USMCA.COM
Chapter 29 HTS Revision 18 (2026)

Tariff Schedule

Chapter 29: Organic chemicals

774 provisions in this chapter where a USMCA claim changes the duty. 4 are also subject to Section 338 duties on Canadian goods, which a USMCA claim does not remove.

Showing 601 to 774 of 774, by tariff number.

HTSDescription GeneralUSMCASection 338
2931.46.00.00 Other organo-inorganic compounds: 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide 3.7% Free
2931.47.00.00 Other organo-inorganic compounds: (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate 3.7% Free
2931.48.00.00 Other organo-inorganic compounds: 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide 3.7% Free
2931.49.00 Other organo-inorganic compounds: Other 3.7% Free
2931.51.00.00 Other organo-inorganic compounds: Methylphosphonic dichloride 3.7% Free
2931.52.00.00 Other organo-inorganic compounds: Propylphosphonic dichloride 3.7% Free
2931.53.00.00 Other organo-inorganic compounds: O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate 3.7% Free
2931.54.00.00 Other organo-inorganic compounds: Trichlorfon (ISO) 3.7% Free
2931.59.00 Other organo-inorganic compounds: Other 3.7% Free
2931.90.10.00 Other organo-inorganic compounds: 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester 6.5% Free
2931.90.15.00 Other organo-inorganic compounds: Sodium tetraphenylboron 5.8% Free
2931.90.22.00 Other organo-inorganic compounds: Drugs 6.5% Free
2931.90.26.00 Other organo-inorganic compounds: Pesticides 6.5% Free
2931.90.30.00 Other organo-inorganic compounds: Products described in additional U.S. note 3 to section VI 6.5% Free
2931.90.60.00 Other organo-inorganic compounds: Other 6.5% Free
2931.90.90 Other organo-inorganic compounds: Other 3.7% Free
2932.11.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Tetrahydrofuran 3.7% Free
2932.13.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Furfuryl alcohol and tetrahydrofurfuryl alcohol 3.7% Free
2932.14.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Sucralose 3.7% Free
2932.19.10.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Aromatic 6.5% Free
2932.19.51.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Other 3.7% Free
2932.20.05.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Coumarin, methylcoumarins and ethylcoumarins 6.5% Free
2932.20.10.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Pesticides 6.5% Free
2932.20.20.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Drugs 6.5% Free
2932.20.25.00 Heterocyclic compounds with oxygen hetero-atom(s) only: 4-Hydroxycoumarin 6.5% Free
2932.20.30.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2932.20.45.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Other 6.5% Free
2932.20.50 Heterocyclic compounds with oxygen hetero-atom(s) only: Other 3.7% Free
2932.91.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Isosafrole 6.5% Free
2932.92.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: 1-(1,3-Benzodioxol-5-yl)propan-2-one 6.5% Free
2932.93.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Piperonal (heliotropin) 4.8% Free
2932.94.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Safrole 6.5% Free
2932.96.00.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Carbofuran (ISO) 6.5% Free
2932.99.08.00 Heterocyclic compounds with oxygen hetero-atom(s) only: 2-Ethoxy-2,3-dihydro-3,3-dimethyl-5- benzofuranylmethanesulfonate 6.5% Free
2932.99.21.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Other 6.5% Free
2932.99.35.00 Heterocyclic compounds with oxygen hetero-atom(s) only: 2-Hydroxy-3-dibenzofurancarboxylic acid 6.5% Free
2932.99.39.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Benzoin tetrahydropyranyl ester; and Xanthen-9-one 5.8% Free
2932.99.61 Heterocyclic compounds with oxygen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2932.99.70.00 Heterocyclic compounds with oxygen hetero-atom(s) only: Other 6.5% Free
2932.99.90 Heterocyclic compounds with oxygen hetero-atom(s) only: Other 3.7% Free
2933.11.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Phenazone (Antipyrine) and its derivatives 6.5% Free
2933.19.08.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid… 5.8% Free
2933.19.23.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Pesticides 6.5% Free
2933.19.30 Heterocyclic compounds with nitrogen hetero-atom(s) only: Photographic chemicals 6.5% Free
2933.19.35.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Drugs 6.5% Free
2933.19.37.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.19.43.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.19.45.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Drugs 3.7% Free
2933.19.90.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.21.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Hydantoin and its derivatives 6.5% Free
2933.29.10.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 2-Phenylimidazole 5.8% Free
2933.29.20.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Drugs 6% Free
2933.29.35.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.29.43.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.29.45.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Drugs 3.7% Free
