Chapter 2932 — Customs Tariff Headings

Anhydrous Tetrahydrofuran (THF) Stabilized with BHT

Anhydrous tetrahydrofuran (THF) stabilized with butylated hydroxytoluene (BHT) to prevent peroxide formation during storage and transport. The stabilizer is added solely for safety and preservation, which is permitted under Chapter 29 Note 1(f) without altering the classification of the base compound.

Industrial Grade Tetrahydrofuran (THF) 99.5% Purity

Industrial-grade tetrahydrofuran (THF) with 99.5% purity, used as a precursor in the production of polytetramethylene ether glycol (PTMEG) for spandex and other elastomers. It is a chemically defined heterocyclic compound with an unfused hydrogenated furan ring, falling squarely under tariff item 2932.11.00.

Peroxide-Free Tetrahydrofuran with Antioxidant

Peroxide-free tetrahydrofuran treated with antioxidants to ensure safe long-term storage, particularly for sensitive applications like battery electrolytes. The added antioxidants are stabilizers necessary for preservation, explicitly allowed under Chapter 29 Note 1(f), keeping the product in tariff item 2932.11.00.

Technical Grade Tetrahydrofuran for Adhesives

Technical-grade tetrahydrofuran (99% purity) formulated for use in PVC pipe cement and adhesive manufacturing, where it acts as a solvent to dissolve PVC resins. As a chemically defined heterocyclic compound with an unfused hydrogenated furan ring, it is classified under tariff item 2932.11.00.

Tetrahydrofuran Bulk Drum for PTMEG Production

Bulk tetrahydrofuran supplied in 200-litre drums, specifically for polymerization to PTMEG used in elastomers such as Lycra. This high-purity THF is a chemically defined compound with an unfused hydrogenated furan ring, meeting the criteria for tariff item 2932.11.00.

Tetrahydrofuran NMR Grade Spectroscopic Solvent

NMR-grade tetrahydrofuran with 99.96% purity, including deuterated options for spectroscopic analysis. The high purity and absence of stabilizers in some variants keep it within the definition of a chemically defined compound under Chapter 29, classifiable under tariff item 2932.11.00.

Tetrahydrofuran Solvent for HPLC Grade Analysis

HPLC-grade tetrahydrofuran with ultra-high purity (99.9%+) and low water and residue content, designed for chromatography applications. As a pure chemically defined heterocyclic compound with a hydrogenated furan ring, it falls under tariff item 2932.11.00.

Tetrahydrofuran (THF) 99.9% Pure ACS Reagent Grade

Tetrahydrofuran (THF) with 99.9% purity, ACS reagent grade, used as a versatile solvent in chemical synthesis and analysis. It is a colorless, volatile liquid heterocyclic compound with a saturated five-membered furan ring containing one oxygen hetero-atom, classified under tariff item 2932.11.00.

Bio-Based Furfuraldehyde

Bio-based 2-furaldehyde derived from agricultural corncob waste, used as a green chemical intermediate for producing furan polymers. It is a separate chemically defined organic compound with an unfused furan ring and an aldehyde group, meeting the criteria of Chapter 29 Note 1(a). The bio-origin does not affect classification under this tariff item.

Furfuraldehyde Bulk Tanker Grade

Technical-grade 2-furaldehyde at 98% minimum purity, transported in bulk for manufacturing furan resins and foundry binders. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, classifiable under Chapter 29 Note 1(a). Bulk transport does not alter its classification.

Furfuraldehyde Technical Grade 98%

Standard technical 2-furaldehyde at 98% purity, used as a general solvent and extractant in petroleum refining. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, meeting Chapter 29 Note 1(a). Its use as a solvent does not affect classification.

Furfural for Agrochemical Intermediates

Purified 2-furaldehyde used as a precursor for furan-based pesticides and herbicides. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, classifiable under Chapter 29 Note 1(a). Its intended use in agrochemicals does not change its classification.

Furfural Pharmaceutical Grade

High-purity 2-furaldehyde meeting USP standards, used in synthesizing pharmaceutical intermediates like nitrofurantoin. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, meeting Chapter 29 Note 1(a). Pharmaceutical grade does not affect classification.

Furfural with Stabilizer for Export

Stabilized 2-furaldehyde containing BHT antioxidant for safe transport, still qualifying as a pure compound. Under Chapter 29 Note 1(f), added stabilizers necessary for preservation or transport do not affect classification. It is a separate chemically defined organic compound with an unfused furan ring.

