HTSUS, United States
2832.30.10.00
Sulfites; thiosulfates / Thiosulfates / Sodium thiosulfate
Classification path
- Sulfites; thiosulfates
- Thiosulfates
- Sodium thiosulfate
Rates of duty
- General (MFN)
- 1.5%
- Column 2Cuba, North Korea, Russia, Belarus
- 4.5%
- Unit of quantity
- kg
Trade agreement rates
FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA
Related lines in heading 2832
About heading 2832
Sulfites; thiosulfates
Heading 2832 covers inorganic sulfites and thiosulfates. It splits sodium sulfites from other sulfites, and sodium thiosulfate from other thiosulfates. The listed lines carry general (MFN) rates from 1.5% to 3.1%.
Full guide to heading 2832Products in this heading
- Sodium sulfite
- Sodium bisulfite
- Sodium metabisulfite
- Potassium metabisulfite
- Calcium sulfite
- Sodium thiosulfate
- Ammonium thiosulfate
- Potassium thiosulfate
Frequently asked questions
What is the HTS code for sodium thiosulfate?
Sodium thiosulfate is classified under 2832.30.10.00, with a general (MFN) rate of 1.5%.
What is the duty on sodium sulfite?
Sodium sulfite falls under 2832.10.00.00, and the general (MFN) rate is 1.5%.
How do I classify ammonium thiosulfate?
Ammonium thiosulfate is an other thiosulfate, so it goes under 2832.30.50.00; the general (MFN) rate is 3.1%.
Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.