Heading 2832: Sulfites; thiosulfates
Every line of heading 2832 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.
Sulfites; thiosulfates
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 |
|---|---|---|
| 2832.10.00.00 | Sodium sulfites | 1.5% |
| 2832.20.00.00 | Other sulfites | 3.1% |
| 2832.30 | Thiosulfates: | |
| 2832.30.10.00 | Sodium thiosulfate | 1.5% |
| 2832.30.50.00 | Other | 3.1% |
Exporting this product from the U.S.?
Exports are reported with Schedule B numbers. Heading 2832 has 3 of them. Schedule B lookup →
- 2832.10.0000SODIUM SULFITES
- 2832.20.0000OTHER SULFITES, EXCEPT SODIUM SULFITES, NESOI
- 2832.30.0000THIOSULFATES
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.
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