HTS Browser / Section VI — Chemical industry products / Chapter 28 / Heading 2832 / 2832
HTS 2832 Chapter 28 Section VI Synced Apr 28, 2026

Sulfites; thiosulfates:

Sulfites; thiosulfates:

Base HTS duty
Column 1 General
Effective (China)
15%
Ch. 99
Stacked measures
1
at China
Last change
2 months
Ch. 99 15.0%

What this covers

Sulfites and thiosulfates are inorganic salts used as food preservatives, bleaching agents, and industrial chemicals.

potassium sulfite sodium thiosulfate sulfite preservative thiosulfate bleaching agent
Duty stack · origin china

How the 15.0% is built.

0%3.8%7.7%11.5%15.4%
122 · 15.0%
Section 122
All origins except · 9903.01.80
+15.00%
MPF (merchandise processing)
0.3464% · min $31.67 / max $614.35
+0.35%
Effective ad valorem duty (excl. fees)
15.00%
Stacking order
  1. 1
    Apply base HTS rate
    Column 1 General (MFN) or Special (FTA)
  2. 2
    Add Section 301 (if origin qualifies)
    Chapter 99 subheading layered on
  3. 3
    Add IEEPA / 232 surcharges
    Country-scoped emergency measures
  4. 4
    Add MPF & HMF fees
    Applied to entered value

You may also consider

  • 2832.00.00

    Sulfites and thiosulfates, parent heading for this product family.

  • 2831.00.00

    Sulfates, adjacent classification.

Origin matters

Rate by country of origin

Same HTS, very different landed cost. Here's how 2832 looks from the top trading partners — on a $10,000 shipment.

FTA partner Section 301 IEEPA in effect
Rates from last sync on Apr 28, 2026 · assumes entered value $10,000 · fees (MPF/HMF) excluded from the comparison above.
Questions about 2832

FAQ for this HTS code.

What is this HTS code?

This is a US Harmonized Tariff Schedule (HTS) code that classifies "Sulfites; thiosulfates:". It determines base duty rates for imports; additional duties may apply by country of origin.

Does origin affect duty?

Yes. General and Special rates apply by trade agreement and origin. Additional duties (Section 301, 232, IEEPA) are origin-specific. Use the tariff calculator or resolve API with an origin to see full duty.

How do I compute total duty?

Use our tariff calculator (with HTS and optional origin) or the API endpoint GET /api/v1/tariffs/resolve with hts and origin. The API returns base tariffs and additional measures separately; sum as needed for your use case.

Never miss a rate change on 2832.
We'll email you within an hour of any measure affecting this code.
Tariff data is informational; final determinations are made by CBP.
HTS 2832 · synced Apr 28, 2026 14:34 UTC