HTS heading 2811
Other inorganic acids and other inorganic oxygen compounds of nonmetals — 18 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 2811 | Other inorganic acids and other inorganic oxygen compounds of nonmetals + Ch. 99 | not stated | — |
| 2811.11.00.00 | Hydrogen fluoride (Hydrofluoric acid) + Ch. 99 | Free | kg |
| 2811.12.00.00 | Hydrogen cyanide (hydrocyanic acid) + Ch. 99 | 4.2% | kg |
| 2811.19 | Other + Ch. 99 | not stated | — |
| 2811.19.10.00 | Arsenic acid + Ch. 99 | 2.3% | kg |
| 2811.19.30.00 | Hydrobromic acid + Ch. 99 | Free | kg |
| 2811.19.61 | Other + Ch. 99 | 4.2% | — |
| 2811.19.61.10 | Sulfamic acid + Ch. 99 | 4.2% (inherited from 2811.19.61) | kg |
| 2811.19.61.90 | Other + Ch. 99 | 4.2% (inherited from 2811.19.61) | kg |
| 2811.21.00.00 | Carbon dioxide + Ch. 99 | 3.7% | t |
| 2811.22 | Silicon dioxide + Ch. 99 | not stated | — |
| 2811.22.10.00 | Synthetic silica gel + Ch. 99 | 3.7% | kg |
| 2811.22.50.00 | Other + Ch. 99 | Free | kg |
| 2811.29 | Other + Ch. 99 | not stated | — |
| 2811.29.10.00 | Arsenic trioxide + Ch. 99 | Free | kg |
| 2811.29.20.00 | Selenium dioxide + Ch. 99 | Free | kg |
| 2811.29.30.00 | Sulfur dioxide + Ch. 99 | 4.2% | kg |
| 2811.29.50.00 | Other + Ch. 99 | 3.7% | kg |
2 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.
Additional duties may apply
18 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.