US tariff data as of 2026-10-09Tariffs dataset 1.0.0Entry dates 2025-01-01 to 2026-10-09
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Chapter 29 · HTS release 2026HTSRev21

HTS 2931 Other organo-inorganic compounds

Base rates and the additional US duties for imports from the main origins on entry date 2026-10-09, from the HTS Calculator duty engine.

Base rate (column 1 general)
Free to 6.5%
Additional duty, main origins
0–118.5%
Statistical lines
46
Entry date shown
2026-10-09 (dataset 1.0.0)

Additional duties for the main origins

Additional duties on 2026-10-09
OriginAdditional dutyMeasures
China12.5–118.5%Section 232, Section 301
Mexico0–100%Section 232, Section 301
Canada0–100%Section 232, Section 301
Vietnam0–93.5%Section 232, Section 301
Germany0–28.5%Section 232, Section 301

Range of the Chapter 99 duties (percent of customs value) across the lines of this heading. A range means the result differs between lines or depends on facts about the goods; an asterisk marks lines whose duty also depends on a specific (per unit) base rate. Other origins (Japan, South Korea, Taiwan, India, United Kingdom and any other country): in the calculator and the API.

Chapter 99 headings on these lines

  • 9903.04.60 Section 232
  • 9903.04.62 Section 232
  • 9903.04.64 Section 232
  • 9903.04.65 Section 232
  • 9903.04.66 Section 232
  • 9903.04.67 Section 232
  • 9903.04.68 Section 232
  • 9903.04.69 Section 232
  • 9903.05.29 Section 301
  • 9903.05.31 Section 301
  • 9903.05.39 Section 301
  • 9903.05.55 Section 301
  • 9903.05.84 Section 301
  • 9903.05.90 Section 301
  • 9903.05.93 Section 301
  • 9903.05.94 Section 301
  • 9903.88.03 Section 301
  • 9903.88.04 Section 301
  • 9903.88.15 Section 301

Every line, every origin, with citations

This page sums heading 2931 up. The duty for one line, origin and date comes from the duty engine:

  • Base rate plus each Chapter 99 line, in percent and in dollars
  • Citations to the Federal Register, CBP and the USITC, with the quoted text
  • The lines considered and not applied, and why
  • Any origin, any entry date from 2025-01-01 to 2026-10-09
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Lines in this heading

The 46 statistical lines of heading 2931

Each code opens the free calculator for that line on 2026-10-09: base rate, every Chapter 99 line with its citations, and the duty in dollars.

  • 2931.10.00.00Tetramethyl lead and tetraethyl lead
  • 2931.20.00.00Tributyltin compounds
  • 2931.41.00.00Non-halogenated organo-phosphorous derivatives › Dimethyl methylphosphonate
  • 2931.42.00.00Non-halogenated organo-phosphorous derivatives › Dimethyl propylphosphonate
  • 2931.43.00.00Non-halogenated organo-phosphorous derivatives › Diethyl ethylphosphonate
  • 2931.44.00.00Non-halogenated organo-phosphorous derivatives › Methylphosphonic acid
  • 2931.45.00.00Non-halogenated organo-phosphorous derivatives › Salt of methylphosphonic acid and (aminoiminomethyl)urea…
  • 2931.46.00.00Non-halogenated organo-phosphorous derivatives › 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane…
  • 2931.47.00.00Non-halogenated organo-phosphorous derivatives › (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl…
  • 2931.48.00.00Non-halogenated organo-phosphorous derivatives › 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5]…
  • 2931.49.00.05… › Other › O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl)…
  • 2931.49.00.08… › Other › [O-2-(Dialkyl (methyl, ethyl, n-propyl or isopropyl) amino)ethyl] hydrogen alkyl (methyl, ethyl,…
  • 2931.49.00.10… › Other › 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters
  • 2931.49.00.15… › Other › Butyl methylphosphinate
  • 2931.49.00.20… › Other › N-(Phosphonomethyl) glycine (glyphosate) and its salts and esters
  • 2931.49.00.25… › Other › Bis(1-methylpentyl) methylphosphonate
  • 2931.49.00.55… › Other › Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded…
  • 2931.49.00.80… › Other › Other
  • 2931.51.00.00Halogenated organo-phosphorous derivatives › Methylphosphonic dichloride
  • 2931.52.00.00Halogenated organo-phosphorous derivatives › Propylphosphonic dichloride
  • 2931.53.00.00Halogenated organo-phosphorous derivatives › O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl]…
  • 2931.54.00.00Halogenated organo-phosphorous derivatives › Trichlorfon (ISO)
  • 2931.59.00.10… › Other › O-Alkyl (≤ C10, including cycloalkyl) alkyl (methyl, ethyl,n- propyl or isopropyl)…
  • 2931.59.00.15… › Other › Alkyl (methyl, ethyl, n-propyl or isopropyl) phosphonyl difluorides
  • 2931.59.00.20… › Other › O-Isopropyl methylphosphonochloridate
  • 2931.59.00.25… › Other › O-Pinacolyl methylphosphonochloridate
  • 2931.59.00.30… › Other › P-Alkyl (≤ C10, incl. cycloalkyl) N-(1-(dialkyl (≤ C10, incl. cycloalkyl) amino))alkylidene (H or…
  • 2931.59.00.35… › Other › Methyl- bis(diethylamino)methylene)phosphonamidofluoridate
  • 2931.59.00.60… › Other › Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded…
  • 2931.59.00.80… › Other › Other
  • 2931.90.05.00… › Aromatic › Diphenyldichlorosilane; and phenyltrichlorosilane
  • 2931.90.10.00… › Aromatic › 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester
  • 2931.90.15.00… › Aromatic › Sodium tetraphenylboron
  • 2931.90.22.00… › Other › Drugs
  • 2931.90.26.00… › Other › Pesticides
  • 2931.90.30.00… › Other › Products described in additional U.S. note 3 to section VI
  • 2931.90.60.00… › Other › Other
  • 2931.90.70.00… › Other › N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl…
  • 2931.90.90.10… › Other › Organo-silicon compounds
  • 2931.90.90.21… › Organo-tin compounds › Dibutyltin oxide
  • 2931.90.90.25… › Organo-tin compounds › Tetrabutyltin
  • 2931.90.90.29… › Organo-tin compounds › Other
  • 2931.90.90.30… › Other › 2-Chlorovinyldichloroarsine
  • 2931.90.90.35… › Other › Bis(2-chlorovinyl)chloroarsine
  • 2931.90.90.40… › Other › Tris(2-chlorovinyl)arsine
  • 2931.90.90.52… › Other › Other

Recent changes

Between 2025-10-09 and 2026-10-09: the Chapter 99 headings applied changed for all 5 main origins. Dated changes, with their sources: the change list and the Tariff Change Feed.

Scope

We do not classify goods. These pages show reference rates for HTS codes. Choosing the code for an entry is the importer's responsibility, and entries are filed by the importer of record or a licensed customs broker. Duties shown are calculations from public sources, not legal advice.