF>)<INF>z</INF>; x=7071, y=59, z=50), chlorobutyl isobutylene isoprene rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>x</INF>(C<INF>5</INF>H<INF>8</INF>)<INF>y</INF> (Cl<INF>2</INF>)<INF>z</INF>); x=7036, y=88, z=70), DIPE-di-isopropyl ether, di-isodecyl phthalate, di-isononyl adipate, di-isononyl phthalate, di-tridecyl phthalate, ethylene propylene diene (EPDM) rubber ((C<INF>2</INF>H<INF>4</INF>)<INF>x</INF>(C<INF>3</INF>H<INF>6</INF>)<INF>y</INF> (C<INF>9</INF>H<INF>12</INF>)<INF>z</INF>; x=5134, y=2250, z=98), isodecyl alcohol, isodecyl benzoate, isooctyl alcohol, linear nonyl phthalate, linear nonyl undecyl phthalate, linear undecyl phthalate, linear nonyl tri-mellitate, neo decanoic acid, neo pentanoic acid, nonene, regular butyl rubber ((C<INF>4</INF>H<INF>8</INF>)<INF>x</INF>(C<INF>5</INF>H<INF>8</INF>)<INF>y</INF> ; x=7036, y=88), tridecyl alcohol, tri-isononyl tri-mellitate, di- isobutylene, polyisobutylene, styrene-acrylonitrile ((C<INF>3</INF>H<INF>3</INF>N)<INF>a</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>s</INF>; a=0.26, s=0.74), and acrylonitrile butadiene styrene ((C<INF>3</INF>H<INF>3</INF>N)<INF>a</INF>- (C<INF>4</INF>H<INF>6</INF>)<INF>b</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>s</INF>; a=0.16, b=0.10, s=0.74),
Learn More🔬EPA's New Use Rules for Chemical Substances
EPA is issuing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and a Microbial Commercial Activity Notice (MCAN) and are also subject to an Order issued by EPA pursuant to TSCA. The SNURs require persons to notify EPA at least 90 days before commencing the manufacture (defined by statute to include import) or processing of any of these chemical substances for an activity that is designated as a significant new use in the SNUR. The required notification initiates EPA's evaluation of the conditions of that use for that chemical substance. In addition, the manufacture or processing for the significant new use may not commence until EPA has conducted a review of the required notification; made an appropriate determination regarding that notification; and taken such actions as required by that determination.
Learn More⚖️Correction to Significant New Use Rules on Chemical Substances
EPA is making a correction to a final rule that appeared in the Federal Register of June 23, 2025 (FR Doc. 2025-11489). The final rule established significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMNs) and Orders issued by EPA pursuant to TSCA.
Learn More⚗️EPA Corrects Significant New Use Rules for Chemical Substances
EPA is making corrections to a final rule that appeared in the Federal Register of June 13, 2025 (FR Doc. 2025-10812). The final rule established significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMNs) and Orders issued by EPA pursuant to TSCA.
Learn More🧪EPA Withdraws Proposed Rules on Significant New Uses for Chemicals
In the Federal Register of June 20, 2023, EPA proposed significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for 18 chemical substances that were the subject of premanufacture notices (PMNs) and a subsequent TSCA Order. EPA is withdrawing the proposed rules because the Agency withdrew the TSCA Order that was the basis of the rules on December 18, 2024.
Learn More⚖️Nonene Tax Filing Notice and Public Comment Opportunities
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.
Learn More🧪Notice on Superfund Tax for Tri-isononyl Tri-Mellitate
This notice of filing announces that a petition has been filed requesting that tri-isononyl tri-mellitate 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.
Learn More⚗️IRS Notice on Adding Tridecyl Alcohol to Taxable Substances List
This notice of filing announces that a petition has been filed requesting that tridecyl alcohol 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.
Learn More🧪IRS Notice on Taxability of Linear Nonyl UnDecyl Phthalate
This notice of filing announces that a petition has been filed requesting that linear nonyl undecyl phthalate 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.
Learn More🧪Notice on Superfund Tax for Neo Pentanoic Acid Filing
This notice of filing announces that a petition has been filed requesting that neo pentanoic acid 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.
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