Chapter 2926 — Customs Tariff Headings

2926.20.001-Cyanoguanidine (dicyandiamide)

2926.30.00Fenproporex (INN) and its salts; methadone (INN) intermediate (4-cyano-2-dimethylamino-4,4-diphenylbutane)

2926.40.00alpha-Phenylacetoacetonitrile

2926.90.00Other

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Products classified under Tariff item 29.26

Acrylonitrile for Adiponitrile Production

Acrylonitrile refined specifically for hydrocyanation to adiponitrile, a precursor in nylon-6,6 production. This pure nitrile-function compound meets the definition of a separate chemically defined organic compound under Chapter 29, regardless of its intended end-use in the synthetic fiber chain.

Acrylonitrile Monomer

Pure acrylonitrile monomer (CH2=CHCN), a colorless liquid unsaturated nitrile-function compound used primarily as a chemical intermediate. It is a separate chemically defined organic compound, qualifying under Chapter 29 for tariff item 2926.10.00.

Acrylonitrile Technical Grade

Commercial technical grade acrylonitrile with 98-99% purity, containing minimal water and aldehydes. This separate chemically defined compound is used for bulk plastics manufacturing such as SAN copolymers, and falls under tariff item 2926.10.00.

Acrylonitrile with Anti-Dusting Agent

Liquid acrylonitrile with a trace odoriferous substance added for spill identification, as permitted by Chapter 29 note 1(g). The addition facilitates safety without making the product suitable for a specific use, so it remains under tariff item 2926.10.00.

Bulk Acrylonitrile ISO Tank

Bulk acrylonitrile shipped in 20MT ISO tanks with nitrogen padding, a standard transport form for this chemically defined compound. It is classified under tariff item 2926.10.00 for large-scale resin production, as the nitrogen padding is a safety measure.

Distilled Acrylonitrile 99.5%

Vacuum-distilled acrylonitrile with 99.5% purity and controlled aldehyde content below 20 ppm. This pure nitrile-function compound is used for high-performance ABS and modacrylic fiber manufacture, falling under tariff item 2926.10.00.

High Purity Acrylonitrile 99.9%

Ultra-pure acrylonitrile with 99.9% purity and less than 10 ppm impurities, meeting polymerization specifications. This chemically defined nitrile-function compound is classified under tariff item 2926.10.00 for specialty acrylic fiber production.

MEHQ Inhibited Acrylonitrile

Acrylonitrile inhibited with 4-methoxyphenol (MEHQ) at 30-50 ppm for extended shelf life. Chapter 29 note 1(f) permits this stabilizer addition, maintaining classification under tariff item 2926.10.00 for transport to polymer plants.

Polymerization-Grade Acrylonitrile

Low-residue acrylonitrile with less than 50 ppb hydrocyanic acid, designed for direct emulsion or solution polymerization. It meets the Chapter 29 definition of a separate chemically defined compound, thus classified under tariff item 2926.10.00 for acrylic fiber and paint production.

Stabilized Acrylonitrile

Acrylonitrile with added stabilizers like hydroquinone to prevent polymerization during storage and transport. Classified under tariff item 2926.10.00 per Chapter 29 note 1(f), as the stabilizer is necessary for preservation without rendering the product specific-use.

Dicyandiamide (1-Cyanoguanamide)

Dicyandiamide, also known as 1-cyanoguanidine, is a white crystalline powder classified as a nitrile-function compound due to its cyano group (-C≡N) attached to the guanidine structure. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a). It falls under tariff item 2926.20.00 as the sole item for this subheading.

Dicyandiamide Curing Agent DCDA

DCDA (dicyandiamide) curing agent is a latent hardener for thermoset polymers like epoxies, falling under tariff item 2926.20.00 as a pure nitrile-function compound per Chapter 29 definitions. Even when formulated for use as a curing agent, it remains classifiable here if it is not put up in measured doses or for retail sale as a product of another heading.

