Chapter 2921 — Customs Tariff Headings

2921.2Acyclic polyamines and their derivatives; salts thereof:

2921.30.00Cyclanic, cyclenic or cycloterpenic mono- or polyamines, and their derivatives; salts thereof

2921.4Aromatic monoamines and their derivatives; salts thereof:

2921.5Aromatic polyamines and their derivatives; salts thereof:

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Products classified under Tariff item 29.21

Betaine Hydrochloride (Trimethylglycine HCl)

Betaine hydrochloride, also known as trimethylglycine hydrochloride, is a crystalline compound used primarily as a gastric acidifier and digestive aid in nutritional supplements. It is classified under this tariff item as a salt of trimethylamine, an acyclic monoamine, with the hydrochloride salt form falling within the scope of heading 29.21.

Carnitine Hydrochloride (from Methylamine)

L-Carnitine hydrochloride is a white crystalline powder synthesized from methylamine intermediates, used as a nutritional supplement to support energy metabolism. It is classified here as a salt of an acyclic monoamine derivative, specifically a trimethylamine derivative, with the hydrochloride salt form falling within heading 29.21.

Choline Chloride (from Trimethylamine)

Choline chloride is a quaternary ammonium salt produced from trimethylamine and ethylene oxide, widely used as a feed additive to promote growth in poultry and livestock. It is classified under this tariff item as a salt of trimethylamine, with the chloride salt form falling within the scope of acyclic monoamine salts.

Dimethylamine Anhydrous

Anhydrous dimethylamine is the pure gaseous form of dimethylamine, a simple acyclic monoamine. It is a separate chemically defined organic compound of heading 29.21, and being anhydrous, it contains no added solvent or stabilizer. It is directly classifiable under tariff item 2921.11.00 as dimethylamine.

Dimethylamine Borane Complex

Dimethylamine borane is a coordination compound of dimethylamine and borane, used as a reducing agent in electroless plating and as a catalyst in various chemical reactions. It is classified under this tariff item as a salt of dimethylamine, with the borane complex considered a salt-like derivative of the acyclic monoamine.

Dimethylamine Hydrochloride

Dimethylamine hydrochloride is the salt of dimethylamine, formed by reacting dimethylamine with hydrochloric acid. As a salt of a simple acyclic monoamine, it is classifiable under heading 29.21, and specifically under tariff item 2921.11.00 as a salt of dimethylamine. It is a chemically defined organic compound used as an intermediate in the production of surfactants, rubber accelerators, and herbicides.

Dimethylamine Sulfate

Dimethylamine sulfate is a salt of dimethylamine with sulfuric acid, used in dye intermediates and as a stabilizer. As a salt of a simple acyclic monoamine, it falls under heading 29.21 and specifically under tariff item 2921.11.00 as a salt of dimethylamine. The presence of the sulfate anion does not change the classification, as inorganic salts of organic bases are classified with the organic compound.

Methylamine (40% Aqueous Solution)

Methylamine 40% in water is a standard aqueous solution of methylamine, a simple acyclic monoamine. Under Chapter Note 1(d) of Chapter 29, products of heading 29.21 dissolved in water are classifiable in the chapter. Therefore, this solution falls under tariff item 2921.11.00 as methylamine, provided the water is the only solvent and the solution is a normal method of transport.

Methylamine Stabilized with Ammonia

Methylamine stabilized with ammonia is a solution of methylamine containing ammonia as a stabilizer to prevent corrosion during transport. Under Chapter Note 1(f) of Chapter 29, products of heading 29.21 with an added stabilizer necessary for preservation or transport are classifiable in the chapter. Therefore, this product falls under tariff item 2921.11.00 as methylamine, provided the ammonia does not render it particularly suitable for a specific use.

Methylammonium Chloride

Methylammonium chloride, also known as monomethylamine hydrochloride, is the salt of methylamine with hydrochloric acid. As a salt of a simple acyclic monoamine, it falls under heading 29.21 and specifically under tariff item 2921.11.00 as a salt of methylamine. It is a chemically defined organic compound used in the production of perovskite solar cells and other applications.

Monomethylamine Hydrochloride

Monomethylamine hydrochloride is the salt form of methylamine, a simple acyclic monoamine. It is a chemically defined organic compound used primarily in organic synthesis for pharmaceuticals and agrochemicals. As a salt of methylamine, it falls under tariff item 2921.11.00, consistent with Chapter Note 5(C)(1) which classifies inorganic salts of organic bases with the organic compound.