High-Purity Furfural for Furan Synthesis

Ultra-pure 2-furaldehyde at >99.5% purity, used for hydrogenation into tetrahydrofuran solvent production. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, meeting Chapter 29 Note 1(a). High purity does not affect classification.

Industrial Grade Furfuraldehyde 99%

Industrial-grade 2-furaldehyde at 99% purity, used as a chemical intermediate in resin and solvent production. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, classifiable under Chapter 29 Note 1(a). The industrial grade does not affect classification.

Laboratory Reagent Furfuraldehyde

ACS-grade 2-furaldehyde bottled for analytical chemistry and organic synthesis in laboratories. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, meeting Chapter 29 Note 1(a). Laboratory grade does not affect classification.

Refined Furfural for Resin Production

Distilled 2-furaldehyde specifically for synthesizing furfuryl alcohol and phenolic resins in composites. It is a separate chemically defined organic compound with an unfused furan ring and aldehyde group, meeting Chapter 29 Note 1(a). The distillation process does not affect classification.

Bio-Based Furfuryl Alcohol 99.5% for Resins

Bio-based furfuryl alcohol at 99.5% purity, derived from agricultural waste and certified as 100% biobased content. This heterocyclic compound contains an unfused furan ring with a hydroxymethyl group, qualifying it under tariff item 2932.13.00 as furfuryl alcohol. The high purity and sustainability documentation support its classification as a separate chemically defined organic compound.

Furfuryl Alcohol 98% Technical Grade

Technical-grade furfuryl alcohol at 98% purity, produced from furfural derived from agricultural byproducts like corncobs. This heterocyclic compound contains an unfused furan ring with a hydroxymethyl group, meeting the description of furfuryl alcohol under tariff item 2932.13.00. The technical grade is suitable for industrial applications such as resin production.

Furfuryl Alcohol Flake Inhibited for Composites

Furfuryl alcohol supplied in flake-inhibited form to prevent low-temperature polymerization during storage and transport. The added anti-polymerization agent qualifies as a stabilizer under Chapter Note 1(f) of Chapter 29, which permits stabilizers necessary for preservation or transport. The product remains classified as furfuryl alcohol under tariff item 2932.13.00.

Industrial Furfuryl Alcohol for Furan Resin Production

Industrial-grade furfuryl alcohol specifically stabilized for foundry resin manufacturing, containing less than 1% polymerization inhibitor. The stabilizer addition is permitted under Chapter Note 1(f) of Chapter 29 as necessary for preservation or transport. This product meets the description of furfuryl alcohol under tariff item 2932.13.00.

Pharma-Grade Furfuryl Alcohol Stabilized

High-purity furfuryl alcohol with pharmaceutical-grade stabilizer for synthesis of active intermediates. The stabilizer addition is permitted under Chapter Note 1(f) of Chapter 29, provided it is necessary for preservation or transport and does not make the product suitable for a specific use. This product qualifies as furfuryl alcohol under tariff item 2932.13.00.

Tetrahydrofurfuryl Alcohol 99% USP Grade

Tetrahydrofurfuryl alcohol at 99% USP grade, the fully hydrogenated derivative of furfuryl alcohol with a saturated tetrahydrofuran ring and a pendant alcohol group. This product is explicitly included in tariff item 2932.13.00 as tetrahydrofurfuryl alcohol. The USP grade ensures high purity suitable for pharmaceutical and food-contact applications.

Tetrahydrofurfuryl Alcohol for Battery Electrolytes

Ultra-high purity tetrahydrofurfuryl alcohol for lithium battery electrolyte co-solvents, with water content below 50 ppm. This product is the hydrogenated furan ring alcohol explicitly covered by tariff item 2932.13.00. The high purity and low water content meet the requirements for a separate chemically defined organic compound.

Tetrahydrofurfuryl Alcohol Green Solvent AR Grade

Analytical reagent grade tetrahydrofurfuryl alcohol promoted as a bio-based green solvent alternative to NMP/DMF. This product is the hydrogenated furan ring alcohol explicitly covered by tariff item 2932.13.00. The AR grade ensures high purity suitable for analytical and laboratory applications.

Tetrahydrofurfuryl Alcohol Peroxide-Free Grade

Peroxide-free stabilized tetrahydrofurfuryl alcohol for polymer and coating applications. The peroxide inhibitor is added for safety and preservation, permitted under Chapter Note 1(f) of Chapter 29. This product qualifies as tetrahydrofurfuryl alcohol under tariff item 2932.13.00, provided the stabilizer does not render it suitable for a specific use.