2933.29.90.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.32.10.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Piperidine 6.5% Free
2933.32.50.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.34.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other fentanyls and their derivatives 6.5% Free
2933.35.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 3-Quinuclidinol 5.8% Free
2933.36.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 4-Anilino-N-phenethylpiperidine (ANPP) 6.5% Free
2933.37.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: N-Phenethyl-4-piperidone (NPP) 6.5% Free
2933.39.20.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride… 5.8% Free
2933.39.21.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Fungicides 6.5% Free
2933.39.23.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: o-Paraquat dichloride 6.5% Free
2933.39.25.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.39.27.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.39.31.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Antidepressants, tranquilizers and other psychotherapeutic agents 6.5% Free
2933.39.41.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.39.61 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.39.92.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.49.08.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 4,7-Dichloroquinoline 6.5% Free
2933.49.10.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4- trimethylquinoline) 6.5% Free
2933.49.15.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 8-Methylquinoline and Isoquinoline 5.8% Free
2933.49.20.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 5-Chloro-7-iodo-8-quinolinol (Iodo chlo rhydroxy quin); Deco quinate… 6.5% Free
2933.49.26.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.49.30.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Pesticides 6.5% Free
2933.49.60.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.49.70.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.54.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other derivatives of malonylurea (barbituric acid); salts thereof 3.7% Free
2933.59.10.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Herbicides 6.5% Free
2933.59.15.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.59.18.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.59.21.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Antihistamines, including those principally used as anti-nauseants 6.5% Free
2933.59.22.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Nicarbazin; and Trimethoprim 6.5% Free
2933.59.36.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.59.46.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Antidepressants, tranquilizers and other psychotherapeutic agents 6.5% Free
2933.59.53.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.59.59.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 3.7% Free
2933.59.70.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.59.80.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.59.95.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.61.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Melamine 3.5% Free
2933.69.50.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Hexamethylenetetramine 6.3% Free
2933.69.60 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 3.5% Free
2933.71.00.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 6-Hexanelactam (ε-Caprolactam) 6.5% Free
2933.79.08.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.79.15.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.79.20.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: N-Methyl-2-pyrrolidone; and 2-Pyrrolidone 4.2% Free
2933.79.30.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: N-Vinyl-2-pyrrolidone, monomer 5.5% Free
2933.79.85.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.06.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: α-Butyl-α-(4-chlorophenyl)-1H-1,2,4- triazole-1- propanenitrile… 6.5% Free
2933.99.12.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 6-Bromo-5-methyl-1H-imidazo[4,5-b]- pyridine… 5.8% Free
2933.99.14.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 5-Amino-4-chloro-α-phenyl-3- pyridazinone 6.5% Free
2933.99.17.01 Heterocyclic compounds with nitrogen hetero-atom(s) only: Insecticides 6.5% Free
2933.99.22.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.24.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Photographic chemicals 6.5% Free
2933.99.26.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Antihistamines 6.5% Free
2933.99.46.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.53.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.55 Heterocyclic compounds with nitrogen hetero-atom(s) only: Analgesics, antipyretics and nonhormonal anti-inflammatory agents 6.5% Free
2933.99.61.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.65.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Anticonvulsants, hypnotics and sedatives 6.5% Free
