Chapter 2902 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 29.02
Anhydrous Cyclohexane Solvent
Anhydrous cyclohexane is a water-free form of the cyclic hydrocarbon, used in moisture-sensitive organic syntheses and Grignard reactions. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a). Supplied in sure-seal bottles to maintain anhydrous conditions.
2902.11.00Cyclohexane ACS Reagent Grade
Cyclohexane ACS reagent grade is a high-purity cyclic hydrocarbon used as a solvent in laboratory applications and chemical synthesis. It is a separate chemically defined organic compound, consistent with Chapter 29 Note 1(a). It meets stringent purity standards for analytical work.
2902.11.00Cyclohexane HPLC Grade
Cyclohexane HPLC grade is an ultra-pure form of the cyclic hydrocarbon, specifically for high-performance liquid chromatography mobile phases. It is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). Its high purity ensures reliable analytical results.
2902.11.00Cyclohexane NMR Solvent-d12
Cyclohexane NMR solvent-d12 is fully deuterated cyclohexane (C6D12), used as an NMR lock solvent and deuterium source. It is a separate chemically defined organic compound, and isotopic substitution does not change its classification under Chapter 29. It is essential for nuclear magnetic resonance spectroscopy.
2902.11.00Cyclohexane Rubber Solvent
Cyclohexane rubber solvent is a low-aromatic form of the cyclic hydrocarbon, used in tire manufacturing and rubber processing. It is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It is distinguished from naphtha by its high cyclohexane content.
2902.11.00Industrial Cyclohexane 99.5% Pure
Industrial cyclohexane 99.5% pure is a technical-grade cyclic hydrocarbon used in large-scale manufacturing of nylon precursors like adipic acid and caprolactam. It is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It is an essential feedstock in the chemical industry.
2902.11.00Technical Cyclohexane for Adhesives
Technical cyclohexane for adhesives is 99% pure cyclic hydrocarbon used as a volatile component in rubber cement and adhesive formulations. It is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It provides solvency for natural rubber and resins.
2902.19.001,3-Dimethylcyclohexane
1,3-Dimethylcyclohexane is a disubstituted cycloalkane, a saturated cyclic hydrocarbon. It is used as an intermediate in fragrance synthesis and as a calibration standard in gas chromatography, and qualifies as an 'other' cyclane under this tariff item.
2902.19.00Adamantane
Adamantane (C10H16) is a highly symmetrical tricyclic cyclane used in pharmaceutical intermediates and materials science. It is a saturated cyclic hydrocarbon, classified as an 'other' cyclane under this tariff item.
2902.19.00Bicyclo[2.2.1]heptane
Bicyclo[2.2.1]heptane is a saturated bicyclic cyclane used in polymer precursor synthesis and fragrance chemistry. It is a separate chemically defined compound, classified as an 'other' cyclane under this tariff item.
2902.19.00Cyclodecane
Cyclodecane (C10H20) is a medium-ring saturated cycloalkane used as a phase-change material and polymer precursor. It is a separate chemically defined compound, classified as an 'other' cyclane under this tariff item.
2902.19.00Cycloheptane
Cycloheptane (C7H14) is a seven-membered saturated cycloalkane used as a solvent and reaction medium in chemical manufacturing. It is a separate chemically defined compound, classified as an 'other' cyclane under this tariff item.
2902.19.00Cyclohexane
Cyclohexane is a six-carbon saturated cyclic hydrocarbon (C6H12), a cyclane used primarily as an industrial solvent. It is a separate chemically defined compound, falling under this tariff item as an 'other' cyclane.
2902.19.00Cyclooctane
Cyclooctane is an eight-membered ring cycloalkane (C8H16), a saturated cyclic hydrocarbon. It is used in organometallic catalyst preparation and polymer research, and is classified as an 'other' cyclane under this tariff item.
2902.19.00Cyclopentane
Cyclopentane is a five-membered ring cycloalkane (C5H10), a saturated cyclic hydrocarbon. It is primarily used as a blowing agent in polyurethane foam production, and qualifies as an 'other' cyclane under this tariff item.
2902.19.00Decalin (Decahydronaphthalene)
Decalin, or decahydronaphthalene (C10H18), is a bicyclic cycloalkane used as a solvent in paint removers and as a reference standard in fuel testing. It is a saturated cyclic hydrocarbon, classified as an 'other' cyclane under this tariff item.
