Other
Heterocyclic compounds with oxygen hetero-atom(s) only: > Other: > Other: > Aromatic: > Other: > Other
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2932.99.70.00
Dioxolane
Dioxolane is a five-membered heterocyclic ring compound containing two oxygen hetero-atoms, classified under HTS 2932.99.70.00 as an aromatic heterocyclic compound with oxygen hetero-atoms only. It is commonly used as a solvent and intermediate in organic synthesis.
1,4-Dioxane
1,4-Dioxane is a six-membered heterocyclic ring with two oxygen atoms in 1,4-positions, aromatic heterocyclic compound under HTS 2932.99.70.00. Widely used as an industrial solvent despite regulatory concerns.
Tetrahydrofuran (THF)
Tetrahydrofuran is a five-membered heterocyclic ether with one oxygen hetero-atom, classified as aromatic heterocyclic under HTS 2932.99.70.00. Essential solvent in pharmaceutical and polymer manufacturing.
Morpholine
Morpholine is a six-membered heterocyclic compound with one oxygen and one nitrogen hetero-atom, but classified under oxygen-only heterocycles per HTS hierarchy 2932.99.70.00 when oxygen function predominates. Used in rubber vulcanization and corrosion inhibition.
Furan
Furan is a five-membered aromatic heterocyclic compound with one oxygen hetero-atom, specifically classified under HTS 2932.99.70.00. Used as solvent and in resin production.
2,5-Furandicarboxylic Acid
2,5-Furandicarboxylic acid (FDCA) is an aromatic heterocyclic oxygen compound with carboxylic acid groups, classified under HTS 2932.99.70.00. Bio-based alternative to terephthalic acid for PET production.
Gamma-Butyrolactone (GBL)
Gamma-butyrolactone is a five-membered lactone ring heterocyclic with oxygen hetero-atom, aromatic under HTS 2932.99.70.00. Used as solvent and precursor to GHB.
Epichlorohydrin
Epichlorohydrin is a three-membered epoxide ring heterocyclic with oxygen hetero-atom, classified under HTS 2932.99.70.00 as other aromatic oxygen heterocycles. Key raw material for epoxy resins.
Trioxane
1,3,5-Trioxane is a six-membered heterocyclic ring with three oxygen hetero-atoms, classified under HTS 2932.99.70.00. Used as fuel tablets and formaldehyde source.
Cyclic Ethylene Carbonate
Ethylene carbonate is a five-membered cyclic carbonate ester with oxygen hetero-atoms, classified under HTS 2932.99.70.00 as aromatic oxygen heterocycle. Used in lithium battery electrolytes.
2-Methylfuran
2-Methylfuran is an aromatic five-membered heterocyclic with one oxygen hetero-atom and methyl substituent, under HTS 2932.99.70.00. Biofuel component and flavoring agent.
Tetrahydrofurfuryl Alcohol
Tetrahydrofurfuryl alcohol (THFA) is a furan ring with hydroxymethyl substituent, classified as oxygen heterocyclic under HTS 2932.99.70.00. Green solvent for coatings and resins.
1,3-Dioxolane
1,3-Dioxolane is a five-membered cyclic acetal with two oxygen hetero-atoms, classified under HTS 2932.99.70.00. Used in battery electrolytes and polymer synthesis.
Cyclic Trimethylolpropane Formal
Cyclic TMP formal is a bicyclic acetal with multiple oxygen hetero-atoms, classified under HTS 2932.99.70.00 as complex oxygen heterocycle. Radiation curable coating monomer.
2(3H)-Furanone Dihydro
Dihydro-2(3H)-furanone (gamma-butyrolactone alternative name) is a five-membered lactone oxygen heterocycle under HTS 2932.99.70.00. Pharmaceutical intermediate and solvent.