High-Purity Dicyandiamide 99.9%

High-purity 99.9% dicyandiamide is a specialty chemical for flame-retardant formulations, under tariff item 2926.20.00 as a nitrile-function organic compound. Its classification follows Chapter 29 Note 1(a) without impurities affecting its identity as a separate chemically defined compound.

Industrial Grade Dicyandiamide Powder

Industrial grade dicyandiamide is a high-purity (99.5%) white powder used as a curing agent for epoxy resins, classified under tariff item 2926.20.00 for its nitrile-function structure. It meets Chapter 29 Note 1(a) as a separate chemically defined organic compound, even with minor impurities.

Pharma Grade 1-Cyanoguanidine

Pharmaceutical grade 1-cyanoguanidine (USP/EP compliant) is a nitrile-function compound under tariff item 2926.20.00, used as an intermediate in synthesizing antiviral and antidiabetic drugs. Its classification adheres to Chapter 29 Note 1(a) as a separate chemically defined compound, regardless of its pharmaceutical grade.

Technical Dicyandiamide Flakes

Technical grade dicyandiamide in flake form is used in water treatment as a precipitant, classified under tariff item 2926.20.00 for its 1-cyanoguanidine chemical structure. It qualifies under Chapter 29 Note 1(f) if minor anti-caking agents are added for preservation or transport, provided they do not make it suitable for a specific use.

4-Cyano-2-dimethylamino-4,4-diphenylbutane

4-Cyano-2-dimethylamino-4,4-diphenylbutane is a specific nitrile-function organic compound explicitly named in tariff item 2926.30.00 as methadone (INN) intermediate. It is used primarily as an intermediate in the synthesis of methadone, a pharmaceutical opioid. This compound is classified directly under this tariff item.

4-Cyano-2-dimethylamino-4,4-diphenylbutane Hydrochloride

The hydrochloride salt of 4-cyano-2-dimethylamino-4,4-diphenylbutane is a chemically defined salt of the methadone intermediate. Tariff item 2926.30.00 covers the methadone intermediate and its salts, making this hydrochloride salt classifiable under this item. It is classified as a salt of the named compound.

Fenproporex Acetate

Fenproporex acetate is the acetic acid salt of fenproporex (INN), a nitrile-function organic compound. As a salt of a named INN compound, it is classified under tariff item 2926.30.00, which covers fenproporex and its salts. This form is used as a volatile analytical standard in toxicology laboratories.

Fenproporex Base Powder

Pure fenproporex base is the free amine form of this INN nitrile compound, explicitly named in tariff item 2926.30.00. As a separate chemically defined organic compound with a nitrile function, it falls directly under this item. It is used in research and analytical applications.

Fenproporex Citrate

Fenproporex citrate is a stable salt formed between fenproporex (INN) and citric acid. Tariff item 2926.30.00 covers fenproporex and its salts, making this citrate salt classifiable under this item. It is used in analytical standards for doping control testing.

Fenproporex Free Base Analytical Grade

Analytical grade fenproporex base with purity above 99.5% is the INN compound itself, explicitly covered by tariff item 2926.30.00. This high-purity form is essential for synthesis of radiolabeled tracers in PET imaging research. It is packaged under nitrogen to prevent oxidation.

Fenproporex Hydrochloride

Fenproporex hydrochloride is the salt form of fenproporex, a chemically defined nitrile-function organic compound. Tariff item 2926.30.00 explicitly covers fenproporex and its salts, making this hydrochloride salt classifiable under this item. It was historically used as an appetite suppressant.

Fenproporex Mesylate

Fenproporex mesylate, or methanesulfonate salt, is a salt of fenproporex (INN) and is covered by tariff item 2926.30.00. This form is commonly used in forensic reference standards due to its high purity. The mesylate counterion provides distinct handling properties.

Fenproporex Phosphate

Fenproporex phosphate is a phosphate salt of fenproporex, a chemically defined derivative captured by tariff item 2926.30.00. This salt form is suitable for pharmaceutical intermediate synthesis. Its nitrile group defines the classification within Chapter 29.