2902.19.00Ethylcyclohexane
Ethylcyclohexane (C8H16) is an alkyl-substituted cycloalkane, a saturated cyclic hydrocarbon. It is used in organic synthesis and as a high-purity solvent in research, and falls under this tariff item as an 'other' cyclane.
2902.19.00Methylcyclohexane
Methylcyclohexane (C7H14) is a cycloalkane with a methyl substituent, a saturated cyclic hydrocarbon. It is used as a solvent in rubber production and chromatography, and is classified as an 'other' cyclane under this tariff item.
2902.19.00Norborane (Bicyclo[2.2.1]heptane)
Norbornane, also known as bicyclo[2.2.1]heptane, is a bicyclic cycloalkane used in specialty polymer production and pharmaceutical intermediates. It is a saturated cyclic hydrocarbon, classified as an 'other' cyclane under this tariff item.
2902.19.00Norbornane
Norbornane is a bridged cyclic hydrocarbon (C7H12) classified as a cyclane due to its saturated bicyclic structure with no aromatic characteristics. It serves as a key intermediate in organic synthesis, and falls under this tariff item as an 'other' cyclane.
2902.19.00Perhydroindane
Perhydroindane is a fully saturated bicyclic hydrocarbon (decahydro-1H-indene) used in high-performance lubricant formulations. It is a fused ring cyclane, classified as an 'other' cyclane under this tariff item.
2902.19.00Spiropentane
Spiropentane (C5H8) features two fused cyclopropane rings at a single carbon atom, making it a unique cyclane. It is primarily used in advanced organic chemistry research, and is classified as an 'other' cyclane under this tariff item.
2902.20.00ACS Reagent Benzene
ACS Reagent Benzene is a high-purity cyclic hydrocarbon meeting American Chemical Society specifications for laboratory analysis. It is a separate chemically defined organic compound (C6H6) with controlled impurity limits, qualifying under tariff item 2902.20.00.
2902.20.00Anhydrous Benzene
Anhydrous Benzene is benzene with water content below 20 ppm, used in moisture-sensitive chemical reactions. As a separate chemically defined organic compound, it falls under tariff item 2902.20.00, with the low water content not affecting classification.
2902.20.00Cumene Process Benzene
Cumene Process Benzene is high-purity benzene used as a feedstock for cumene production via Friedel-Crafts alkylation. It is a separate chemically defined compound (C6H6) and is classified under tariff item 2902.20.00 as a cyclic hydrocarbon.
2902.20.00Cyclohexane Feed Benzene
Cyclohexane Feed Benzene is purified benzene for catalytic hydrogenation to cyclohexane, with low sulfur content to protect catalysts. It is a separate chemically defined organic compound and falls under tariff item 2902.20.00.
2902.20.00Industrial Grade Benzene
Industrial Grade Benzene is pure benzene (C6H6), a colorless liquid cyclic hydrocarbon used as a solvent and intermediate in manufacturing styrene, phenol, and other aromatics. It is a separate chemically defined compound, classified under tariff item 2902.20.00.
2902.20.00Laboratory Analysis Benzene
Laboratory Analysis Benzene is HPLC-grade benzene for chromatographic and spectroscopic analysis, with a UV cutoff below 270 nm. As a separate chemically defined compound, it is classified under tariff item 2902.20.00.
2902.20.00Nitration Grade Benzene
Nitration Grade Benzene is high-purity benzene (>99.99%) for nitrobenzene production via nitration, essential for dyes and pharmaceuticals. It is a separate chemically defined compound, classified under tariff item 2902.20.00.
2902.20.00Polymerization Grade Benzene
Polymerization Grade Benzene is ultra-high purity benzene for polystyrene and cumene production, meeting stringent non-staining requirements. It is a separate chemically defined compound and falls under tariff item 2902.20.00.
2902.20.00Styrene Monomer Feedstock Benzene
Styrene Monomer Feedstock Benzene is pipeline-specification benzene for ethylbenzene/styrene monomer production, meeting non-coloring specs for clear polystyrene. It is a separate chemically defined compound, classified under tariff item 2902.20.00.
2902.20.00Thiophene-Free Benzene
Thiophene-Free Benzene is purified benzene with thiophene content below 0.2 ppm, used in pharmaceutical intermediate production. It is a separate chemically defined compound and falls under tariff item 2902.20.00.