Bulk Sucralose for Beverage Manufacturing

Bulk sucralose for beverage manufacturing is a high-purity, zero-calorie artificial sweetener. It is a chlorinated derivative of sucrose containing an unfused furan ring, classifying it under tariff item 2932.14.00 as a heterocyclic compound with oxygen hetero-atoms.

Food Grade Sucralose Granules

Food grade sucralose granules are free-flowing, high-purity sweetener crystals used in baking and food production. As a chlorinated sucrose derivative with an unfused furan ring, it meets the definition of a heterocyclic compound with oxygen hetero-atoms under tariff item 2932.14.00.

Pharmaceutical Grade Sucralose USP

Pharmaceutical grade sucralose USP is a high-purity sweetener meeting United States Pharmacopeia standards for medicinal use. Its chemical structure, a chlorinated sucrose derivative with an unfused furan ring, places it under tariff item 2932.14.00 as a heterocyclic compound with oxygen hetero-atoms.

Pure Sucralose Powder

Pure sucralose powder is a zero-calorie sweetener used widely in food and beverages. As a chlorinated derivative of sucrose with an unfused furan ring, it is classified under tariff item 2932.14.00 as a heterocyclic compound with oxygen hetero-atoms only.

Sucralose Anhydrous Crystals

Anhydrous sucralose crystals are a stable, pure form of the sweetener used in industrial applications. With an unfused furan ring in its molecular structure, it qualifies as a heterocyclic compound with oxygen hetero-atoms under tariff item 2932.14.00.

Sucralose EP/BP Grade

Sucralose EP/BP grade is a high-purity sweetener meeting European and British Pharmacopoeia standards for pharmaceutical and food supplement use. Its structure, containing an unfused furan ring, classifies it under tariff item 2932.14.00 as a heterocyclic compound with oxygen hetero-atoms.

2,5-Dimethylfuran

2,5-Dimethylfuran is a heterocyclic organic compound featuring an unfused furan ring with methyl groups at positions 2 and 5, containing only oxygen as the hetero-atom. It is used as a solvent, fuel additive, and intermediate in organic synthesis. This product is classified under tariff item 2932.19.00 as an 'other' compound containing an unfused furan ring, per Chapter 29 legal notes.

2,5-Furandicarboxylic Acid

2,5-Furandicarboxylic acid (FDCA) is a bio-based aromatic diacid featuring an unfused furan ring, primarily used as a monomer for producing polyethylene furanoate (PEF), a sustainable alternative to PET. Its structure contains only oxygen hetero-atoms in the ring, qualifying it under this tariff item.

2-Acetylfuran

2-Acetylfuran is an aromatic ketone with an unfused furan ring, used in the food industry for caramel-like flavors. The ketone substituent does not affect the oxygen hetero-atom ring classification, placing it under this tariff item.

2-Furaldehyde Diethyl Acetal

2-Furaldehyde diethyl acetal is a protected form of furfural, retaining the unfused furan ring with oxygen hetero-atoms. It is used in organic synthesis, and its acetal group does not alter the ring classification.

2-Furanmethanol Acetate

2-Furanmethanol acetate is the acetate ester of furfuryl alcohol, maintaining the unfused furan ring with oxygen hetero-atoms. It is used in flavor chemistry and polymer applications, and esters of furan alcohols are classified with the parent alcohol.

2-Furoic Acid

2-Furoic acid is an aromatic carboxylic acid with an unfused furan ring, used in pharmaceuticals and as a preservative. Its ring contains only oxygen hetero-atoms, fitting the description of this tariff item.

2-Methylfuran

2-Methylfuran is a heterocyclic compound with an unfused furan ring substituted by a methyl group at position 2, containing only oxygen as the hetero-atom. It is used as a biofuel component, flavoring agent, and intermediate in chemical synthesis. This product falls under tariff item 2932.19.00 as an 'other' unfused furan compound, consistent with Chapter 29 classification rules.

3-Furoic Acid

3-Furoic acid features a carboxylic acid group at position 3 of the aromatic furan ring, used in pharmaceutical intermediates. The unfused ring with oxygen hetero-atoms only places it under this tariff item.

5-Hydroxymethylfurfural

5-Hydroxymethylfurfural (HMF) is a platform chemical derived from sugar dehydration, featuring an unfused furan ring with aldehyde and alcohol functions. It is used in bio-renewable chemical production, and its oxygen hetero-atoms qualify it for this tariff item.

5-Methylfurfural

5-Methylfurfural is a naturally derived aromatic aldehyde with an unfused furan ring, used in flavorings and fragrances. The methyl substitution does not affect the oxygen hetero-atom ring classification, placing it under this tariff item.

