For purposes of this subchapter—
The term "taxable substance" means any substance which, at the time of sale or use by the importer, is listed as a taxable substance by the Secretary for purposes of this subchapter.
A substance shall be listed under paragraph (1) if—
(A) the substance is contained in the list under paragraph (3), or
(B) the Secretary determines, in consultation with the Administrator of the Environmental Protection Agency and the Commissioner of U.S. Customs and Border Protection, that taxable chemicals constitute more than 20 percent of the weight (or more than 20 percent of the value) of the materials used to produce such substance (determined on the basis of the predominant method of production).
If an importer or exporter of any substance requests that the Secretary determine whether such substance be listed as a taxable substance under paragraph (1) or be removed from such listing, the Secretary shall make such determination within 180 days after the date the request was filed.
| Cumene | Methylene chloride |
| Styrene | Polypropylene |
| Ammonium nitrate | Propylene glycol |
| Nickel oxide | Formaldehyde |
| Isopropyl alcohol | Acetone |
| Ethylene glycol | Acrylonitrile |
| Vinyl chloride | Methanol |
| Polyethylene resins, total | Propylene oxide |
| Polybutadiene | Polypropylene resins |
| Styrene-butadiene, latex | Ethylene oxide |
| Styrene-butadiene, snpf | Ethylene dichloride |
| Synthetic rubber, not containing fillers | Cyclohexane |
| Urea | Isophthalic acid |
| Ferronickel | Maleic anhydride |
| Ferrochromium nov 3 pct | Phthalic anhydride |
| Ferrochrome ov 3 pct. carbon | Ethyl methyl ketone |
| Unwrought nickel | Chloroform |
| Nickel waste and scrap | Carbon tetrachloride |
| Wrought nickel rods and wire | Chromic acid |
| Nickel powders | Hydrogen peroxide |
| Phenolic resins | Polystyrene homopolymer resins |
| Polyvinylchloride resins | Melamine |
| Polystyrene resins and copolymers | Acrylic and methacrylic acid resins |
| Ethyl alcohol for nonbeverage use | Vinyl resins |
| Ethylbenzene | Vinyl resins, NSPF. |
The Secretary shall add to the list under paragraph (3) substances which meet either the weight or value tests of paragraph (2)(B) and may remove from such list only substances which meet neither of such tests.
For purposes of this subchapter—
The term "importer" means the person entering the taxable substance for consumption, use, or warehousing.
The terms "taxable chemical" and "United States" have the respective meanings given such terms by section 4662(a).
The provisions of subsections (a)(3) and (b)(3) of section 7652 shall not apply to any tax imposed by section 4671.
(Added Pub. L. 99–499, title V, §515(a), Oct. 17, 1986, 100 Stat. 1768; amended Pub. L. 100–647, title II, §2001(b), Nov. 10, 1988, 102 Stat. 3594; Pub. L. 114–125, title VIII, §802(d)(2), Feb. 24, 2016, 130 Stat. 210; Pub. L. 117–58, div. H, title II, §80201(c)(1), Nov. 15, 2021, 135 Stat. 1330.)
2021—Subsec. (a)(2)(B). Pub. L. 117–58 substituted "20 percent" for "50 percent" in two places.
1988—Subsec. (a)(2). Pub. L. 100–647, §2001(b)(2), inserted at end "If an importer or exporter of any substance requests that the Secretary determine whether such substance be listed as a taxable substance under paragraph (1) or be removed from such listing, the Secretary shall make such determination within 180 days after the date the request was filed."
Subsec. (a)(2)(B). Pub. L. 100–647, §2001(b)(1), inserted "(or more than 50 percent of the value)" after "weight".
Subsec. (a)(4). Pub. L. 100–647, §2001(b)(3), amended par. (4) generally. Prior to amendment, par. (4) read as follows:
"(A)
"(B)
"Commissioner of U.S. Customs and Border Protection" substituted for "Commissioner of Customs" in subsec. (a)(2)(B) on authority of section 802(d)(2) of Pub. L. 114–125, set out as a note under section 211 of Title 6, Domestic Security.
Amendment by Pub. L. 117–58 effective July 1, 2022, see section 80201(d) of Pub. L. 117–58, set out as a note under section 4661 of this title.
Amendment by Pub. L. 100–647 effective, except as otherwise provided, as if included in the provision of the Superfund Revenue Act of 1986, Pub. L. 99–499, title V, to which it relates, see section 2001(e) of Pub. L. 100–647, set out as a note under section 56 of this title.
Section effective Jan. 1, 1989, see section 515(c) of Pub. L. 99–499, set out as a note under section 4671 of this title.
For transfer of functions, personnel, assets, and liabilities of the United States Customs Service of the Department of the Treasury, including functions of the Secretary of the Treasury relating thereto, to the Secretary of Homeland Security, and for treatment of related references, see sections 203(1), 551(d), 552(d), and 557 of Title 6, Domestic Security, and the Department of Homeland Security Reorganization Plan of November 25, 2002, as modified, set out as a note under section 542 of Title 6. For establishment of U.S. Customs and Border Protection in the Department of Homeland Security, treated as if included in Pub. L. 107–296 as of Nov. 25, 2002, see section 211 of Title 6, as amended generally by Pub. L. 114–125, and section 802(b) of Pub. L. 114–125, set out as a note under section 211 of Title 6.
Pub. L. 117–58, div. H, title II, §80201(c)(2), Nov. 15, 2021, 135 Stat. 1330, provided that: "Except as otherwise determined by the Secretary of the Treasury (or the Secretary's delegate), any substance which was determined to be a taxable substance by reason of section 4672(a)(2) of the Internal Revenue Code of 1986 prior to the date of enactment of this Act [Nov. 15, 2021] shall continue to be treated as a taxable substance for purposes of such section after such date."
Pub. L. 117–58, div. H, title II, §80201(c)(3), Nov. 15, 2021, 135 Stat. 1330, provided that: "Not later than January 1, 2022, the Secretary of the Treasury (or the Secretary's delegate) shall publish an initial list of taxable substances under section 4672(a) of the Internal Revenue Code of 1986."
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