Tetramethylammonium Chloride

Tetramethylammonium chloride is a quaternary ammonium salt derived from trimethylamine through quaternization with methyl chloride, used as a phase transfer catalyst in organic synthesis. It is classified under this tariff item as a salt of trimethylamine, with the chloride salt form falling within the scope of acyclic monoamine salts.

Trimethylamine 25% in Water

Trimethylamine 25% in water is an aqueous solution of trimethylamine, a simple acyclic monoamine. Under Chapter Note 1(d) of Chapter 29, products of heading 29.21 dissolved in water are classifiable in the chapter. Therefore, this solution falls under tariff item 2921.11.00 as trimethylamine, provided the water is the only solvent and the solution is a normal method of transport.

Trimethylamine Hydrochloride

Trimethylamine hydrochloride is the crystalline salt of trimethylamine, a simple acyclic monoamine. It is a chemically defined organic compound used in choline synthesis for animal feed additives and pharmaceuticals. As a salt of trimethylamine, it falls under tariff item 2921.11.00, consistent with Chapter Note 5(C)(1) which classifies inorganic salts of organic bases with the organic compound.

Trimethylamine N-Oxide Dihydrate

Trimethylamine N-oxide dihydrate is a crystalline compound derived from trimethylamine, used as a protein stabilizer and preservative in biochemical research and seafood processing. It is classified under this tariff item as a derivative of trimethylamine, with the N-oxide form considered a salt-like derivative of the acyclic monoamine.

2-Dimethylaminoethyl Chloroacetate Hydrochloride

2-Dimethylaminoethyl Chloroacetate Hydrochloride is a salt of an acyclic monoamine, specifically a hydrochloride derivative of 2-(N,N-dimethylamino)ethyl chloroacetate. It is a separate chemically defined organic compound that meets the chapter 29 criteria for acyclic monoamines and their salts. As the ester of chloroacetic acid with a dimethylaminoethanol, it falls under tariff item 2921.12.00, which covers 2-(N,N-dimethylamino)ethylchloride hydrochloride and its derivatives.

2-(Dimethylammonio)ethyl Chloride HCl

2-(Dimethylammonio)ethyl Chloride HCl is an IUPAC-named variant of the compound 2-(N,N-dimethylamino)ethylchloride hydrochloride, presenting as an acyclic monoamine hydrochloride salt. Although the name suggests a quaternary ammonium structure, it is classified as the listed derivative under tariff item 2921.12.00. This product is a separate chemically defined organic compound, and it is not excluded by chapter 29 notes as a colouring matter, enzyme, or other excluded product.

2-(N,N-Dimethylamino)ethyl Chloride Hydrochloride

2-(N,N-Dimethylamino)ethyl chloride hydrochloride is a chemically defined acyclic monoamine derivative and its hydrochloride salt, explicitly listed under tariff item 2921.12.00. It features a dimethylaminoethyl group attached to a chloride, stabilized as the hydrochloride salt, and is used as an alkylating agent in organic synthesis. This product meets the chapter's criteria for separate chemically defined organic compounds under Chapter 29.

Dimethylaminoethyl Chloride HCl Pharmaceutical Grade

Dimethylaminoethyl chloride HCl pharmaceutical grade is a high-purity (>98%) version of 2-(N,N-Dimethylamino)ethyl chloride hydrochloride, specifically intended for API synthesis. It is a chemically defined acyclic monoamine hydrochloride salt, meeting the chapter's definition for separate chemically defined organic compounds. Its high purity ensures it is used as an intermediate in producing antihistamines and other pharmaceuticals.

DMEA Chloride Hydrochloride Stabilized

DMEA chloride hydrochloride stabilized is a form of 2-(N,N-Dimethylamino)ethyl chloride hydrochloride with added anti-caking agents for preservation and transport. According to Chapter 29 Note 1(f), products with necessary stabilizers are still classified under the same heading. This stabilized version is used in polymer cross-linking applications and meets the chapter's criteria for acceptable additives.

N,N-Dimethyl-2-chloroethylamine Hydrochloride

N,N-Dimethyl-2-chloroethylamine hydrochloride is a synonymous name for 2-(N,N-Dimethylamino)ethyl chloride hydrochloride, a listed compound under tariff item 2921.12.00. This acyclic monoamine hydrochloride salt is a key alkylating agent in organic synthesis. It is a separate chemically defined organic compound, fitting the chapter's classification criteria.