5-Nitro-2-Furaldehyde

5-Nitro-2-furaldehyde contains a nitro group on the aromatic furan ring, used in antimicrobial synthesis. Per Chapter Note 4, nitro groups are not considered nitrogen functions, so the oxygen hetero-atom ring classification remains valid.

Furan-2,5-Dione

Furan-2,5-dione, also known as maleic anhydride's furan analog, contains an aromatic unfused furan ring with anhydride functionality. It is used in specialty polymers, and the oxygen-only ring qualifies it for this tariff item.

Furan-2-Methanol

Furan-2-methanol, also known as furfuryl alcohol, contains an aromatic unfused furan ring with a hydroxymethyl group. It is widely used in resin production and fragrances, and its oxygen-only hetero-atom structure fits this tariff item.

Furfural

Furfural is an aromatic heterocyclic compound with an unfused furan ring, derived from agricultural byproducts like corncobs. It serves as a key intermediate in resins, plastics, and flavorings, and its oxygen hetero-atom ring qualifies it for this tariff item.

Furfuryl Alcohol

Furfuryl alcohol is an organic compound containing an unfused furan ring with a hydroxymethyl substituent, having only oxygen as the hetero-atom. It is widely used in the production of foundry resins, polymers, and as a chemical intermediate. This product is classified under tariff item 2932.19.00 as an 'other' unfused furan compound, per Chapter 29 legal notes.

Furfurylamine

Furfurylamine is an aromatic furan derivative with an amine substituent on the unfused ring, used in polymer synthesis and agrochemicals. The ring contains only oxygen hetero-atoms, and the amine group does not affect the classification under this tariff item.

Methyl 2-Furoate

Methyl 2-furoate is the methyl ester of 2-furoic acid, an aromatic furan compound used in flavors and fragrances. Per Chapter Note 5, esters of acid-function compounds are classified with the parent acid, placing it under this tariff item.

Tetrahydrofuran (THF)

Tetrahydrofuran (THF) is a saturated heterocyclic compound with a five-membered furan ring containing one oxygen hetero-atom, used extensively as a solvent in chemical reactions and polymer manufacturing. It is classified under tariff item 2932.19.00 as an 'other' compound containing an unfused furan ring, whether or not hydrogenated, per Chapter 29 legal notes.

Tetrahydrofurfuryl Alcohol

Tetrahydrofurfuryl alcohol features a hydrogenated unfused furan ring (tetrahydrofuran structure) and is used as a green solvent in coatings and pharmaceuticals. The ring contains only oxygen hetero-atoms, qualifying it for this tariff item.

4-Hydroxycoumarin Powder

4-Hydroxycoumarin is a synthetic aromatic lactone classified as a heterocyclic compound with oxygen hetero-atoms only. It serves as a key intermediate in pharmaceutical synthesis.

4-Hydroxycoumarin USP Grade

USP-grade 4-Hydroxycoumarin meets pharmacopeia standards for research and synthesis. Its aromatic lactone structure qualifies it as a heterocyclic compound with oxygen hetero-atoms only.

4-Hydroxycoumarin with Stabilizer

4-Hydroxycoumarin with stabilizer is a powder containing an anti-caking agent added for transport, as permitted by Chapter 29 Note 1(f). The stabilizer does not render the product suitable for a specific use. As a separate chemically defined organic compound with a lactone ring, it falls under tariff item 2932.20.00.

4-Methylumbelliferone (CAS 90-33-5)

4-Methylumbelliferone is a methylcoumarin derivative with a lactone ring structure, making it a heterocyclic compound with oxygen hetero-atoms only. It is commonly used as a fluorogenic substrate in biochemical assays and as a laser dye.

6-Ethylcoumarin (CAS 17912-17-1)

6-Ethylcoumarin is a substituted coumarin with a lactone ring, classified as a heterocyclic compound with oxygen hetero-atoms only. It is used in fragrance formulations for its strong, long-lasting scent.

6-Hydroxy coumarin (Umbelliferone)

Umbelliferone (6-hydroxycoumarin) is a phenolic derivative of coumarin, a lactone with an aromatic heterocyclic structure. It is used in cosmetics and as a fluorescent indicator. As a chemically defined organic compound with a lactone ring, it is classified under tariff item 2932.20.00.

6-Methylcoumarin (CAS 92-48-8)

6-Methylcoumarin is a methyl derivative of coumarin with a lactone ring, making it a heterocyclic compound with oxygen hetero-atoms only. It is used as a fragrance fixative in perfumes and flavoring agents.