HTS heading
2811Other inorganic acids and other inorganic oxygen compounds of nonmetals:
Rates as published in 2026 HTS Revision 15, captured 2026-08-13. Source: USITC Harmonized Tariff Schedule.
Current duty rates (12 lines)
| Code | Description | General | Special | Column 2 |
|---|---|---|---|---|
| 2811.11.00.00 | Hydrogen fluoride (Hydrofluoric acid) | Free | — | Free |
| 2811.12.00.00 | Hydrogen cyanide (hydrocyanic acid) | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2811.19.10.00 | Arsenic acid | 2.3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 4.9% |
| 2811.19.30.00 | Hydrobromic acid | Free | — | 25% |
| 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% |
| 2811.21.00.00 | Carbon dioxide | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2811.22.10.00 | Synthetic silica gel | 3.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2811.22.50.00 | Other | Free | — | Free |
| 2811.29.10.00 | Arsenic trioxide | Free | — | Free |
| 2811.29.20.00 | Selenium dioxide | Free | — | Free |
| 2811.29.30.00 | Sulfur dioxide | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2811.29.50.00 | Other | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
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