HTS 2931: Other organo-inorganic compounds
Heading 2931 of the Harmonized Tariff Schedule of the United States has 46 ten-digit statistical numbers. A US entry line in ACE needs the full ten digits, with the quantity in kg.
Check additional duties before you file
- If the goods are made in China, check Section 301 duties under HTSUS heading 9903.88, on top of the general rate, and any exclusions.
| HTSUS number | Description | Unit | General rate |
|---|---|---|---|
| 2931.10.00.00 | Tetramethyl lead and tetraethyl lead | kg | 3.7% |
| 2931.20.00.00 | Tributyltin compounds | kg | 3.7% |
| Non-halogenated organo-phosphorous derivatives: | |||
| 2931.41.00.00 | Dimethyl methylphosphonate | kg | 3.7% |
| 2931.42.00.00 | Dimethyl propylphosphonate | kg | 3.7% |
| 2931.43.00.00 | Diethyl ethylphosphonate | kg | 3.7% |
| 2931.44.00.00 | Methylphosphonic acid | kg | 3.7% |
| 2931.45.00.00 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1) | kg | 3.7% |
| 2931.46.00.00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide | kg | 3.7% |
| 2931.47.00.00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate | kg | 3.7% |
| 2931.48.00.00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | kg | 3.7% |
| 2931.49.00 | Other | 3.7% | |
| 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% |
| 2931.52.00.00 | Propylphosphonic dichloride | kg | 3.7% |
| 2931.53.00.00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate | kg | 3.7% |
| 2931.54.00.00 | Trichlorfon (ISO) | kg | 3.7% |
| 2931.59.00 | Other | 3.7% | |
| 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 |
| 2931.90.10.00 | 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester | kg | 6.5% |
| 2931.90.15.00 | Sodium tetraphenylboron | kg | 5.8% |
| Other: | |||
| 2931.90.22.00 | Drugs | kg | 6.5% |
| 2931.90.26.00 | Pesticides | kg | 6.5% |
| Other: | |||
| 2931.90.30.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2931.90.60.00 | Other | kg | 6.5% |
| 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 |
| 2931.90.90 | Other | 3.7% | |
| 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 |
Common paperwork mistakes with heading 2931
- The invoice shows the exporter's own code. Only the first six digits are shared worldwide; the US number has ten. Check every line against the list above.
- The quantity is in the wrong unit. These lines report quantity in kg, which may not match the invoice's cartons, sets or pieces.
- The packing list and the bill of lading disagree on cartons or gross weight, which can lead to holds and exams.
- The manufacturer's name and address are missing, so the MID cannot be built from the documents.
Look up any ten-digit number, or read the guide to invoice and packing list mismatches.
Check the whole shipment, not one number
FreightProof reads the invoice, packing list and bill of lading together, validates every HTS number and container, builds the MIDs and flags what does not match — in about two minutes.
Data: Harmonized Tariff Schedule of the United States, US International Trade Commission. Rates are for information only.