Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
HTS heading 2811: Other inorganic acids and other inorganic oxygen compounds of nonmetals
18 numbered lines under heading 2811, including 13 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 2811 | Other inorganic acids and other inorganic oxygen compounds of nonmetals: | ||||
| Other inorganic acids: | |||||
| 2811.11.00.00 | Hydrogen fluoride (Hydrofluoric acid) | kg | Free | Free | |
| 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% |
| 2811.19 | Other: | ||||
| 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% |
| 2811.19.30.00 | Hydrobromic acid | kg | 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% | |
| 2811.19.61.10 | Sulfamic acid | kg | |||
| 2811.19.61.90 | Other | kg | |||
| Other inorganic oxygen compounds of nonmetals: | |||||
| 2811.21.00.00 | Carbon dioxideNote: See 9903.90.08. | t | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2811.22 | Silicon dioxide: | ||||
| 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% |
| 2811.22.50.00 | Other | kg | Free | Free | |
| 2811.29 | Other: | ||||
| 2811.29.10.00 | Arsenic trioxideNote: See 9903.90.08. | kg | Free | Free | |
| 2811.29.20.00 | Selenium dioxide | kg | Free | Free | |
| 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% |
| 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% |
| III. HALOGEN OR SULFUR COMPOUNDS OF NONMETALS |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
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Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.