2933.99.70.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.75.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.79.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Products described in additional U.S. note 3 to section VI 6.5% Free
2933.99.82 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2933.99.85.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: 3-Amino-1,2,4-triazole 3.7% Free
2933.99.90.00 Heterocyclic compounds with nitrogen hetero-atom(s) only: Drugs 3.7% Free
2933.99.97.01 Heterocyclic compounds with nitrogen hetero-atom(s) only: Other 6.5% Free
2934.10.10.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Products described in additional… 6.5% Free
2934.10.20.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.10.90.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.20.05.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds:… 6.5% Free
2934.20.10.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2,2'-Dithiobisbenzothiazole 6.5% Free
2934.20.15.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2-Mercaptobenzothiazole… 6.5% Free
2934.20.20.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2-Mercaptobenzothiazole, sodium… 6.5% Free
2934.20.30.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2-Amino-6-methoxy benzo… 5.8% Free
2934.20.35.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Pesticides 6.5% Free
2934.20.40.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Products described in additional… 6.5% Free
2934.20.80.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.30.12.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2-(Trifluoromethyl)phenothiazine 6.5% Free
2934.30.23.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Antidepressants, tranquilizers… 6.5% Free
2934.30.27.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.30.43.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Products described in additional… 6.5% Free
2934.30.50.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.92.00.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other fentanyls and their… 6.5% Free
2934.99.05.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds:… 5.8% Free
2934.99.06.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds:… 6.5% Free
2934.99.08.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2,5-Diphenyloxazole 6.5% Free
2934.99.11.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: 2-tert-Butyl-4-(2,4-dichloro-5-… 6.5% Free
2934.99.12.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Fungicides 6.5% Free
2934.99.15.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Herbicides 6.5% Free
2934.99.16.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Insecticides 6.5% Free
2934.99.18.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.99.20.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Photographic chemicals 6.5% Free
2934.99.30.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Drugs 6.5% Free
2934.99.39.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Products described in additional… 6.5% Free
2934.99.44.00 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2934.99.47 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Drugs 3.7% Free
2934.99.90.01 Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: Other 6.5% Free
2935.10.00.00 Sulfonamides: N-Methyl perfluorooctane sulfonamide 6.5% Free
2935.20.00.00 Sulfonamides: N-Ethyl perfluorooctane sulfonamide 6.5% Free
2935.30.00.00 Sulfonamides: N-Ethyl -N-(2-hydroxyethyl)perfluorooctane sulfonamide 6.5% Free
2935.40.00.00 Sulfonamides: N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide 6.5% Free
2935.50.00.00 Sulfonamides: Other perfluorooctane sulfonamides 6.5% Free
2935.90.06.00 Sulfonamides: 4-Amino-6-chloro-m-benzenedisulfonamide and Methyl-4-aminobenzenesulfonylcarbamate (Asulam) 6.5% Free
2935.90.10.00 Sulfonamides: 2-Amino-N-ethylbenzenesulfonanilide; 5-Amino-α,α,α-trifluorotoluene-2,4-disulfonamide; Benzenesulfonamide… 6.5% Free
2935.90.15.00 Sulfonamides: o-Toluenesulfonamide 6.5% Free
2935.90.20.00 Sulfonamides: Fast color bases and fast color salts 6.5% Free
2935.90.32.00 Sulfonamides: Acetylsulfisoxazole; Sulfacetamide, sodium; and Sulfamethazine, sodium 6.5% Free
2935.90.48.00 Sulfonamides: Other 6.5% Free
2935.90.60.00 Sulfonamides: Other 6.5% Free
2935.90.75.00 Sulfonamides: Products described in additional U.S. note 3 to section VI 6.5% Free
2935.90.95.00 Sulfonamides: Other 6.5% Free
2938.10.00.00 Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: Rutoside (Rutin) and its… 1.5% Free
2938.90.00.00 Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: Other 3.7% Free
2939.80.00 Alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: Other 6.5% Free
2940.00.60.00 Sugars, chemically pure, other than sucrose, lactose, maltose, glucose and fructose; sugar ethers, sugar acetals and sugar… 5.8% Free Motor Vehicles
2941.20.10.00 Antibiotics: Dihydrostreptomycin and its derivatives; salts thereof 3.5% Free
2942.00.05.00 Other organic compounds: Drugs 6.5% Free
2942.00.10.00 Other organic compounds: Products described in additional U.S. note 3 to section VI 6.5% Free
2942.00.35.00 Other organic compounds: Other 6.5% Free
2942.00.50.00 Other organic compounds: Other 3.7% Free