2-Diethylaminoethyl Chloroacetate Hydrochloride

2-(N,N-Diethylamino)ethylchloride hydrochloride is an acyclic monoamine salt used primarily as an intermediate in organic synthesis, particularly for producing pharmaceutical precursors and other fine chemicals. It is a separate chemically defined organic compound containing a chloroethyl group attached to a diethylamino moiety, with the hydrochloride salt form. This product falls under tariff item 2921.13.00 as it is specifically listed as 2-(N,N-Diethylamino)ethylchloride hydrochloride, an acyclic monoamine derivative and its salt.

2-(N,N-Diethylamino)ethyl Chloride Hydrochloride

2-(N,N-Diethylamino)ethyl chloride hydrochloride is a chemically defined acyclic monoamine salt, specifically named in tariff item 2921.13.00. It is used primarily as an intermediate in organic synthesis, including the production of pharmaceuticals. Its structure and salt form align with Chapter 29's scope for separate chemically defined organic compounds.

Dekachlorn HCl (2-Diethylaminoethyl Chloride HCl)

Commercial-grade 2-(N,N-diethylamino)ethyl chloride hydrochloride, also known as Dekachlorn HCl, is a bulk chemical used in organic synthesis. It matches the exact chemical description of tariff item 2921.13.00 as a named acyclic monoamine salt. The product's identity and use as an intermediate confirm its classification under this tariff item.

Diethylaminoethyl Chloride HCl Pharmaceutical Grade

Pharmaceutical-grade 2-(N,N-diethylamino)ethyl chloride hydrochloride is a high-purity form of the chemical, meeting standards for use in drug synthesis. It is a separate chemically defined organic compound and an acyclic monoamine salt, directly matching tariff item 2921.13.00. Its intended use does not alter its classification under Chapter 29.

N,N-Diethyl-2-Chloroethylamine Hydrochloride

N,N-Diethyl-2-chloroethylamine hydrochloride is a synonym for 2-(N,N-diethylamino)ethyl chloride hydrochloride, an acyclic monoamine salt used as an alkylating agent intermediate. It is a separate chemically defined organic compound, falling directly under tariff item 2921.13.00. The product's chemical structure and salt form comply with Chapter 29's legal notes.

2-Diisopropylaminoethyl Chloride Hydrochloride Powder

2-Diisopropylaminoethyl Chloride Hydrochloride Powder is a crystalline form of the named amine hydrochloride salt, a separate chemically defined organic compound. It is an acyclic monoamine derivative with a chloroethyl chain, classified under tariff item 2921.14.00. The presence of a stabilizer for preservation or transport does not alter its classification.

2-(N,N-Diisopropylamino)ethyl Chloride Hydrochloride

2-(N,N-Diisopropylamino)ethyl Chloride Hydrochloride is the exact compound named in tariff item 2921.14.00. It is an acyclic monoamine derivative with diisopropyl substitution and a chloroethyl chain, presented as a hydrochloride salt. This separate chemically defined organic compound falls squarely within the scope of Chapter 29.

BIS(2-Chloroethyl)Diisopropylammonium Chloride

BIS(2-Chloroethyl)Diisopropylammonium Chloride is a synonym for 2-(N,N-diisopropylamino)ethyl chloride hydrochloride, the compound named in tariff item 2921.14.00. As an acyclic amine salt, it qualifies under Chapter 29 note 5(C) for salts of amine-function compounds. It is a separate chemically defined organic compound.

Diisopropylaminoethyl Chloride HCl (99% Pure)

Diisopropylaminoethyl Chloride HCl (99% Pure) is a high-purity grade of the compound named in tariff item 2921.14.00. It is a separate chemically defined acyclic monoamine salt, meeting the criteria of Chapter 29 notes. The high purity does not affect classification as long as it remains the same compound.

N,N-Diisopropylethylenediamine Dichloride

N,N-Diisopropylethylenediamine Dichloride is an alternative naming for 2-(N,N-diisopropylamino)ethyl chloride hydrochloride, the compound named in tariff item 2921.14.00. It is an acyclic monoamine derivative salt within the scope of Chapter 29. This research chemical is used in alkaloid synthesis and falls under the named tariff item.

