Import duty / Chapter 28 / Heading 2836
Heading 2836 covers 8 tariff lines in LoadLoom's table; 6 of them clear duty-free under USMCA for goods made in Canada, the US or Mexico. Published US and Canadian rates below, verified October 2026. Pick the line that matches your goods for the worked example and border steps.
| HS code | Goods | US duty | Canada duty | USMCA |
|---|---|---|---|---|
| 2836.20 | Carbonates; disodium carbonate | 1.2% | Free | Free with certificate |
| 2836.30 | Carbonates; sodium hydrogen carbonate (sodium bicarbonate) | Free | Free | Free with certificate |
| 2836.40 | Carbonates; potassium carbonate | 1.9% | Free | Not eligible |
| 2836.50 | Carbonates; calcium carbonate | Free | Free | Free with certificate |
| 2836.60 | Carbonates; barium carbonate | 2.3% | Free | Free with certificate |
| 2836.91 | Carbonates; lithium carbonate | 3.7% | Free | Free with certificate |
| 2836.92 | Carbonates; strontium carbonate | 4.2% | Free | Free with certificate |
| 2836.99 | Carbonates; n.e.c. in heading no. 2836 and other than lithium or strontium | 4.2% | Free | Not eligible |
This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.
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Chapter 28: Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes · Every chapter
