Analysis
Heading 2931 of the Harmonized Tariff Schedule covers other organo-inorganic compounds. It divides into 17 six-digit subheadings and 25 eight-digit tariff lines, with 46 ten-digit statistical suffixes below them.
The spread of 6.5 percentage points between the cheapest and dearest lines makes misclassification expensive here. The highest rate, 6.5%, applies to 2931.90.10 (4,4'-Diphenylbisphosphonous acid…) and 2931.90.22 (other: drugs).
2 of its 25 lines with a percentage rate are duty-free at the general rate (8%) and 23 are dutiable, from duty-free up to 6.5%. The median line pays 3.7%.
The largest subheadings are 2931.90 (other, 9 lines), 2931.10 (unnamed, 1 line), 2931.20 (unnamed, 1 line) and 2931.41 (unnamed, 1 line).
Its median rate of 3.7% sits at the 34th percentile of the headings in chapter 29.
By Census's concordance, most of its statistical lines are made by All Other Basic Organic Chemical Manufacturing (325199) and Pharmaceutical Preparation Manufacturing (325412). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2931.10.00 | Tetramethyl lead and tetraethyl lead | 3.7% |
| 2931.20.00 | Tributyltin compounds | 3.7% |
| 2931.41.00 | Dimethyl methylphosphonate | 3.7% |
| 2931.42.00 | Dimethyl propylphosphonate | 3.7% |
| 2931.43.00 | Diethyl ethylphosphonate | 3.7% |
| 2931.44.00 | Methylphosphonic acid | 3.7% |
| 2931.45.00 | Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1) | 3.7% |
| 2931.46.00 | 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide | 3.7% |
| 2931.47.00 | (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate | 3.7% |
| 2931.48.00 | 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide | 3.7% |
| 2931.49.00 | Non-halogenated organo-phosphorous derivatives: other | 3.7% |
| 2931.51.00 | Methylphosphonic dichloride | 3.7% |
| 2931.52.00 | Propylphosphonic dichloride | 3.7% |
| 2931.53.00 | O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate | 3.7% |
| 2931.54.00 | Halogenated organo-phosphorous derivatives: trichlorfon (ISO) | 3.7% |
| 2931.59.00 | Halogenated organo-phosphorous derivatives: other | 3.7% |
| 2931.90.05 | Diphenyldichlorosilane; and phenyltrichlorosilane | Free |
| 2931.90.10 | 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester | 6.5% |
| 2931.90.15 | Sodium tetraphenylboron | 5.8% |
| 2931.90.22 | Other: drugs | 6.5% |
| 2931.90.26 | Other: pesticides | 6.5% |
| 2931.90.30 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2931.90.60 | Other: other | 6.5% |
| 2931.90.70 | N,N'-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: other | 3.7% |