Methylamine, di- or trimethylamine and their salts
Amine-function compounds > Acyclic monoamines and their derivatives; salts thereof: > Methylamine, di- or trimethylamine and their salts
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Products classified under HTS 2921.11.00.00
Monomethylamine Hydrochloride
Monomethylamine hydrochloride is the salt form of methylamine, a simple acyclic monoamine, used primarily in organic synthesis for pharmaceuticals and agrochemicals. It falls under HTS 2921.11.00.00 as a salt of methylamine, explicitly covered by the heading for methylamine, di- or trimethylamine and their salts. This chemically defined compound meets Chapter 29 note (a) for separate organic compounds.
Dimethylamine Hydrochloride
Dimethylamine hydrochloride, a salt of dimethylamine, serves as a key intermediate in producing surfactants, rubber accelerators, and herbicides. Classified under HTS 2921.11.00.00 due to its status as a di-methylamine salt, fitting the precise heading description. It qualifies as a separate chemically defined organic compound under Chapter 29.
Trimethylamine Hydrochloride
Trimethylamine hydrochloride is the crystalline salt of trimethylamine, widely used in choline synthesis for animal feed additives and pharmaceuticals. It is squarely under HTS 2921.11.00.00 as a trimethylamine salt, a chemically defined acyclic monoamine derivative. Chapter notes confirm inclusion of salts without exclusions applying.
Methylamine (40% Aqueous Solution)
Methylamine 40% in water is a standard transport form of methylamine, used in epoxy resin curing and dye manufacturing. Allowed under HTS 2921.11.00.00 per Chapter note (d) for products of (a) dissolved in water. Remains classified as the pure compound if meeting safety/transport criteria.
Dimethylamine Anhydrous
Anhydrous dimethylamine is the pure gaseous form compressed for transport, essential for solvent and propellant production. Directly classifiable under HTS 2921.11.00.00 as di-methylamine, a separate acyclic monoamine per Chapter 29 note (a). No exclusions apply to this base compound.
Trimethylamine 25% in Water
Trimethylamine 25% aqueous solution, stabilized for safe shipping, used in natural flavor synthesis and wastewater treatment. Covered by HTS 2921.11.00.00 under Chapter note (d) as trimethylamine dissolved in water for transport. Qualifies as the amine compound, not a preparation.
Methylammonium Chloride
Methylammonium chloride, synonymous with monomethylamine hydrochloride, is critical for perovskite solar cell production. HTS 2921.11.00.00 applies as a methylamine salt, chemically defined organic compound. Chapter salt classification rules confirm principal amine component governs.
Tetramethylammonium Chloride
Tetramethylammonium chloride derives from trimethylamine quaternization, used as phase transfer catalyst. While related, classified specifically under HTS 2921.11.00.00 if considered trimethylamine derivative salt; however, typically 292390—note for alternatives.
Dimethylamine Sulfate
Dimethylamine sulfate is an alternative salt form to hydrochloride, used in some dye intermediates and stabilizers. Falls under HTS 2921.11.00.00 as di-methylamine salt per heading and Chapter salt notes prioritizing organic component.
Choline Chloride (from Trimethylamine)
Choline chloride, produced from trimethylamine and ethylene oxide, functions as a nutrient in animal feed. While derivative, base trimethylamine salt structure keeps it under HTS 2921.11.00.00 if classified as such; often 292340—see alternatives.
Trimethylamine N-Oxide Dihydrate
Trimethylamine N-oxide dihydrate (TMAO) from seafood processing or synthesis, used as preservative and stabilizer. As trimethylamine derivative, potentially HTS 2921.11.00.00 but typically amine oxides elsewhere—precise for salts.
Methylamine Stabilized with Ammonia
Methylamine solution stabilized with ammonia for corrosion prevention during transport. HTS 2921.11.00.00 applies per Chapter note (f) for added stabilizers necessary for preservation.
Betaine Hydrochloride (Trimethylglycine HCl)
Betaine hydrochloride, a trimethylamine derivative, used as gastric acidifier supplement. Related via trimethylamine but classified here if salt emphasized.
Dimethylamine Borane Complex
Dimethylamine borane used in electroless plating. Organo-inorganic but salt-like.
Carnitine Hydrochloride (from Methylamine)
L-Carnitine HCl, synthesized via methylamine intermediates, for nutritional supplements.