Analysis
Heading 2935 of the Harmonized Tariff Schedule covers sulfonamides. It divides into 6 six-digit subheadings and 19 eight-digit tariff lines, with 19 ten-digit statistical suffixes below them.
The spread of 6.5 percentage points between the cheapest and dearest lines makes misclassification expensive here. The highest rate, 6.5%, applies to 2935.10.00 (n-Methyl perfluorooctane sulfonamide) and 2935.20.00 (n-Ethyl perfluorooctane sulfonamide).
5 of its 19 lines with a percentage rate are duty-free at the general rate (26%) and 14 are dutiable, from duty-free up to 6.5%. The median line pays 6.5%.
Its median rate of 6.5% sits at the 83rd percentile of the headings in chapter 29.
The largest subheadings are 2935.90 (other, 14 lines), 2935.10 (unnamed, 1 line), 2935.20 (unnamed, 1 line) and 2935.30 (unnamed, 1 line).
By Census's concordance, most of its statistical lines are made by All Other Basic Organic Chemical Manufacturing (325199), Pharmaceutical Preparation Manufacturing (325412) and Synthetic Dye and Pigment Manufacturing (325130). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2935.10.00 | N-Methyl perfluorooctane sulfonamide | 6.5% |
| 2935.20.00 | N-Ethyl perfluorooctane sulfonamide | 6.5% |
| 2935.30.00 | N-Ethyl -N-(2-hydroxyethyl)perfluorooctane sulfonamide | 6.5% |
| 2935.40.00 | N-(2-hydroxyethyl)-N-methyl perfluorooctane sulfonamide | 6.5% |
| 2935.50.00 | Sulfonamides: other perfluorooctane sulfonamides | 6.5% |
| 2935.90.06 | 4-Amino-6-chloro-m-benzenedisulfonamide and Methyl-4-aminobenzenesulfonylcarbamate (Asulam) | 6.5% |
| 2935.90.10 | 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% |
| 2935.90.13 | (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 |
| 2935.90.15 | o-Toluenesulfonamide | 6.5% |
| 2935.90.20 | Fast color bases and fast color salts | 6.5% |
| 2935.90.29 | Acetylsulfaguanidine | Free |
| 2935.90.30 | Anti-infective agents: sulfamethazine | Free |
| 2935.90.32 | Acetylsulfisoxazole; Sulfacetamide, sodium; and Sulfamethazine, sodium | 6.5% |
| 2935.90.33 | Sulfathiazole and Sulfathiazole, sodium | Free |
| 2935.90.42 | Salicylazosulfapyridine (Sulfasalazine); Sulfadiazine; Sulfaguanidine; Sulfamerizine; and Sulfapyridine | Free |
| 2935.90.48 | Anti-infective agents: other | 6.5% |
| 2935.90.60 | Drugs: other | 6.5% |
| 2935.90.75 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2935.90.95 | Other: other | 6.5% |