From Chapter 28: Chapter 28
| HTS Code | Description | General Duty |
|---|---|---|
| 2836200000 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate Disodium carbonate | 1.2% |
| 2836300000 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate Sodium hydrogencarbonate (Sodium bicarbonate) | Free |
| 2836401000 | Potassium carbonates Dipotassium carbonate | 1.9% |
| 2836402000 | Potassium carbonates Potassium hydrogencarbonate (Potassium bicarbonate) | 1.3% |
| 2836500000 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate Calcium carbonate | Free |
| 2836600000 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate Barium carbonate | 2.3% |
| 2836910000 | Other Lithium carbonates | 3.7% |
| 2836910010 | Lithium carbonates U.S.P. grade | 3.7% |
| 2836910050 | Lithium carbonates Other | 3.7% |
| 2836920000 | Other Strontium carbonate | 4.2% |
| 2836991000 | Other Cobalt carbonates | 4.2% |
| 2836992000 | Other Bismuth carbonate | 5.5% |
| 2836993000 | Other Commercial ammonium carbonate and other ammonium carbonates | 1.7% |
| 2836994000 | Other Lead carbonates | 0.5% |
| 2836995000 | Other Other | 3.7% |
| 2836995010 | Other Zirconium carbonates | |
| 2836995050 | Other |