HS Code 2831.90.0000

Dithionites and Sulfoxylates — US Import Duty

Official Description

Dithionites and sulfoxylates: > Other

Hierarchy: Dithionites and sulfoxylates > Other

US Duty Rates (2026 HTS)

General Rate (MFN)5.5%
Unit of MeasureKG

Special Trade Program Rates

  • FreeA, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG — see HTS General Notes for eligible countries

Possible Additional Duties

  • Section 301 Brazil TariffThe duty provided in the applicable subheading + 25% (origin: BR)
  • Section 301 "Forced Labor" AlgeriaThe duty provided in the applicable subheading + 12.5% (origin: DZ)
  • Section 301 "Forced Labor" AngolaThe duty provided in the applicable subheading + 12.5% (origin: AO)
  • Section 301 "Forced Labor" ArgentinaThe duty provided in the applicable subheading + 10% (origin: AR)
  • Section 301 "Forced Labor" AustraliaThe duty provided in the applicable subheading + 12.5% (origin: AU)
  • Section 301 "Forced Labor" BahamasThe duty provided in the applicable subheading + 12.5% (origin: BS)

Applicability depends on country of origin and date of entry. Run the calculator for the full duty stack.

Classification

Chapter
Chapter 28 — Inorganic Chemicals; Organic or Inorganic Compounds of Precious Metals, of Rare-Earth Metals, of Radioactive Elements or of Isotopes
Heading
2831 — Dithionites and sulfoxylates

Related Codes in this Heading

2831.10.1000
Sodium formaldehyde sulfoxylate
2831.10.5000
Of sodium

Common Questions

What is the US import duty for HS Code 2831.90.0000?

The general (MFN) duty rate for HS Code 2831.90.0000 (Dithionites and sulfoxylates) is 5.5%. Preferential rates apply under 1 special trade program for eligible countries of origin. Use the calculator for an exact landed-cost estimate.

Are there additional tariffs on HS Code 2831.90.0000?

Yes — Chapter 99 measures may apply, including Section 301 Brazil Tariff, Section 301 "Forced Labor" Algeria, Section 301 "Forced Labor" Angola, among others. Applicability depends on the country of origin and entry date.

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