2902.30.00ACS Reagent Toluene
ACS Reagent Toluene is a high-purity aromatic hydrocarbon (C6H5CH3) meeting stringent American Chemical Society specifications for laboratory use. It is a separate chemically defined organic compound, qualifying under tariff item 2902.30.00 as toluene, and is used in analytical chemistry, extractions, and chromatography.
2902.30.00Industrial Grade Toluene
Industrial Grade Toluene is a colorless liquid aromatic hydrocarbon used as a solvent in paints, coatings, and adhesives. As a separate chemically defined compound, it is classified under tariff item 2902.30.00, regardless of its industrial application.
2902.30.00Nitration Grade Toluene
Nitration Grade Toluene is a high-purity form of toluene refined for nitration reactions to produce explosives or pharmaceuticals. It remains a separate chemically defined organic compound, classified under tariff item 2902.30.00, with strict impurity limits for controlled processes.
2902.30.00Paint Thinner Toluene
Paint Thinner Toluene is technical-grade toluene packaged for use as a paint thinner or surface cleaner. It is classified under tariff item 2902.30.00 as toluene, provided it contains only minimal stabilizers for safety, per chapter note 1(f).
2902.30.00Pharmaceutical Grade Toluene
Pharmaceutical Grade Toluene is ultra-high purity toluene (USP/EP grade) used as an extraction solvent in drug manufacturing. It is a separate chemically defined organic compound, classified under tariff item 2902.30.00, with strict control of residual solvents.
2902.30.00Toluene with Stabilizer
Toluene with Stabilizer is toluene containing a polymerization inhibitor like BHT for safe transport. Per chapter note 1(f), such stabilizers necessary for preservation do not remove the product from tariff item 2902.30.00, as long as they do not make it suitable for a specific use.
2902.41.00Electronic Grade o-Xylene for Photoresist
Ultra-high purity o-xylene (99.99%) used as a solvent in photoresist formulations for semiconductor manufacturing. It is a separate chemically defined cyclic hydrocarbon, meeting the purity standards of Chapter 29, and is not put up for retail sale, ensuring classification under this tariff item.
2902.41.00Industrial Grade o-Xylene 99.5% Purity
Industrial grade o-xylene with 99.5% purity, primarily used as a feedstock for phthalic anhydride production via catalytic oxidation. As a separate chemically defined cyclic hydrocarbon, it qualifies under Chapter 29 and is not excluded by any legal note.
2902.41.00o-Xylene for Pesticide Intermediate
Refined o-xylene used as a precursor for o-xylenol in pesticide synthesis. It is a separate chemically defined cyclic hydrocarbon, and its use as an intermediate does not affect classification under this tariff item, as it is not put up for retail sale or formulated.
2902.41.00o-Xylene (Ortho-Xylene)
o-Xylene (ortho-xylene) is a colorless, flammable liquid aromatic hydrocarbon with the formula C6H4(CH3)2, used as a solvent and chemical intermediate. It is a separate chemically defined compound, meeting Chapter 29 note 1(a), and is not excluded by any legal note.
2902.41.00o-Xylene Rubber Processing Solvent
o-Xylene used as a swelling agent and solvent in synthetic rubber processing, such as tire manufacturing. It is a separate chemically defined cyclic hydrocarbon, and its application as a solvent does not exclude it from Chapter 29, provided it is not formulated with other substances.
2902.41.00o-Xylene Solvent for Paint Manufacturing
Technical grade o-xylene used as a solvent in alkyd resin paints and coatings. It is a separate chemically defined compound, and despite its solvent application, it is not excluded from Chapter 29 unless it is put up for retail sale or formulated with other ingredients.
2902.41.00Phthalic Anhydride Feedstock o-Xylene
o-Xylene specifically refined for oxidation to phthalic anhydride in plasticizer manufacturing. It is a pure cyclic hydrocarbon, meeting Chapter 29 note 1(a), and is not excluded by any legal note, as it is not put up for retail sale or formulated.
2902.42.0099% Pure m-Xylene Industrial Grade
High-purity m-xylene (99%) used as a solvent in paints, coatings, and resins. It is a separate chemically defined organic compound, specifically the meta isomer of dimethylbenzene, meeting the scope of Chapter 29 note 1(a).
2902.42.00Distilled m-Xylene for Adhesives
Vacuum-distilled m-xylene used for dissolving polystyrene in adhesive formulations. It is a chemically defined cyclic hydrocarbon, distinct from crude petroleum fractions, and qualifies under Chapter 29 note 1(a).
