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2830.90.90.00

Sulfides; polysulfides, whether or not chemically defined / Other

Classification path

  1. Sulfides; polysulfides, whether or not chemically defined
  2. Other
  3. Other

Rates of duty

General (MFN)
3%
Column 2Cuba, North Korea, Russia, Belarus
25%
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 2830

About heading 2830

Sulfides; polysulfides, whether or not chemically defined

Heading 2830 covers sulfides and polysulfides, whether or not chemically defined, including metal sulfides. The heading first separates sodium sulfides from all other sulfides. The other sulfides are split into zinc sulfide luminescent grade, other zinc sulfide, cadmium sulfide, and residual other.

Full guide to heading 2830

Products in this heading

  • Sodium sulfide
  • Zinc sulfide, luminescent grade with purity of 99.99% or more by weight
  • Other zinc sulfide
  • Cadmium sulfide
  • Calcium sulfide
  • Barium sulfide
  • Ammonium polysulfide

Frequently asked questions

What is the HTS code for sodium sulfide?

Sodium sulfides are classified under 2830.10.00.00 at a general (MFN) rate of 3.7%.

What is the duty on cadmium sulfide?

Cadmium sulfide is classified under 2830.90.20.00 and carries a general (MFN) rate of 3.1%.

How do I classify zinc sulfide?

For luminescent grade with a purity of 99.99% or more by weight, use 2830.90.10.00, general (MFN) Free. Other zinc sulfide uses 2830.90.15.00, general (MFN) 2.8%.

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 2830.90.90.00: Sulfides; polysulfides, whether or not chemically defined /..., 3% duty | HTSBase