Section VI · Organic chemicals

2933.99

Other:

How this code is built
29

Chapter

Organic chemicals

33

Heading

The product family within the chapter

99

Subheading

The specific good, identical worldwide

The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.

How the schedule reaches this code

  1. 29Organic chemicals
  2. 2933Heterocyclic compounds with nitrogen hetero-atom(s) only:
  3. Other:
  4. Other:

Published US duty rates

Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.

  • 2933.99.01.00Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoatekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 50%

    Countries without normal trade relations.

  • 2933.99.02.002-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl esterkg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 64.5%

    Countries without normal trade relations.

  • 2933.99.05.00Acridine and indolekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    Free

    Countries without normal trade relations.

  • 2933.99.06.00α-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)kg
    General
    6.5%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 64.5%

    Countries without normal trade relations.

  • 2933.99.08.00Aceto 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-methyleneindolinekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 52%

    Countries without normal trade relations.

  • 2933.99.11.00Carbazolekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 39.5%

    Countries without normal trade relations.

  • 2933.99.12.006-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, monomerkg
    General
    5.8%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 39.5%

    Countries without normal trade relations.

  • 2933.99.14.005-Amino-4-chloro-α-phenyl-3- pyridazinonekg
    General
    6.5%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 40.5%

    Countries without normal trade relations.

  • 2933.99.16.00o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide)kg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 40.5%

    Countries without normal trade relations.

  • 2933.99.17.01Insecticideskg
    General
    6.5%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 64.5%

    Countries without normal trade relations.

  • 2933.99.22.00Otherkg
    General
    6.5%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 64.5%

    Countries without normal trade relations.

  • 2933.99.24.00Photographic chemicalskg
    General
    6.5%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 50%

    Countries without normal trade relations.

  • 2933.99.26.00Antihistamineskg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 45%

    Countries without normal trade relations.

  • 2933.99.42.00Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamidekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 46%

    Countries without normal trade relations.

  • 2933.99.46.00Otherkg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 67.5%

    Countries without normal trade relations.

  • 2933.99.51.00Hydralazine hydrochloridekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 47.5%

    Countries without normal trade relations.

  • 2933.99.53.00Otherkg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 65%

    Countries without normal trade relations.

  • 2933.99.55Analgesics, antipyretics and nonhormonal anti-inflammatory agents
    General
    6.5%
    Special (FTA)
    Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg +47.5%

    Countries without normal trade relations.

  • 2933.99.58.00Droperidol; and Imipramine hydrochloridekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    15.4¢/kg + 45.5%

    Countries without normal trade relations.

  • 2933.99.61.00Otherkg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 149.5%

    Countries without normal trade relations.

  • 2933.99.65.00Anticonvulsants, hypnotics and sedativeskg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 48.5%

    Countries without normal trade relations.

  • 2933.99.70.00Otherkg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 58.5%

    Countries without normal trade relations.

  • 2933.99.75.00Otherkg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 45%

    Countries without normal trade relations.

  • 2933.99.79.00Products described in additional U.S. note 3 to section VIkg
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 52%

    Countries without normal trade relations.

  • 2933.99.82Other
    General
    6.5%
    Special (FTA)
    Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    15.4¢/kg + 52%

    Countries without normal trade relations.

  • 2933.99.85.003-Amino-1,2,4-triazolekg
    General
    3.7%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    25%

    Countries without normal trade relations.

  • 2933.99.89.00Hexamethyleneiminekg
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    30.5%

    Countries without normal trade relations.

  • 2933.99.90.00Drugskg
    General
    3.7%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    25%

    Countries without normal trade relations.

  • 2933.99.97.01Otherkg
    General
    6.5%
    Special (FTA)
    Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)

    Only if the goods qualify under one of these programs.

    Column 2
    30.5%

    Countries without normal trade relations.

This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.

Other subheadings in heading 2933

Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.