Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
HTS heading 2833: Sulfates; alums; peroxosulfates (persulfates)
28 numbered lines under heading 2833, including 21 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 |
|---|---|---|---|---|---|
| 2833 | Sulfates; alums; peroxosulfates (persulfates): | ||||
| Sodium sulfates: | |||||
| 2833.11 | Disodium sulfate: | ||||
| 2833.11.10.00 | Salt cake | t | Free | Free | |
| 2833.11.50 | Other | 0.4% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 3.6% | |
| 2833.11.50.10 | Anhydrous | t | |||
| 2833.11.50.50 | Other | t | |||
| 2833.19.00.00 | Other | kg | Free | Free | |
| Other sulfates: | |||||
| 2833.21.00.00 | Of magnesium | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 20% |
| 2833.22.00.00 | Of aluminum | kg | Free | 10% | |
| 2833.24.00.00 | Of nickel | kg | 3.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2833.25.00.00 | Of copper | kg, Cu kg | 1.4% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 5% |
| 2833.27.00.00 | Of barium | kg | 0.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 4.2% |
| 2833.29 | Other: | ||||
| 2833.29.10.00 | Of cobalt | kg | 1.4% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 6.5% |
| 2833.29.20.00 | Of iron | kg | Free | Free | |
| 2833.29.30.00 | Of vanadium | kg, V kg | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% |
| 2833.29.40.00 | Of chromium | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2833.29.45.00 | Of zinc | kg | 1.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 8% |
| 2833.29.51 | OtherNote: See 9903.90.08. | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 30% | |
| 2833.29.51.10 | Of manganese | kg | |||
| 2833.29.51.90 | Other | kg | |||
| 2833.30.00.00 | Alums | kg | 1.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2833.40 | Peroxosulfates (persulfates): | ||||
| 2833.40.20.00 | Of sodium | kg | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% |
| 2833.40.60 | Other | 3.1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 2833.40.60.10 | Of potassium | kg | |||
| 2833.40.60.20 | Of ammonium | kg | |||
| 2833.40.60.50 | Other | kg |
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.