Sulfites; thiosulfates
4 declarable lines
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%.
Products in this heading
- Sodium sulfite
- Sodium bisulfite
- Sodium metabisulfite
- Potassium metabisulfite
- Calcium sulfite
- Sodium thiosulfate
- Ammonium thiosulfate
- Potassium thiosulfate
How to choose the right subheading
- Confirm the chemical is a sulfite or thiosulfate, not a sulfate, sulfide, dithionite or nitrite.
- Identify the cation; sodium compounds take the sodium lines.
- For sulfites, sodium sulfites go in 2832.10.00.00 and other sulfites in 2832.20.00.00.
- For thiosulfates, sodium thiosulfate goes in 2832.30.10.00 and other thiosulfates in 2832.30.50.00.
- Check purity and physical form; single inorganic compounds fit heading 2832, while mixtures or retail preparations may be classified elsewhere.
Often confused with
- Heading 2833Sodium sulfate
It is a sulfate, not a sulfite; heading 2833 covers sulfates.
- Heading 2830Sodium sulfide
It is a sulfide, not a sulfite; heading 2830 covers sulfides.
- Heading 2831Sodium dithionite (sodium hydrosulfite)
It is a dithionite, not a sulfite; heading 2831 covers dithionites and sulfoxylates.
- Heading 2834Sodium nitrite
It is a nitrite, not a sulfite; heading 2834 covers nitrites and nitrates.
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%.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.