Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
HTS heading 2836: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
20 numbered lines under heading 2836, including 15 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 2836 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate: | ||||
| 2836.20.00.00 | Disodium carbonateNote: See 9903.90.08. | kg | 1.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 8.5% |
| 2836.30.00.00 | Sodium hydrogencarbonate (Sodium bicarbonate) | kg | Free | Free | |
| 2836.40 | Potassium carbonates: | ||||
| 2836.40.10.00 | Dipotassium carbonate | kg | 1.9% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 6% |
| 2836.40.20.00 | Potassium hydrogencarbonate (Potassium bicarbonate) | kg | 1.3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 4.8% |
| 2836.50.00.00 | Calcium carbonate | kg | Free | 25% | |
| 2836.60.00.00 | Barium carbonateNote: See 9903.90.08. | kg | 2.3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 8.4% |
| Other: | |||||
| 2836.91.00 | Lithium carbonates | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2836.91.00.10 | U.S.P. grade | kg | |||
| 2836.91.00.50 | Other | kg | |||
| 2836.92.00.00 | Strontium carbonate | kg | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2836.99 | Other: | ||||
| 2836.99.10.00 | Cobalt carbonates | kg | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 30% |
| 2836.99.20.00 | Bismuth carbonate | kg | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% |
| 2836.99.30.00 | Commercial ammonium carbonate and other ammonium carbonates | kg | 1.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 16% |
| 2836.99.40.00 | Lead carbonates | kg | 0.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 4.5% |
| 2836.99.50 | OtherNote: See 9903.90.08. | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2836.99.50.10 | Zirconium carbonates | kg | |||
| 2836.99.50.50 | Other | kg |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
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Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.