Chapter 29: Organic chemicals

2933.21.00.00

Hydantoin and its derivatives

2933.29.05.00

1-[1-((4-Chloro-2-(trifluoromethyl)phenyl)- imino)-2-propoxyethyl]-1H-imidazole (Triflumizole); and Ethylene thiourea

2933.29.10.00

2-Phenylimidazole

2933.29.35.00

Products described in additional U.S. note 3 to section VI

2933.29.60.00

Imidazole

2933.31.00.00

Pyridine and its salts

2933.32.10.00

Piperidine

2933.33.01.00

Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), carfentanil (INN), difenoxin (INN), diphenoxylate (INN), dipipanone (INN), fentanyl (INN), ketobemidone (INN), methylphenidate (INN), pentazocine (INN), pethidine (INN), pethidine (INN) intermediate A, phencyclidine (INN) (PCP), phenoperidine (INN), pipradrol (INN), piritramide (INN), propiram (INN), remifentanil (INN) and trimeperidine (INN); salts thereof

2933.34.00.00

Other fentanyls and their derivatives

2933.35.00.00

3-Quinuclidinol

2933.36.00.00

4-Anilino-N-phenethylpiperidine (ANPP)

2933.37.00.00

N-Phenethyl-4-piperidone (NPP)

2933.39.08.00

1-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride

2933.39.10.00

Collidines, lutidines and picolines

2933.39.20.00

p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid

2933.39.21.00

Fungicides

2933.39.23.00

o-Paraquat dichloride

2933.39.31.00

Antidepressants, tranquilizers and other psychotherapeutic agents

2933.39.61

Products described in additional U.S. note 3 to section VI

2933.41.00.00

Levorphanol (INN) and its salts

2933.49.08.00

4,7-Dichloroquinoline

2933.49.10.00

Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4- trimethylquinoline)

2933.49.15.00

8-Methylquinoline and Isoquinoline

2933.49.17.00

Ethyl ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3- quinolinecarboxylate

2933.49.20.00

5-Chloro-7-iodo-8-quinolinol (Iodo chlo rhydroxy quin); Deco quinate; Diiodo hydroxy quin; and Oxy quinoline sulfate

2933.49.30.00

Pesticides

2933.49.60.00

Products described in additional U.S. note 3 to section VI

2933.52.10.00

Malonylurea (barbituric acid)

2933.53.00.00

Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof

Base rate: 3.7%Source retrieved: 2026-05-11

2933.54.00.00

Other derivatives of malonylurea (barbituric acid); salts thereof

2933.55.00.00

Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof

2933.59.10.00

Herbicides

2933.59.21.00

Antihistamines, including those principally used as anti-nauseants

2933.59.22.00

Nicarbazin; and Trimethoprim

2933.59.46.00

Antidepressants, tranquilizers and other psychotherapeutic agents

2933.59.70.00

Products described in additional U.S. note 3 to section VI

2933.59.85.00

2-Amino-4-chloro-6-methoxy pyrimidine; 2-Amino-4,6-di methoxy pyrimidine; and 6-Methyl uracil

Base rate: 3.5%Source retrieved: 2026-05-11

2933.61.00.00

Melamine

2933.69.20.00

2,4-Diamino-6-phenyl-1,3,5-triazine

Base rate: 6.3%Source retrieved: 2026-05-11

2933.69.50.00

Hexamethylenetetramine

2933.71.00.00

6-Hexanelactam (ε-Caprolactam)

2933.72.00.00

Clobazam (INN) and methyprylon (INN)

2933.79.04.00

2,5-Dihydro-3,6-diphenylpyrrolo-(3,4-c)- pyrrole-1,4-dione

2933.79.08.00

Products described in additional U.S. note 3 to section VI

Base rate: 4.2%Source retrieved: 2026-05-11

2933.79.20.00

N-Methyl-2-pyrrolidone; and 2-Pyrrolidone

2933.79.30.00

N-Vinyl-2-pyrrolidone, monomer

Base rate: 5.5%Source retrieved: 2026-05-11

2933.79.40.00

12-Aminododecanoic acid lactam

2933.91.00

Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereof

2933.92.00.00

Azinphos-methyl

2933.99.01.00

Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoate

2933.99.02.00

2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl ester

2933.99.05.00

Acridine and indole

2933.99.06.00

α-Butyl-α-(4-chlorophenyl)-1H-1,2,4- triazole-1- propanenitrile (Myclobutanil); andα-[2-(4-Chlorophenyl)ethyl]-α-phenyl-1H- 1,2,4-triazole-1-propanenitrile (Fenbuconazole)

2933.99.08.00

Aceto acetyl-5-amino benz imidazolone; 3-(2H-Benzo triazol-2-yl)-5-(tert-butyl)-4- hydroxy benzene propanoic acid, C7-C9 branched or linear alkyl esters; 2-(2H-Benzotriazol-2-yl)-6-dodecyl-4- methyl phenol, in liquid form, branched and linear; and 1,3,3-Trimethyl-2-methyleneindoline

2933.99.11.00

Carbazole

2933.99.12.00

6-Bromo-5-methyl-1H-imidazo[4,5-b]- pyridine; 2-sec-Butyl-4-tert-butyl-6-(benzotriazol-2- yl)phenol; 2-tert-Butyl-4-methyl-6-(5-chlorobenzotri- azol-2-yl)phenol; 2,4-Di-tert-butyl-6-(benzotriazol-2-yl)phenol; 2,4-Di-tert-butyl-6-(5-chlorobenzotriazol-2- yl)phenol; 2,3-Dichloro-6-quinoxalinecarbonyl chloride; 1-Hydroxy-2-carbazolecarboxylic acid; 2-Hydroxy-3-carbazolecarboxylic acid; 2-Hydroxy-3-carbazolecarboxylic acid, sodium salt; Iminodibenzyl(10,11-dihydro-5H-dibenz- [b,f]azepine); Indoline; 3-Methylbenzo[f]quinoline; 2-Methylindoline; 2-Methylmercaptobenzimidazole; 1-Methyl-2-phenylindole; 1-Methylpyrazine; 2,4-Methylpyrazolic acid; 2-Phenylbenzimidazole; 2-Phenylindole; Tetramethylpyrazine; 2,3,5-Triphenyltetrazolium chloride;dl-Tryptophan; and Vinylcarbazole, monomer