2902.42.00m-Xylene Chemical Intermediate 98% Purity
m-Xylene at 98% purity used as a chemical intermediate for phthalic anhydride and isophthalic acid synthesis. It is a separate chemically defined organic compound, with minor impurities not affecting its classification under Chapter 29 note 1(a).
2902.42.00m-Xylene (Meta-Xylene)
m-Xylene (meta-xylene) is a colorless, flammable liquid cyclic hydrocarbon with the formula C6H4(CH3)2, specifically the meta isomer of dimethylbenzene. It is a separate chemically defined organic compound under Chapter 29 note 1(a).
2902.42.00m-Xylene Solvent for Paint Manufacturing
Technical grade m-xylene packaged for use as a solvent in alkyd paint and varnish production. It is a chemically defined cyclic hydrocarbon without disqualifying additives, meeting Chapter 29 note 1(a) and (g) if colouring or odour agents are added for identification.
2902.43.0099.9% Pure p-Xylene
High-purity p-Xylene (99.9%) is a separate chemically defined organic compound, specifically the para isomer of xylene. It is used primarily as a feedstock for producing purified terephthalic acid (PTA), which is a precursor for polyester manufacturing. This product falls under tariff item 2902.43.00 as p-Xylene, a cyclic hydrocarbon.
2902.43.00Industrial Grade p-Xylene
Industrial grade p-Xylene is a chemically defined organic compound with minimal impurities, typically less than 0.5%. It is used in chemical synthesis and polymer manufacturing, serving as a key intermediate for producing terephthalic acid and other industrial chemicals. This product is classified under tariff item 2902.43.00 as p-Xylene.
2902.43.00Polymer-Grade p-Xylene
Polymer-grade p-Xylene is an ultra-high purity form of the chemical, exceeding 99.95% purity, specifically refined for terephthalic acid production used in polyester fiber manufacturing. It meets ASTM D841 specifications and is a separate chemically defined organic compound. This product falls under tariff item 2902.43.00 as p-Xylene.
2902.43.00p-Xylene (Para-Xylene)
p-Xylene (para-xylene) is a colorless, flammable liquid aromatic hydrocarbon with the chemical formula C6H4(CH3)2. It is a specific xylene isomer used primarily as a feedstock for producing terephthalic acid, which is then used in polyester and PET plastic production. This product is classified under tariff item 2902.43.00 as p-Xylene.
2902.43.00p-Xylene with Stabilizer
p-Xylene with stabilizer contains a small amount of polymerization inhibitor, such as 10 ppm t-butylcatechol, added for safe transport. This addition is permitted under Chapter 29 note (f) as a stabilizer necessary for preservation or transport, and the product remains classified as the base compound. It falls under tariff item 2902.43.00 as p-Xylene.
2902.44.00Commercial Mixed Xylenes (Solvent Grade)
Commercial mixed xylenes in solvent grade, meeting ASTM D235 specifications, are a blend of ortho-, meta-, and para-xylene isomers. They are used for industrial cleaning and extraction, and qualify under tariff item 2902.44.00 as mixed xylene isomers, distinct from single-isomer products.
2902.44.00Industrial Grade Mixed Xylene Isomers
Industrial grade mixed xylene isomers, derived from petroleum refining, consist of ortho, meta, and para isomers. Used as a solvent in paints, coatings, and adhesives, this mixture falls under tariff item 2902.44.00 as mixed xylene isomers.
2902.44.00Mixed Xylene Solvent for Paint Thinners
High-purity mixed xylene isomers (95%+ total xylenes) packaged for paint thinners and varnishes. This product is a mixture of xylene isomers, qualifying under tariff item 2902.44.00 as mixed xylene isomers, and is not a single-isomer product.
2902.44.00Technical Grade Mixed Xylenes (C8 Aromatics)
Technical grade mixed xylenes (C8 aromatics) with typical composition of 20-25% ortho, 50% meta, and 25% para isomers. Used in printing ink manufacturing and as a resin diluent, this mixture falls under tariff item 2902.44.00 as mixed xylene isomers.
2902.44.00Xylene Isomer Mix for Resin Dilution
Commercial grade mixed xylenes used to adjust viscosity in alkyd resin production. This inseparable mixture of xylene isomers is chemically defined per Chapter 29 note (a) and falls under tariff item 2902.44.00 as mixed xylene isomers.