2,2'-Dichlorodiethyl-N-ethylamine

2,2'-Dichlorodiethyl-N-ethylamine, also known as bis(2-chloroethyl)ethylamine, is a pure acyclic monoamine derivative with a separate chemically defined structure. It is classified under tariff item 2921.19.00, which covers other acyclic monoamines and their derivatives. This compound is used in organic synthesis as an alkylating agent.

2-Chloro-N,N-dimethyl-ethanaminium Bromide

2-Chloro-N,N-dimethyl-ethanaminium bromide is a bromide protonated salt of N,N-dimethyl-2-chloroethylamine, classified under tariff item 2921.19.00 as an 'other' acyclic monoamine derivative. It is a research chemical used for alkylation studies, meeting Chapter 29 criteria for salts of organic compounds.

3-Amino-3-methyl-1-butyne

3-Amino-3-methyl-1-butyne is a chemically defined acyclic monoamine featuring an amino group attached to a butyne chain with a methyl substituent. It is classified under tariff item 2921.19.00 as an 'other' acyclic monoamine and its derivatives, meeting the criteria of Chapter 29 for separate chemically defined organic compounds.

3-Amino-3-methyl-1-butyne Pharmaceutical Grade

High-purity 3-Amino-3-methyl-1-butyne meeting pharmaceutical standards is a separate chemically defined acyclic monoamine used in the synthesis of antiviral drugs. It falls under tariff item 2921.19.00 as an 'other' acyclic monoamine, with purity not affecting classification as long as it remains a chemically defined compound.

3-Amino-3-methyl-1-butyne Stabilized Solution

A stabilized aqueous solution of 3-Amino-3-methyl-1-butyne is classified under tariff item 2921.19.00 as the solvent is necessary for safe transport of this reactive alkyne-amine. Chapter 29 note 1(d) allows solutions in water for chemically defined organic compounds, provided the solvent does not make the product suitable for a specific use.

Bis(2-chloroethyl)ethylamine Hydrochloride

Bis(2-chloroethyl)ethylamine hydrochloride is the salt form of bis(2-chloroethyl)ethylamine, a chemically defined acyclic monoamine derivative. As a salt of an acyclic monoamine, it is classified under tariff item 2921.19.00 for other acyclic monoamines and their derivatives. It is used as a synthetic intermediate in chemical research.

Bis(2-chloroethyl)methylamine with Stabilizer

Bis(2-chloroethyl)methylamine with stabilizer is a stabilized form of chlormethine, featuring an added anti-caking agent for preservation. It remains an acyclic monoamine derivative and is classified under tariff item 2921.19.00, which covers other acyclic monoamines. Chapter 29 note 1(f) permits added stabilizers necessary for preservation or transport.

Chlormethine Hydrochloride

Chlormethine hydrochloride is the salt form of bis(2-chloroethyl)methylamine, a chemically defined acyclic monoamine derivative. It is classified under tariff item 2921.19.00, which covers other acyclic monoamines and their derivatives. This product is primarily used in pharmaceutical research.

Chlormethine N-Oxide Derivative

Chlormethine N-oxide derivative is a nitrone derivative of bis(2-chloroethyl)methylamine, maintaining the amine-function characteristic. It is classified as an acyclic monoamine derivative under tariff item 2921.19.00, which covers other acyclic monoamines. This product is supplied for synthetic applications.

Dibutylamine

Dibutylamine is a secondary acyclic monoamine with the formula (C4H9)2NH. It is a separate chemically defined organic compound used primarily as an epoxy curing agent and in the production of rubber chemicals.

Diethylamine

Diethylamine is a secondary acyclic monoamine with the formula (C2H5)2NH. It is a separate chemically defined organic compound used in chemical synthesis and as a corrosion inhibitor.

Diethylamine Hydrochloride

Diethylamine hydrochloride is the hydrochloride salt of diethylamine, a separate chemically defined organic compound. It is used as a pharmaceutical intermediate and in organic synthesis.

Diisopropylamine

Diisopropylamine is a secondary acyclic monoamine with the formula ((CH3)2CH)2NH. It is a separate chemically defined organic compound used as a strong base in pharmaceutical synthesis.

