Heading 2833: Sulfates; alums; peroxosulfates (persulfates)
Every line of heading 2833 in the U.S. Harmonized Tariff Schedule, with its general (column 1) duty rate. Open a code for the landed cost calculator, trade agreement rates and email alerts if the rate changes.
Sulfates; alums; peroxosulfates (persulfates)
Chapter 28: Inorganic chemicals. Schedule checked on November 8, 2026.
Not always the total: additional chapter 99 duties (such as Section 232 or Section 301), antidumping or countervailing duties may apply depending on the country of origin. See recent chapter 99 changes →
Tariff lines
| HTS code | Official description | General rate |
|---|---|---|
| 2833.11 | Disodium sulfate: | |
| 2833.11.10.00 | Salt cake | Free |
| 2833.11.50 | Other | 0.4% |
| 2833.11.50.10 | Anhydrous | |
| 2833.11.50.50 | Other | |
| 2833.19.00.00 | Other | Free |
| 2833.21.00.00 | Of magnesium | 3.7% |
| 2833.22.00.00 | Of aluminum | Free |
| 2833.24.00.00 | Of nickel | 3.2% |
| 2833.25.00.00 | Of copper | 1.4% |
| 2833.27.00.00 | Of barium | 0.6% |
| 2833.29 | Other: | |
| 2833.29.10.00 | Of cobalt | 1.4% |
| 2833.29.20.00 | Of iron | Free |
| 2833.29.30.00 | Of vanadium | 5.5% |
| 2833.29.40.00 | Of chromium | 3.7% |
| 2833.29.45.00 | Of zinc | 1.6% |
| 2833.29.51 | Other | 3.7% |
| 2833.29.51.10 | Of manganese | |
| 2833.29.51.90 | Other | |
| 2833.30.00.00 | Alums | 1.6% |
| 2833.40 | Peroxosulfates (persulfates): | |
| 2833.40.20.00 | Of sodium | 3.7% |
| 2833.40.60 | Other | 3.1% |
| 2833.40.60.10 | Of potassium | |
| 2833.40.60.20 | Of ammonium | |
| 2833.40.60.50 | Other |
Exporting this product from the U.S.?
Exports are reported with Schedule B numbers. Heading 2833 has 13 of them; the first 12 are below. Schedule B lookup →
- 2833.11.1000SALT CAKE OF DISODIUM SULFATE
- 2833.11.5000DISODIUM SULFATE, EXCEPT SALT CAKE, NESOI
- 2833.19.0000SODIUM SULFATES, EXCEPT DISODIUM SULFATES, NESOI
- 2833.21.0000MAGNESIUM SULFATE
- 2833.22.0000ALUMINUM SULFATE
- 2833.24.0000NICKEL SULFATE
- 2833.25.0000COPPER SULFATE
- 2833.27.0000BARIUM SULFATE
- 2833.29.4000CHROMIUM SULFATE
- 2833.29.4500ZINC SULFATE
- 2833.29.9100OTHER SULFATES, NESOI (EXCLUDING CHROMIUM & ZINC)
- 2833.30.0000ALUMS
Source: U.S. International Trade Commission, Harmonized Tariff Schedule; Schedule B: U.S. Census Bureau. Information only, not legal or customs advice; U.S. Customs and Border Protection decides the classification and the duty. Confirm with a licensed customs broker before you ship.
Buying these products from the U.S.?
Tell us what you need and we will find U.S. manufacturers who can quote you. Free, no account needed.