Analysis
HTS 2930.40.00 covers organo-sulfur compounds: methionine under heading 2930 (organo-sulfur compounds).
Neighbouring lines carry rates from duty-free to 6.5%, so the exact line matters. The widest gap is with 2930.90.43 (other: other), at 6.5%: a product that belongs there but is entered here, or the reverse, changes the duty by 6.5 percentage points.
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 26% of the 1050 tariff lines in chapter 29. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
Goods from countries without normal trade relations pay the column 2 rate of 25% instead of nothing, so origin decides between free entry and a 25% duty.
Census statistics map these goods to NAICS 325199 (All Other Basic Organic Chemical Manufacturing), an industry of 894 US establishments employing 77,304 people. That is the industry code a US manufacturer of the same product would normally use.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2930.10.01 | 2-(N,N-Dimethylamino) ethanethiol | 3.7% |
| 2930.20.10 | Aromatic: pesticides | 6.5% |
| 2930.20.20 | Aromatic: other | 6.5% |
| 2930.20.70 | S-(2,3,3'-trichloroallyl)diisopropylthiocarbamate | Free |
| 2930.20.90 | Other: other | 3.7% |
| 2930.30.30 | Tetramethylthiuram monosulfide | Free |
| 2930.30.60 | Thiuram mono-, di- or tetrasulfides: other | 3.7% |
| 2930.60.00 | 2-(N,N-Diethylamino)ethanethiol | 3.7% |
| 2930.70.00 | Bis(2-hydroxyethyl)sulfide (thiodiglycol (INN)) | 3.7% |
| 2930.80.00 | Aldicarb (ISO), captafol (ISO) and methamidophos (ISO) | 6.5% |
| 2930.90.10 | Aromatic: pesticides | 6.5% |
| 2930.90.24 | N-Cyclohexylthiophthalimide | 6.5% |
| 2930.90.26 | 3-(4'-Aminobenzamido)phenyl-ß-hydroxy- ethylsulfone; 2-[(4-Aminophenyl)sulfonyl] ethanol, hydrogen sulfate ester; Diphenylthiourea;N,N'-(Dithiodi-2,1-phenylene) bisbenzamide; Pentachlorothiophenol; and 4,4'-Thiodiphenyl cyanate | Free |
| 2930.90.29 | Other: other | 6.5% |
| 2930.90.30 | Thiocyanates, thiurams and isothiocyanates | 3.7% |
| 2930.90.42 | O,O-Dimethyl-S-methyl carbamoyl- methyl phosphorodithioate; and Malathion | Free |
| 2930.90.43 | Other: other | 6.5% |
| 2930.90.46 | dl-Hydroxy analogue of dl-methionine | Free |
| 2930.90.49 | Acids: other | 4.2% |
| 2930.90.71 | Other: dibutylthiourea | Free |
| 2930.90.92 | Other: other | 3.7% |