Fenproporex Precursor Base (4-Cyano-2-Dimethylamino-4,4-Diphenylbutane)

4-Cyano-2-dimethylamino-4,4-diphenylbutane serves a dual role as a precursor for both fenproporex and methadone production. Tariff item 2926.30.00 explicitly names this compound as the methadone intermediate, covering it directly. It is classified under this item due to its explicit chemical identification.

Fenproporex Sulfate Salt

Fenproporex sulfate is an acidic salt derivative of fenproporex (INN), a nitrile-function compound explicitly listed in tariff item 2926.30.00. This form enhances stability for laboratory synthesis of anorectic agents. It is classified as a salt of the named INN compound.

Fenproporex Tartrate

Fenproporex tartrate is the tartrate salt of fenproporex (INN), qualifying under tariff item 2926.30.00 for its status as an INN salt with nitrile function. This chiral salt form aids in resolution during synthesis. It is imported as GMP-grade material for veterinary applications.

High-Purity Fenproporex HCl Reference Standard

High-purity fenproporex HCl reference standard is a certified reference material of fenproporex hydrochloride at 99.9% purity. As a salt of fenproporex (INN), it falls under tariff item 2926.30.00. It is used for calibration in anti-doping and forensic analysis and comes with ISO 17034 accreditation.

Methadone Intermediate (4-Cyano-2-Dimethylamino-4,4-Diphenylbutane) Powder

High-purity powdered 4-cyano-2-dimethylamino-4,4-diphenylbutane is a nitrile-function compound serving as the key intermediate for methadone synthesis. Tariff item 2926.30.00 explicitly covers this compound as the methadone intermediate. It is classified under this item due to its chemical structure and named status.

alpha-Phenylacetoacetonitrile (P2P Nitrile)

Alpha-Phenylacetoacetonitrile (P2P Nitrile) is a separate chemically defined organic compound with a nitrile functional group (-CN) attached to the alpha carbon of the phenylacetoacetone structure. It is specifically named in tariff item 2926.40.00 and meets Chapter 29 note 1(a) as a chemically defined compound.

alpha-Phenylacetoacetonitrile Technical Grade 98%

Technical grade alpha-Phenylacetoacetonitrile at 98% purity is a key nitrile-function organic compound used in organic synthesis. It is classified under this tariff item as the named compound, with impurities not affecting its chemical identity per Chapter 29 note 1(a).

alpha-Phenylacetoacetonitrile with Anti-Caking Agent

Alpha-Phenylacetoacetonitrile with an anti-caking agent added for preservation or transport. This form is permitted under Chapter 29 note 1(f), as the additive does not alter the product's general use, and it remains classified as the named nitrile-function compound.

alpha-Phenylacetoacetonitrile with Identification Dye

Alpha-Phenylacetoacetonitrile with a trace odoriferous substance added for safety identification, as allowed under Chapter 29 note 1(g). The addition facilitates spill detection without making the product suitable for a specific use, so it remains under this tariff item.

High-Purity alpha-Phenylacetoacetonitrile 99%+

High-purity (99%+) alpha-Phenylacetoacetonitrile is a synthetic intermediate with the precise structure qualifying it under this tariff item. As a separate chemically defined nitrile-function compound, it aligns with Chapter 29 note 1(a) and is the named product.

Industrial alpha-Phenylacetoacetonitrile 25kg Drums

Industrial-grade alpha-Phenylacetoacetonitrile in 25kg drums for manufacturing scale is classified under this tariff item as the named nitrile-function organic compound. It is used in large-scale synthesis and meets Chapter 29 note 1(a) as a chemically defined compound.

P2P Nitrile alpha-Phenylacetoacetonitrile USP Grade

USP-grade alpha-Phenylacetoacetonitrile meets pharmacopeia standards for use in pharmaceutical intermediates. It is explicitly covered by this tariff item as a named nitrile-function compound in Chapter 29, with high purity suitable for API synthesis.

