HTS heading 2931: Other organo-inorganic compounds
Heading 2931 of the US Harmonized Tariff Schedule covers Other organo-inorganic compounds. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.
Heading 2931 at a glance
- 25 rated tariff lines; 2 duty-free at the general (MFN) rate.
- Ad valorem general rates from 3.7% to 6.5%.
- Section 301 (products of China): 12 of 25 lines on a list in effect (List 3, List 4A).
Goods named in this heading (official line texts): Tetramethyl lead and tetraethyl lead, Tributyltin compounds, Dimethyl methylphosphonate, Dimethyl propylphosphonate, Diethyl ethylphosphonate, Methylphosphonic acid, Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1), 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide, (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate, 3,9-Dimethyl-2,4,8.
Subheadings (6-digit)
- 2931.10: Tetramethyl lead and tetraethyl lead (1 line)
- 2931.20: Other organo-inorganic compounds: Tributyltin compounds (1 line)
- 2931.41: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.42: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.43: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.44: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.45: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.46: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.47: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.48: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.49: Non-halogenated organo-phosphorous derivatives (1 line)
- 2931.51: Halogenated organo-phosphorous derivatives (1 line)
- 2931.52: Halogenated organo-phosphorous derivatives (1 line)
- 2931.53: Halogenated organo-phosphorous derivatives (1 line)
- 2931.54: Halogenated organo-phosphorous derivatives (1 line)
- 2931.59: Halogenated organo-phosphorous derivatives (1 line)
- 2931.90: Aromatic (9 lines)
All tariff lines in heading 2931
| Line | Description | General | Section 301 (China) | Exclusions |
|---|---|---|---|---|
| 2931.10.00 | Tetramethyl lead and tetraethyl lead | 3.7% | List 3 +25% | |
| 2931.20.00 | Other organo-inorganic compounds: Tributyltin compounds | 3.7% | List 3 +25% | |
| 2931.41.00 | Non-halogenated organo-phosphorous derivatives: Dimethyl methylphosphonate | 3.7% | List 3 +25% | |
| 2931.42.00 | Non-halogenated organo-phosphorous derivatives: Dimethyl propylphosphonate | 3.7% | List 3 +25% | |
| 2931.43.00 | Non-halogenated organo-phosphorous derivatives: Diethyl ethylphosphonate | 3.7% | List 4A +7.5% | |
| 2931.44.00 | Non-halogenated organo-phosphorous derivatives: Methylphosphonic acid | 3.7% | none | |
| 2931.45.00 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1) | 3.7% | List 3 +25% | |
| 2931.46.00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide | 3.7% | List 3 +25% | |
| 2931.47.00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate | 3.7% | List 3 +25% | |
| 2931.48.00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | 3.7% | none | |
| 2931.49.00 | Non-halogenated organo-phosphorous derivatives: Other | 3.7% | List 4B (suspended, no extra duty) | |
| 2931.51.00 | Halogenated organo-phosphorous derivatives: Methylphosphonic dichloride | 3.7% | none | |
| 2931.52.00 | Halogenated organo-phosphorous derivatives: Propylphosphonic dichloride | 3.7% | none | |
| 2931.53.00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate | 3.7% | none | |
| 2931.54.00 | Halogenated organo-phosphorous derivatives: Trichlorfon (ISO) | 3.7% | none | |
| 2931.59.00 | Halogenated organo-phosphorous derivatives: Other | 3.7% | none | |
| 2931.90.05 | Diphenyldichlorosilane; and phenyltrichlorosilane | Free | List 4B (suspended, no extra duty) | |
| 2931.90.10 | 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester | 6.5% | none | |
| 2931.90.15 | Aromatic: Sodium tetraphenylboron | 5.8% | List 4B (suspended, no extra duty) | |
| 2931.90.22 | Other: Drugs | 6.5% | List 3 +25% | |
| 2931.90.26 | Other: Pesticides | 6.5% | List 4B (suspended, no extra duty) | |
| 2931.90.30 | Products described in additional U.S. note 3 to section VI | 6.5% | List 3 +25% | |
| 2931.90.60 | Other: Other | 6.5% | List 3 +25% | |
| 2931.90.70 | N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl es… | Free | List 3 +25% | |
| 2931.90.90 | Other: Other | 3.7% | List 4B (suspended, no extra duty) |
All of chapter 29 · Chapter 29 rate summary · HTS lookup
General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.
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