HTS 2811
Other inorganic acids and other inorganic oxygen compounds of nonmetals
| Code | Description | Unit | General | Special | Column 2 | Source |
|---|---|---|---|---|---|---|
| Other inorganic acids | ||||||
| 2811.11.00.00 | Hydrogen fluoride (Hydrofluoric acid) | kg | Free | Free | USITC | |
| 2811.12.00.00 | Hydrogen cyanide (hydrocyanic acid) | kg | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
| 2811.19 | Other | USITC | ||||
| 2811.19.10.00 | Arsenic acid | kg | 2.3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 4.9% | USITC |
| 2811.19.30.00 | Hydrobromic acid | kg | Free | 25% | USITC | |
| 2811.19.61 | Other | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC | |
| 2811.19.61.10 | Sulfamic acid | kg | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
| 2811.19.61.90 | Other | kg | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
| Other inorganic oxygen compounds of nonmetals | ||||||
| 2811.21.00.00 | Carbon dioxide | t | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
| 2811.22 | Silicon dioxide | USITC | ||||
| 2811.22.10.00 | Synthetic silica gel | kg | 3.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
| 2811.22.50.00 | Other | kg | Free | Free | USITC | |
| 2811.29 | Other | USITC | ||||
| 2811.29.10.00 | Arsenic trioxide | kg | Free | Free | USITC | |
| 2811.29.20.00 | Selenium dioxide | kg | Free | Free | USITC | |
| 2811.29.30.00 | Sulfur dioxide | kg | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
| 2811.29.50.00 | Other | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | USITC |
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Source: USITC, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20, effective 28 September 2026. Heading 2811 at USITC
Not shown: the additional duties of Chapter 99 (such as Section 301 and Section 232), anti-dumping and countervailing duties, quotas and the legal notes.
This page is general information, not legal advice and not a classification decision. Tariff texts and rates change: check the publisher's current schedule, and ask the customs authority for a binding ruling where the answer matters.