Pharma-Intermediate alpha-Phenylacetoacetonitrile

Dedicated pharmaceutical intermediate grade alpha-Phenylacetoacetonitrile under this tariff item meets Chapter 29 as a chemically defined nitrile-function compound for API synthesis. Its low impurity profile ensures regulatory compliance for pharmaceutical use.

Research-Grade alpha-Phenylacetoacetonitrile 500g

Research-grade alpha-Phenylacetoacetonitrile packaged in 500g quantities for laboratory research is a pure nitrile-function compound under this tariff item. Its chemical definition fits Chapter 29 heading precisely, even in small quantities, as a named compound.

Stabilized alpha-Phenylacetoacetonitrile Solution 20% in Ethanol

A 20% solution of alpha-Phenylacetoacetonitrile in ethanol for safe transport is permitted under Chapter 29 note 1(e). The solvent is solely for safety reasons and does not render the product suitable for a specific use, so it remains classified under this tariff item.

2-Amino-4-chlorobenzonitrile

2-Amino-4-chlorobenzonitrile is a separate chemically defined aromatic compound with amino and nitrile functions, plus a chlorine substituent. It is not specifically named in other tariff items of subheading 2926.90, so it falls under the 'other' item 2926.90.00.

2-Amino-5-chlorobenzonitrile

2-Amino-5-chlorobenzonitrile is a separate chemically defined aromatic nitrile compound with amino and chloro substituents. It is not specifically enumerated in other tariff items of subheading 2926.90, so it is classifiable under the residual item 2926.90.00.

2-Cyano-4-nitroaniline

2-Cyano-4-nitroaniline is a separate chemically defined aromatic compound containing a nitrile (cyano) group and a nitro substituent on a benzene ring. It falls under tariff item 2926.90.00 as an 'other' nitrile-function compound, not specifically enumerated elsewhere in the subheading.

2-Cyano-4-nitroaniline Flake Form

Flake-form 2-cyano-4-nitroaniline is the same chemically defined aromatic nitrile compound, with physical form not affecting classification under Chapter 29. It is used in pigment dye synthesis and qualifies as an 'other' nitrile-function compound under tariff item 2926.90.00.

2-Cyano-4-nitroaniline Technical Grade

Technical grade 2-cyano-4-nitroaniline contains minor impurities but remains a separate chemically defined aromatic nitrile compound under Chapter 29 note 1(a). It is used in industrial dye manufacturing and falls under tariff item 2926.90.00 as an 'other' nitrile.

2-Cyano-4-nitroaniline with Stabilizer

2-Cyano-4-nitroaniline with a stabilizer (anti-caking agent) for transport is permitted under Chapter 29 note 1(f), as the stabilizer is necessary for preservation. The core compound remains a nitrile-function aromatic, classifiable under tariff item 2926.90.00.

4-Amino-2-chlorobenzonitrile

4-Amino-2-chlorobenzonitrile is a separate chemically defined aromatic compound with nitrile, amino, and chloro functions. It is not specifically named in other tariff items of subheading 2926.90, so it falls under the 'other' item 2926.90.00.

(Cyanoethyl)(hydroxyethyl)-m-toluidine

(Cyanoethyl)(hydroxyethyl)-m-toluidine is a separate chemically defined aromatic compound with nitrile, alcohol, and toluidine functionalities. It is not specifically named in other tariff items of subheading 2926.90, so it is classifiable under the residual item 2926.90.00.

Dye Intermediate 2-Cyano-4-nitroaniline

2-Cyano-4-nitroaniline used as a dye intermediate is the same chemically defined aromatic nitrile compound. It is not excluded by Chapter 29 note 2(g) unless put up in retail forms for dyeing, which is not the case here. Classifiable under tariff item 2926.90.00.

High Purity 2-Cyano-4-nitroaniline

High purity 2-cyano-4-nitroaniline (>99%) is a separate chemically defined aromatic nitrile compound, used as a pharmaceutical intermediate. It falls under tariff item 2926.90.00 as an 'other' nitrile-function compound, not specifically named elsewhere.