HTS heading 2836
Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate — 20 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 2836 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate + Ch. 99 | not stated | — |
| 2836.20.00.00 | Disodium carbonate + Ch. 99 | 1.2% | kg |
| 2836.30.00.00 | Sodium hydrogencarbonate (Sodium bicarbonate) + Ch. 99 | Free | kg |
| 2836.40 | Potassium carbonates + Ch. 99 | not stated | — |
| 2836.40.10.00 | Dipotassium carbonate + Ch. 99 | 1.9% | kg |
| 2836.40.20.00 | Potassium hydrogencarbonate (Potassium bicarbonate) + Ch. 99 | 1.3% | kg |
| 2836.50.00.00 | Calcium carbonate + Ch. 99 | Free | kg |
| 2836.60.00.00 | Barium carbonate + Ch. 99 | 2.3% | kg |
| 2836.91.00 | Lithium carbonates + Ch. 99 | 3.7% | — |
| 2836.91.00.10 | U.S.P. grade + Ch. 99 | 3.7% (inherited from 2836.91.00) | kg |
| 2836.91.00.50 | Other + Ch. 99 | 3.7% (inherited from 2836.91.00) | kg |
| 2836.92.00.00 | Strontium carbonate + Ch. 99 | 4.2% | kg |
| 2836.99 | Other + Ch. 99 | not stated | — |
| 2836.99.10.00 | Cobalt carbonates + Ch. 99 | 4.2% | kg |
| 2836.99.20.00 | Bismuth carbonate + Ch. 99 | 5.5% | kg |
| 2836.99.30.00 | Commercial ammonium carbonate and other ammonium carbonates + Ch. 99 | 1.7% | kg |
| 2836.99.40.00 | Lead carbonates + Ch. 99 | 0.5% | kg |
| 2836.99.50 | Other + Ch. 99 | 3.7% | — |
| 2836.99.50.10 | Zirconium carbonates + Ch. 99 | 3.7% (inherited from 2836.99.50) | kg |
| 2836.99.50.50 | Other + Ch. 99 | 3.7% (inherited from 2836.99.50) | kg |
4 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
20 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.