Heading 2931: Other organo-inorganic compounds
In chapter 29, Organic chemicals. 25 rate lines, laid out as HTS Revision 20 (2026) prints them.
| HTS number | Description | Units | General | Special | Column 2 |
|---|---|---|---|---|---|
| 2931 | Other organo-inorganic compounds: | ||||
| 2931.10.00.00 | Tetramethyl lead and tetraethyl lead | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.20.00.00 | Tributyltin compounds | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| Non-halogenated organo-phosphorous derivatives: | |||||
| 2931.41.00.00 | Dimethyl methylphosphonate | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.42.00.00 | Dimethyl propylphosphonate | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.43.00.00 | Diethyl ethylphosphonate | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.44.00.00 | Methylphosphonic acid | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.45.00.00 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1) | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.46.00.00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.47.00.00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.48.00.00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.49.00 | Other | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2931.49.00.05 | O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates | kg | |||
| 2931.49.00.08 | [O-2-(Dialkyl (methyl, ethyl, n-propyl or isopropyl) amino)ethyl] hydrogen alkyl (methyl, ethyl, n-propyl or isopropyl) phosphonites and their O-alkyl (≤C10, including cycloalkyl) esters; alkylated or protonated salts thereof | kg | |||
| 2931.49.00.10 | 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters | kg | |||
| 2931.49.00.15 | Butyl methylphosphinate | kg | |||
| 2931.49.00.20 | N-(Phosphonomethyl) glycine (glyphosate) and its salts and esters | kg | |||
| 2931.49.00.25 | Bis(1-methylpentyl) methylphosphonate | kg | |||
| Other: | |||||
| 2931.49.00.55 | Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms | kg | |||
| 2931.49.00.80 | Other | kg | |||
| Halogenated organo-phosphorous derivatives: | |||||
| 2931.51.00.00 | Methylphosphonic dichloride | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.52.00.00 | Propylphosphonic dichloride | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.53.00.00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.54.00.00 | Trichlorfon (ISO) | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2931.59.00 | Other | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2931.59.00.10 | O-Alkyl (≤ C10, including cycloalkyl) alkyl (methyl, ethyl,n- propyl or isopropyl) phosphonofluoridates | kg | |||
| 2931.59.00.15 | Alkyl (methyl, ethyl, n-propyl or isopropyl) phosphonyl difluorides | kg | |||
| 2931.59.00.20 | O-Isopropyl methylphosphonochloridate | kg | |||
| 2931.59.00.25 | O-Pinacolyl methylphosphonochloridate | kg | |||
| 2931.59.00.30 | P-Alkyl (≤ C10, incl. cycloalkyl) N-(1-(dialkyl (≤ C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts | kg | |||
| 2931.59.00.35 | Methyl- bis(diethylamino)methylene)phosphonamidofluoridate | kg | |||
| 2931.59.00.60 | Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms | kg | |||
| 2931.59.00.80 | Other | kg | |||
| 2931.90 | Other: | ||||
| Aromatic: | |||||
| 2931.90.05.00 | Diphenyldichlorosilane; and phenyltrichlorosilane | kg | Free | 15.4¢/kg + 68.5% | |
| 2931.90.10.00 | 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester | kg | 6.5% | Free (A+, AU, BH, CL,CO,D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG) | 15.4¢/kg + 40% |
| 2931.90.15.00 | Sodium tetraphenylboron | kg | 5.8% | Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG) | 15.4¢/kg + 40% |
| Other: | |||||
| 2931.90.22.00 | Drugs | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 67.5% |
| 2931.90.26.00 | Pesticides | kg | 6.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 40% |
| Other: | |||||
| 2931.90.30.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 68.5% |
| 2931.90.60.00 | Other | kg | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 68.5% |
| Other: | |||||
| 2931.90.70.00 | N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts | kg | Free | 25% | |
| 2931.90.90 | Other | 3.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2931.90.90.10 | Organo-silicon compounds | kg | |||
| Organo-tin compounds: | |||||
| 2931.90.90.21 | Dibutyltin oxide | kg | |||
| 2931.90.90.25 | Tetrabutyltin | kg | |||
| 2931.90.90.29 | Other | kg | |||
| 2931.90.90.30 | 2-Chlorovinyldichloroarsine | kg | |||
| 2931.90.90.35 | Bis(2-chlorovinyl)chloroarsine | kg | |||
| 2931.90.90.40 | Tris(2-chlorovinyl)arsine | kg | |||
| 2931.90.90.52 | Other | kg |
Rates are quoted as printed. Each 8-digit number opens its own page with footnotes and cited chapter 99 headings.
Watch lines in heading 2931
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- 9903.90.08 cited by 10 lines
- 9903.88.04 cited by 5 lines
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Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.