2933.99.14.00

5-Amino-4-chloro-α-phenyl-3- pyridazinone

2933.99.16.00

o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide)

2933.99.17.01

Insecticides

2933.99.24.00

Photographic chemicals

2933.99.26.00

Antihistamines

2933.99.42.00

Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide

2933.99.51.00

Hydralazine hydrochloride

2933.99.55

Analgesics, antipyretics and nonhormonal anti-inflammatory agents

2933.99.58.00

Droperidol; and Imipramine hydrochloride

2933.99.65.00

Anticonvulsants, hypnotics and sedatives

2933.99.79.00

Products described in additional U.S. note 3 to section VI

Base rate: 3.7%Source retrieved: 2026-05-11

2933.99.85.00

3-Amino-1,2,4-triazole

2933.99.89.00

Hexamethyleneimine

2934.10.10.00

Products described in additional U.S. note 3 to section VI

2934.10.70.00

4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one; Ethyl 2-(2-aminothiazol-4-yl)-2- hydroxyiminoacetate; Ethyl 2-(2-aminothiazol-4-yl)-2- methoxyiminoacetate; 2-Methyl-4-isothiazolin- 3-one; 2-n-Octyl-4-isothiazolin-3-one; and Thiothiamine hydrochloride

2934.20.05.00

N-tert-Butyl-2-benzothiazolesulfenamide

2934.20.10.00

2,2'-Dithiobisbenzothiazole

2934.20.15.00

2-Mercaptobenzothiazole; andN-(Oxydiethylene)benzothiazole-2-sulfenamide

2934.20.20.00

2-Mercaptobenzothiazole, sodium salt (2-Benzothiazolethiol, sodium salt)

2934.20.25.00

2-Amino-5,6-dichloro benzo thiazole; 2-(4-Amino phenyl)-6-methyl benzo thiazole-7- sulfonic acid; 2-Amino-6-nitro benzo thiazole; andN,N-Di cyclo hexyl-2-benzo thiazole sulfenamide

2934.20.30.00

2-Amino-6-methoxy benzo thiazole; 2-Amino-6-methyl benzo thiazole; 6-Ethoxy-2-benzo thiazo lethiol; 3-Methyl benzo thiazole-2-hydrazone; and Primuline base

2934.20.35.00

Pesticides

2934.20.40.00

Products described in additional U.S. note 3 to section VI

2934.30.12.00

2-(Trifluoromethyl)phenothiazine

2934.30.18.00

Ethyl (1H-phenothiazin-2,4,1)carbamate

2934.30.23.00

Antidepressants, tranquilizers and other psychotherapeutic agents

2934.30.43.00

Products described in additional U.S. note 3 to section VI

2934.91.00.00

Aminorex (INN), brotizolam (INN), clotiazepam (INN), cloxazolam (INN), dextromoramide (INN), haloxazolam (INN), ketazolam (INN), mesocarb (INN), oxazolam (INN), pemoline (INN), phendimetrazine (INN), phenmetrazine (INN) and sufentanil (INN); salts thereof

2934.92.00.00

Other fentanyls and their derivatives

2934.99.01.00

Mycophenolate mofetil

2934.99.03.00

2-Acetylbenzo(b)thiophene; 3-Methylene-7-(2-phenoxyacetamido)- cephan-4-carboxylic acid, p-nitrobenzyl ester, 1-oxide; and Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid and its sodium salt

2934.99.05.00

5-Amino-3-phenyl-1,2,4-thiadiazole (3-Phenyl-5-amino-1,2,4-thiadiazole); 2-Hydroxybenzoxazole (Benzoxazolone); 4-Phenylmorpholine; 1,9-Thianthrenedicarboxylic acid; and Thioxanthene-9-one (Thioxanthone)

2934.99.06.00

7-Nitronaphth[1,2]oxadiazole-5-sulfonic acid and its salts

2934.99.07.00

Ethyl 2-[4-[(6-chloro-2-benzoxazolyl)oxy]- phenoxy]propanoate (Fenoxaprop-ethyl)

2934.99.08.00

2,5-Diphenyloxazole

2934.99.09.00

1,2-Benzisothiazolin-3-one

2934.99.11.00

2-tert-Butyl-4-(2,4-dichloro-5- isopropoxyphenyl)-Δ²-1,3,4- oxadiazolin-5-one; 3-Isopropyl-1H-2,1,3- benzothiadiazin-4-(3H)-one-2,2- dioxide (Bentazon); andO,O-Diethyl-S-[(6-chloro-2- oxobenzoxazolin-3-yl)methyl]- phosphorodithioate (Phosalone)

2934.99.12.00

Fungicides

2934.99.15.00

Herbicides

2934.99.16.00

Insecticides

2934.99.20.00

Photographic chemicals

2934.99.39.00

Products described in additional U.S. note 3 to section VI

2934.99.70.00

Morpholinoethyl chloride hydrochloride; 2-Methyl-2,5-dioxo-1-oxa-2-phospholan; and (6R-trans)-7-Amino-3-methyl-8-oxo-5- thia-1-azabicyclo[4.2.0]-oct-2-ene-2- carboxylic acid