Import duty / Chapter 28 / Heading 2811
Heading 2811 covers 6 tariff lines in LoadLoom's table; 3 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 |
|---|---|---|---|---|
| 2811.11 | Hydrogen fluoride (hydrofluoric acid) | Free | Free | Free with certificate |
| 2811.12 | Hydrogen cyanide (hydrocyanic acid) | 4.2% | Free | Free with certificate |
| 2811.19 | Inorganic acids; other than hydrogen fluoride | 2.3% | Free | Not eligible |
| 2811.21 | Carbon dioxide | 3.7% | Free | Free with certificate |
| 2811.22 | Silicon dioxide | 3.7% | Free | Not eligible |
| 2811.29 | Inorganic oxygen compounds; of non-metals, n.e.c. in item no. 2811.2 | Free | 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
