# HTS 2935: Sulfonamides:

https://geopax.app/tariffs/catalog/29/2935

Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=2935). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 2935: Sulfonamides:

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 2935 | Sulfonamides: |  |  |  |  |
| 2935.10.00.00 |   N-Methyl perfluorooctane sulfonamide | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
| 2935.20.00.00 |   N-Ethyl perfluorooctane sulfonamide | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
| 2935.30.00.00 |   N-Ethyl -N-(2-hydroxyethyl)perfluorooctane sulfonamide | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
| 2935.40.00.00 |   N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
| 2935.50.00.00 |   Other perfluorooctane sulfonamides | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
| 2935.90 |   Other: |  |  |  |  |
| 2935.90.06.00 |     4-Amino-6-chloro-m-benzenedisulfonamide and Methyl-4-aminobenzenesulfonylcarbamate (Asulam) | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 41% | kg |
| 2935.90.10.00 |     2-Amino-N-ethylbenzenesulfonanilide; 5-Amino-α,α,α-trifluorotoluene-2,4-disulfonamide; Benzenesulfonamide; Benzenesulfonyl hydrazide; 2-Chloro-4-amino-5-hydroxybenzenesulfonamide; 2,5-Dimethoxysulfanilanilide; and Metanilamide | 6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 41% | kg |
| 2935.90.13.00 |     (5‐[2‐Chloro‐4‐ (trifluoromethyl)phenoxy]‐N‐ (methylsulfonyl)‐2‐nitrobenzamide) (Fomesafen); N‐(2,6‐Dichloro‐3‐ methylphenyl)‐5‐ amino‐1,3,4‐triazole‐2‐sulfonamide; 2,4‐Dichloro‐5‐ sulfamoylbenzoic acid; N‐Ethyl‐o‐ toluenesulfonamide; N‐Ethyl‐p‐toluenesulfonamide; 7-(Hexadecylsulfonylamino) ‐1H‐indole; Methyl 5‐{[(4,6‐dimethoxy‐2‐pyrimidinyl)amino]‐ carbonylaminosulfonyl} ‐3‐chloro‐1‐methyl‐1H‐pyrazole‐4‐carboxylate (Halosulfuron methyl); and Mixtures of ortho‐ and para-toluenesulfonamides | Free |  | 15.4¢/kg + 57.5% | kg |
| 2935.90.15.00 |     o-Toluenesulfonamide | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
|  |     Other: |  |  |  |  |
| 2935.90.20.00 |       Fast color bases and fast color salts | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 54.5% | kg |
|  |       Drugs: |  |  |  |  |
|  |         Anti-infective agents: |  |  |  |  |
| 2935.90.29.00 |           Acetylsulfaguanidine | Free |  | 15.4¢/kg + 96% | kg |
| 2935.90.30.00 |           Sulfamethazine | Free |  | 15.4¢/kg + 80% | kg |
| 2935.90.32.00 |           Acetylsulfisoxazole; Sulfacetamide, sodium; and Sulfamethazine, sodium | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 96% | kg |
| 2935.90.33.00 |           Sulfathiazole and Sulfathiazole, sodium | Free |  | 15.4¢/kg + 133% | kg |
| 2935.90.42.00 |           Salicylazosulfapyridine (Sulfasalazine); Sulfadiazine; Sulfaguanidine; Sulfamerizine; and Sulfapyridine | Free |  | 15.4¢/kg + 128.5% | kg |
| 2935.90.48.00 |           Other | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 96% | kg |
| 2935.90.60.00 |         Other | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 45% | kg |
|  |       Other: |  |  |  |  |
| 2935.90.75.00 |         Products described in additional U.S. note 3 to section VI | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
| 2935.90.95.00 |         Other | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 57.5% | kg |
|  |   XI. PROVITAMINS, VITAMINS AND HORMONES |  |  |  |  |