Organic Chemicals · 1 pending regulation · 15 court cases · $91.6M monthly imports · 100% from 1 countries · Updated daily from USITC
General
Free
Special
Free
Column 2
Free
Trade Agreement Eligibility
Monthly Imports
$91.6M
2026-01
Trade Concentration
100%
from top 3 of 1 origins
Regulatory Pressure
HIGH
0 rulings — · 1 reg · 9 CIT, 6 CAFC
Global Rates
🇺🇸 Free
🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A
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Data compiled from USITC HTS, US Census Bureau, Federal Register, CourtListener · As of 2026-04-29 · Updates monthly
This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 1 pending Federal Register actions, and 15 CIT/CAFC cases.
100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.
List 2 — ~$16B of Chinese goods (semiconductors, chemicals, plastics)
Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.
Effective 2018-07-06
These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →
| Code | Description | Rate |
|---|---|---|
| 2931.10.00.00 | Tetramethyl lead and tetraethyl lead | 3.7% |
| 2931.20.00.00 | Tributyltin compounds | 3.7% |
| 2931.41.00.00 | Dimethyl methylphosphonate | 3.7% |
| 2931.42.00.00 | Dimethyl propylphosphonate | 3.7% |
| 2931.43.00.00 | Diethyl ethylphosphonate | 3.7% |
| 2931.44.00.00 | Methylphosphonic acid | 3.7% |
| 2931.45.00.00 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1) | 3.7% |
| 2931.46.00.00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide | 3.7% |
| 2931.47.00.00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate | 3.7% |
| 2931.48.00.00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | 3.7% |
| 2931.49.00 | Other | 3.7% |
| 2931.49.00.05 | <i>O</i>-Alkyl (≤C<sub>10</sub>, including cycloalkyl) <i>N,N</i>-dialkyl (methyl, ethyl, <i>n</i>-propyl or isopropyl) phosphoramidocyanidates | — |
| 2931.49.00.08 | [<i>O</i>-2-(Dialkyl (methyl, ethyl, <i>n</i>-propyl or isopropyl) amino)ethyl] hydrogen alkyl (methyl, ethyl, <i>n</i>-propyl or isopropyl) phosphonites and their <i>O</i>-alkyl (≤C<sub>10</sub>, including cycloalkyl) esters; alkylated or protonated salts thereof | — |
| 2931.49.00.10 | 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters | — |
| 2931.49.00.15 | Butyl methylphosphinate | — |
| 2931.49.00.20 | <i>N</i>-(Phosphonomethyl) glycine (glyphosate) and its salts and esters | — |
| 2931.49.00.25 | Bis(1-methylpentyl) methylphosphonate | — |
| 2931.49.00.55 | Containing a phosphorus atom to which one methyl, ethyl, <i>n</i>-propyl or isopropyl group is bonded but no further carbon atoms | — |
| 2931.49.00.80 | Other | — |
| 2931.51.00.00 | Methylphosphonic dichloride | 3.7% |
| 2931.52.00.00 | Propylphosphonic dichloride | 3.7% |
| 2931.53.00.00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate | 3.7% |
| 2931.54.00.00 | Trichlorfon (ISO) | 3.7% |
| 2931.59.00 | Other | 3.7% |
| 2931.59.00.10 | <i>O</i>-Alkyl (≤ C<sub>10</sub>, including cycloalkyl) alkyl (methyl, ethyl,<i>n</i>- propyl or isopropyl) phosphonofluoridates | — |
| 2931.59.00.15 | Alkyl (methyl, ethyl, <i>n</i>-propyl or isopropyl) phosphonyl difluorides | — |
| 2931.59.00.20 | <i>O</i>-Isopropyl methylphosphonochloridate | — |
| 2931.59.00.25 | <i>O</i>-Pinacolyl methylphosphonochloridate | — |
| 2931.59.00.30 | <i>P</i>-Alkyl (≤ C<sub>10</sub>, incl. cycloalkyl) <i>N</i>-(1-(dialkyl (≤ C<sub>10</sub>, incl. cycloalkyl) amino))alkylidene (H or ≤C<sub>10</sub>, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts | — |
| 2931.59.00.35 | Methyl- bis(diethylamino)methylene)phosphonamidofluoridate | — |
| 2931.59.00.60 | Containing a phosphorus atom to which one methyl, ethyl, <i>n</i>-propyl or isopropyl group is bonded but no further carbon atoms | — |
| 2931.59.00.80 | Other | — |
| 2931.90 | Other: | — |
| 2931.90.05.00 | Diphenyldichlorosilane; and phenyltrichlorosilane | Free |
| 2931.90.10.00 | 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-<i>tert</i>-butyl)phenyl ester | 6.5% |
| 2931.90.15.00 | Sodium tetraphenylboron | 5.8% |
| 2931.90.22.00 | Drugs | 6.5% |
| 2931.90.26.00 | Pesticides | 6.5% |
| 2931.90.30.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2931.90.60.00 | Other | 6.5% |
| 2931.90.70.00 | <i>N</i>,<i>N</i>'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts | Free |
| 2931.90.90 | Other | 3.7% |
| 2931.90.90.10 | Organo-silicon compounds | — |
| 2931.90.90.21 | Dibutyltin oxide | — |
| 2931.90.90.25 | Tetrabutyltin | — |
| 2931.90.90.29 | Other | — |
| 2931.90.90.30 | 2-Chlorovinyldichloroarsine | — |
| 2931.90.90.35 | Bis(2-chlorovinyl)chloroarsine | — |
| 2931.90.90.40 | Tris(2-chlorovinyl)arsine | — |
| 2931.90.90.52 | Other | — |
TETRAMETHYL LEAD AND TETRAETHYL LEAD
Census Bureau export classification matching this HTS import code.
