What is the US duty on copper carbonate from China?
The USITC extract imported on 25 September 2026 does not use the words copper carbonate, cupric carbonate, or cuprous carbonate. This page does not state a rate for those names.
Cobalt carbonates, HTS 2836.99.10.00, stores 4.2 percent general and 30 percent other. That description is not copper carbonate, and this page does not copy those numbers onto the missing name. Heading 2836 stores no rate. The anti-dumping file dated 16 May 2026 stores heading 2836 on A-570-880. The product text is Barium carbonate, not copper. This file does not store a Section 301 percent for a name it does not list. This page is the United States file only. It does not state an Australian duty or a ChAFTA percent.
What the extract stores instead
Source: USITC Harmonized Tariff Schedule export, updated_at 2026-09-25T11:27:06.251Z, from hts.usitc.gov exportList chapters 28 to 39. The public schedule is at hts.usitc.gov. A search of the descriptions does not find copper carbonate, basic copper carbonate, cupric carbonate, or cuprous carbonate. Confirm the live schedule before you quote. Section 301 stays on the USTR Section 301 page.
| HTS | Description in the file | General rate | Additional duties |
|---|---|---|---|
| 2836 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate | blank | blank |
| 2836.99 | Other | blank | blank |
| 2836.99.10.00 | Cobalt carbonates | 4.2% | blank |
| 2836.99.50 | Other | 3.7% | blank |
| 2836.60.00.00 | Barium carbonate | 2.3% | blank |
| 2836.50.00.00 | Calcium carbonate | Free | blank |
The other column is not shown. It does not apply to goods of China.
The heading stores no rate. HTS 2836.99 stores no rate. Cobalt carbonates stores 4.2 percent and 30 percent, unit kg, and has no footnote. Its special-rate text is Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG). That text does not name China. This page does not use 4.2 percent or 30 percent as a copper carbonate rate, and it does not treat that Free text as a China total. The answer for the cobalt line is on US duty on cobalt acetate from China, which names cobalt carbonates as a different product.
HTS 2836.99.50 is described only as Other. It stores 3.7 percent general and 25 percent other. The other column footnotes See 9903.90.08. Heading 9903 is not in the extract, so this page does not price the note, and it does not call the Other line copper carbonate. Zirconium carbonates, HTS 2836.99.50.10, stores no rate. The suffix described only as Other, HTS 2836.99.50.50, stores no rate. A blank is not Free and not zero.
Barium carbonate, HTS 2836.60.00.00, stores 2.3 percent general and 8.4 percent other. Its other column has the same 9903.90.08 note. That note is not priced here, and 2.3 percent is not copied onto the missing name. The answer is on US duty on barium carbonate from China. Calcium carbonate stores Free and 25 percent, with no footnote. This page does not copy Free onto copper carbonate, and it does not treat Free as a China total.
Copper oxide is a different heading. Cupric oxide, HTS 2825.50.10.00, stores 4.3 percent and 31 percent. That rate is not a carbonate rate. The answer is on US duty on copper oxide from China.
The anti-dumping file, updated_at 2026-05-16T23:32:23.566Z, stores heading 2836 on one row. The case is A-570-880, the product text is Barium carbonate, and duty_rate_percent is null. That row is not copper carbonate. The file does not list a countervailing case on heading 2836. The only copper product text in the file is seamless refined copper pipe and tube, A-570-964, heading 7411. That row also stores no cash-deposit percent, and it is not this name. A missing product is not a finding that no order exists. Check ACCESS before you treat the gap as a clearance.
A list of codes, three free and up to 50 on Pro, is on the China duty list. Subscribe for the longer list and the copyable report. A rate there is shown only when the file stores it.
Frequently asked
What is the US duty on copper carbonate from China?
The USITC extract imported on 25 September 2026 does not use the words copper carbonate, cupric carbonate, or cuprous carbonate. This page does not state a rate for those names. Cobalt carbonates, HTS 2836.99.10.00, stores 4.2 percent general and 30 percent other. That line is not copper carbonate. Heading 2836 in the anti-dumping file is A-570-880, barium carbonate, not copper. This page does not add a Section 301 percent.
Is cobalt carbonate the copper line?
No. The file stores Cobalt carbonates, plural, on HTS 2836.99.10.00. It does not store copper carbonate. Heading 2836 stores no rate. HTS 2836.99, described as Other, stores no rate. This page does not paste 4.2 percent or 30 percent onto the missing name.
Does the Other carbonate line cover copper?
The file does not say so. HTS 2836.99.50 is described only as Other. It stores 3.7 percent general and 25 percent other, and its other column footnotes See 9903.90.08. This page does not call that line copper carbonate and does not price the note. The zirconium carbonate suffix stores no rate.
Is the barium carbonate case a copper case?
No. The only heading 2836 row is anti-dumping case A-570-880. The product text is Barium carbonate. duty_rate_percent is null. The copper product in the file is seamless refined copper pipe and tube, A-570-964, heading 7411. That is not copper carbonate, and it stores no cash-deposit percent.
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