Heading 2931
HTS code 2931 — Other organo-inorganic compounds
- Chapter
- 29 — Organic chemicals
- Tariff lines
- 46
- General duty
- General duty rates from 3.7% to 6.5%, with 2 duty-free lines
Tariff lines under heading 2931
Full 10-digit codes with their general (MFN) duty rates. The correct line depends on the product's material, construction, and use.
| HTS code | Description | General rate | Unit |
|---|---|---|---|
| 2931.10.0000 | Tetramethyl lead and tetraethyl lead (Other organo-inorganic compounds) | 3.7% | kg |
| 2931.20.0000 | Tributyltin compounds (Other organo-inorganic compounds) | 3.7% | kg |
| 2931.41.0000 | Dimethyl methylphosphonate (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.42.0000 | Dimethyl propylphosphonate (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.43.0000 | Diethyl ethylphosphonate (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.44.0000 | Methylphosphonic acid (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.45.0000 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1) (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.46.0000 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.47.0000 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.48.0000 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.49.0005 | O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.49.0008 | [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 (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.49.0010 | 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.49.0015 | Butyl methylphosphinate (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.49.0020 | N-(Phosphonomethyl) glycine (glyphosate) and its salts and esters (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.49.0025 | Bis(1-methylpentyl) methylphosphonate (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.49.0055 | Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other > Other) | 3.7% | kg |
| 2931.49.0080 | Other (Other organo-inorganic compounds > Non-halogenated organo-phosphorous derivatives > Other > Other) | 3.7% | kg |
| 2931.51.0000 | Methylphosphonic dichloride (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.52.0000 | Propylphosphonic dichloride (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.53.0000 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.54.0000 | Trichlorfon (ISO) (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives) | 3.7% | kg |
| 2931.59.0010 | O-Alkyl (≤ C10, including cycloalkyl) alkyl (methyl, ethyl,n- propyl or isopropyl) phosphonofluoridates (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0015 | Alkyl (methyl, ethyl, n-propyl or isopropyl) phosphonyl difluorides (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0020 | O-Isopropyl methylphosphonochloridate (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0025 | O-Pinacolyl methylphosphonochloridate (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0030 | 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 (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0035 | Methyl- bis(diethylamino)methylene)phosphonamidofluoridate (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0060 | Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.59.0080 | Other (Other organo-inorganic compounds > Halogenated organo-phosphorous derivatives > Other) | 3.7% | kg |
| 2931.90.0500 | Diphenyldichlorosilane; and phenyltrichlorosilane (Other organo-inorganic compounds > Other > Aromatic) | Free | kg |
| 2931.90.1000 | 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester (Other organo-inorganic compounds > Other > Aromatic) | 6.5% | kg |
| 2931.90.1500 | Sodium tetraphenylboron (Other organo-inorganic compounds > Other > Aromatic) | 5.8% | kg |
| 2931.90.2200 | Drugs (Other organo-inorganic compounds > Other > Aromatic > Other) | 6.5% | kg |
| 2931.90.2600 | Pesticides (Other organo-inorganic compounds > Other > Aromatic > Other) | 6.5% | kg |
| 2931.90.3000 | Products described in additional U.S. note 3 to section VI (Other organo-inorganic compounds > Other > Aromatic > Other > Other) | 6.5% | kg |
| 2931.90.6000 | Other (Other organo-inorganic compounds > Other > Aromatic > Other > Other) | 6.5% | kg |
| 2931.90.7000 | N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts (Other organo-inorganic compounds > Other > Other) | Free | kg |
| 2931.90.9010 | Organo-silicon compounds (Other organo-inorganic compounds > Other > Other > Other) | 3.7% | kg |
| 2931.90.9021 | Dibutyltin oxide (Other organo-inorganic compounds > Other > Other > Other > Organo-tin compounds) | 3.7% | kg |
| 2931.90.9025 | Tetrabutyltin (Other organo-inorganic compounds > Other > Other > Other > Organo-tin compounds) | 3.7% | kg |
| 2931.90.9029 | Other (Other organo-inorganic compounds > Other > Other > Other > Organo-tin compounds) | 3.7% | kg |
| 2931.90.9030 | 2-Chlorovinyldichloroarsine (Other organo-inorganic compounds > Other > Other > Other) | 3.7% | kg |
| 2931.90.9035 | Bis(2-chlorovinyl)chloroarsine (Other organo-inorganic compounds > Other > Other > Other) | 3.7% | kg |
| 2931.90.9040 | Tris(2-chlorovinyl)arsine (Other organo-inorganic compounds > Other > Other > Other) | 3.7% | kg |
| 2931.90.9052 | Other (Other organo-inorganic compounds > Other > Other > Other) | 3.7% | kg |
Documents required to import under 2931
Customs paperwork typically required to import these goods into the United States. Conditional items depend on shipment value, transport mode, or origin.
- Commercial InvoiceRequired
- Packing ListRequired
- Bill of Lading / Airway BillRequired
- CBP Entry Summary (7501)Required
Prepared and filed by your customs broker
- CBP Entry / Release (3461)Required
Prepared and filed by your customs broker
- Customs Bond (CBP 301)Conditional
Required for formal entries — generally shipments valued over $2,500
Single-entry or continuous bond, obtained through your broker or a surety
- Importer Security Filing (ISF "10+2")Conditional
Required for ocean freight only
Filed electronically at least 24 hours before loading at the foreign port
- Importer ID Input Record (CBP 5106)Conditional
Required to establish or update your importer-of-record number with CBP
One-time setup for a new importer; not filed per shipment
- Entry Manifest (CBP 7533)Conditional
Alternative to the 3461 for informal, low-value, or contiguous-country entries
- Safety Data Sheet (SDS/MSDS)Required
- EPA TSCA CertificationConditional
Required for chemical substances regulated under TSCA
- EPA Notice of Arrival (Form 3540-1)Conditional
Required for pesticides and devices (typically Ch. 38)
Common questions
- What is HTS code 2931?
- HTS heading 2931 covers other organo-inorganic compounds. It sits in Chapter 29 (organic chemicals) of the US Harmonized Tariff Schedule and contains 46 tariff lines.
- What is the duty rate for HTS 2931?
- General duty rates from 3.7% to 6.5%, with 2 duty-free lines. The general rate applies to most-favoured-nation trading partners; goods from countries with a free trade agreement may qualify for a reduced or duty-free special rate.
- How many digits does a full HTS code have?
- US import entries require the full 10-digit HTS code. Heading 2931 is the first four digits — the remaining six narrow it down to the specific product, which is what determines the duty rate you actually pay.
Related headings in Chapter 29
- 2901Acyclic hydrocarbons
- 2902Cyclic hydrocarbons
- 2903Halogenated derivatives of hydrocarbons
- 2904Sulfonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated
- 2905Acyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives
- 2906Cyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives
- 2907Phenols; phenol-alcohols
- 2908Halogenated, sulfonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols