2934.99.39.00
Products described in additional U.S. note 3 to section VI
Classification path
- Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
- Other
- Other
- Aromatic or modified aromatic
- Other
- Other
- Products described in additional U.S. note 3 to section VI
Rates of duty
- General (MFN)
- 6.5%
- Column 2Cuba, North Korea, Russia, Belarus
- 15.4¢/kg + 52%
- Unit of quantity
- kg
Trade agreement rates
Related lines in heading 2934
- 2934.10.10.00Products described in additional U.S. note 3 to section VI6.5%
- 2934.10.20.00Aromatic or modified aromatic / Other6.5%
- 2934.10.70.004,5-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 hydrochlorideFree
- 2934.10.90.00Other6.5%
- 2934.20.05.00N-tert-Butyl-2-benzothiazolesulfenamide6.5%
- 2934.20.10.002,2'-Dithiobisbenzothiazole6.5%
- 2934.20.15.002-Mercaptobenzothiazole; andN-(Oxydiethylene)benzothiazole-2-sulfenamide6.5%
- 2934.20.20.002-Mercaptobenzothiazole, sodium salt (2-Benzothiazolethiol, sodium salt)6.5%
- 2934.20.25.002-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 sulfenamideFree
- 2934.20.30.002-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 base5.8%
- 2934.20.35.00Pesticides6.5%
- 2934.20.40.00Products described in additional U.S. note 3 to section VI6.5%
About heading 2934
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds
Heading 2934 covers nucleic acids and their salts and other heterocyclic compounds not covered by another heading. The lines are split first by ring system (thiazole, benzothiazole, phenothiazine, or other), then by aromatic or modified aromatic status, named compounds, and end use such as pesticide, drug, or photographic chemical.
Full guide to heading 2934Products in this heading
- 2-Methyl-4-isothiazolin-3-one preservative
- 2-n-Octyl-4-isothiazolin-3-one preservative
- 2-Mercaptobenzothiazole rubber accelerator
- Bentazon herbicide
- Phosalone insecticide
- Mycophenolate mofetil
- Tacrolimus
- Timolol maleate
Frequently asked questions
What is the HTS code for 2-methyl-4-isothiazolin-3-one?
Use 2934.10.70.00; the general (MFN) rate is Free.
What is the duty on 2-mercaptobenzothiazole?
2-Mercaptobenzothiazole is classified under 2934.20.15.00, with a general (MFN) rate of 6.5%.
How do I classify a benzothiazole rubber accelerator that is not specifically named?
If it contains a benzothiazole ring system and no more specific named line applies, use 2934.20.80.00 for other compounds; the general (MFN) rate is 6.5%. If it is a pesticide, use 2934.20.35.00, also at a general (MFN) rate of 6.5%.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.