(Dimethylamino)isopropyl chloride hydrochloride

(Dimethylamino)isopropyl chloride hydrochloride is a quaternary amine salt with an acyclic monoamine structure, classified under tariff item 2921.19.00 as an 'other' acyclic monoamine derivative. It serves as a key intermediate in pharmaceutical synthesis, meeting Chapter 29 criteria for separate chemically defined organic compounds.

(Dimethylamino)isopropyl chloride hydrochloride BP/USP Grade

BP/USP grade (Dimethylamino)isopropyl chloride hydrochloride is a high-purity salt of an acyclic monoamine, classified under tariff item 2921.19.00 as an 'other' acyclic monoamine derivative. It is critical for producing muscle relaxants and anticholinergic drugs, meeting Chapter 29 requirements for chemically defined organic compounds.

(Dimethylamino)isopropyl chloride hydrochloride Technical Grade

Technical grade (Dimethylamino)isopropyl chloride hydrochloride at 98% purity is used for industrial synthesis and is classified under tariff item 2921.19.00 as an 'other' acyclic monoamine derivative. Lower purity does not affect classification as long as it remains a separate chemically defined organic compound.

(Dimethylamino)isopropyl chloride hydrochloride with Anti-caking Agent

Crystalline (Dimethylamino)isopropyl chloride hydrochloride with an added anti-caking agent is classified under tariff item 2921.19.00 as the additive is solely for preservation during storage and transport. Chapter 29 note 1(f) permits such stabilizers for chemically defined organic compounds without affecting classification.

Dipropylamine

Dipropylamine is a secondary acyclic monoamine with the formula (C3H7)2NH. It is a separate chemically defined organic compound used as an intermediate in rubber accelerator manufacturing.

Dipropylamine Phosphate

Dipropylamine phosphate is the phosphate salt of dipropylamine, a separate chemically defined organic compound. It is used in flame retardant formulations.

Ethylenediamine (1,2-Diaminoethane)

Ethylenediamine (1,2-Diaminoethane) is a separate chemically defined organic compound with the formula H2NCH2CH2NH2. It is used in chelating agents and epoxy hardeners.

High-Purity 3-Amino-3-methyl-1-butyne for Research

Research-grade 3-Amino-3-methyl-1-butyne with purity above 99.5% is a separate chemically defined acyclic monoamine supplied in small quantities for laboratory synthesis. It is classified under tariff item 2921.19.00 as an 'other' acyclic monoamine, consistent with Chapter 29 rules for chemically defined organic compounds.

HN1 Nitrogen Mustard Precursor

HN1 nitrogen mustard precursor, laboratory-grade bis(2-chloroethyl)ethylamine, is a separate chemically defined acyclic monoamine derivative. It is classified under tariff item 2921.19.00, which covers other acyclic monoamines and their derivatives. This product is exclusively a synthetic intermediate for chemical research, not for direct pharmaceutical use.

Isopropylamine

Isopropylamine is a primary acyclic monoamine used in herbicide production and epoxy resins. It is classified under tariff item 2921.19.00 as an 'other' acyclic monoamine, being a separate chemically defined organic compound meeting Chapter 29 criteria.

Monoisopropylamine

Monoisopropylamine is a primary acyclic monoamine with the formula (CH3)2CHNH2. It is a separate chemically defined organic compound used in agricultural chemicals.

Mono-n-butylamine

Mono-n-butylamine is a primary acyclic monoamine with the formula CH3(CH2)3NH2. It is a separate chemically defined organic compound used in the synthesis of herbicides and pharmaceuticals.

Mono-n-propylamine

Mono-n-propylamine is a primary acyclic monoamine with the formula CH3CH2CH2NH2. It is a separate chemically defined organic compound used in surfactant production and pesticide synthesis.

Mustargen Intermediate Bis(2-chloroethyl)ethylamine

Mustargen intermediate bis(2-chloroethyl)ethylamine is a pharmaceutical-grade acyclic monoamine derivative used as a key intermediate in producing mechlorethamine for cancer chemotherapy. It is classified under tariff item 2921.19.00, which covers other acyclic monoamines and their derivatives. This product meets Chapter 29 requirements as a separate chemically defined organic compound.

N-Ethylethylenediamine

N-Ethylethylenediamine is an acyclic diamine derivative used in epoxy curing agents and pharmaceuticals. Though technically a diamine, it is classified under tariff item 2921.19.00 as an 'other' acyclic monoamine derivative per Chapter 29 numerical order rules for amine-function compounds.