This notice of determinations modifies the list of taxable substances to include the following 21 substances: polyphenylene sulfide, cellulose acetate (degree of substitution = 1.5-2.0), 4,4'- isopropylidenediphenol-epichlorohydrin copolymer, nylon 6, caprolactam, methyl ethyl ketoxime, iso-butanol, diethylene glycol monomethyl ether, ethylene glycol phenyl ether, methoxytriglycol, propylene glycol methyl ether acetate, propylene glycol methyl ether, propylene glycol n-propyl ether, propylene glycol phenyl ether, di-isobutyl carbinol, di-isobutyl ketone, methyl isobutyl carbinol, cyanuric acid, potassium bicarbonate, potassium carbonate, and sodium chlorite. This notice also modifies the list included in Notice 2021-66 by correcting a typographical error in the spelling of the name of the taxable substance sodium nitrilotriacetate monohydrate and prescribing a tax rate for sodium nitrilotriacetate monohydrate.
This is a notice published in the Federal Register by Treasury Department, Internal Revenue Service. Notices communicate information, guidance, or policy interpretations but may not create new binding obligations.
This document is classified as a notice. It may or may not create enforceable regulatory obligations depending on its specific content.
Notice of determinations.
This document has been effective since January 1, 2026.
| Document Number | 2025-14705 |
| FR Citation | 90 FR 36520 |
| Type | Notice |
| Published | Aug 4, 2025 |
| Effective Date | Jan 1, 2026 |
| RIN | - |
| Docket ID | - |
| Pages | 36520–36534 (15 pages) |
| Text Fetched | No |
| Part | Name | Agency |
|---|---|---|
| No linked CFR parts | ||
| Type | Proposed | Final | Method | Conf |
|---|---|---|---|---|
| No paired documents | ||||
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