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Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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HS 2831.90

Dithionites and sulfoxylates, except of sodium, not elsewhere specified

In short

  • The US imported $70K of this product over the 12 months to August 2026, down 31% on the year before.
  • India is the largest supplier, with 100.0% of US imports.
  • Duty paid averaged 15.5% of the value of imports in August 2026, up 0.1 points on a year earlier.
  • Japan is gaining share: 4.2% over the last 12 months, up from 0.0%.
  • US exports were $94K over the last 12 months; the largest market is Canada, with 57.0%.

US imports, Aug 2026

$2K

↓ −94% vs Aug 2025

Last 12 months

$70K

↓ −31% vs the 12 months before

Average duty paid

15.5%

↑ +0.1 pts vs Aug 2025

Top supplier

India

100.0% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAug
Show the numbers
MonthUS imports
August 2025$41K
September 2025$3K
October 2025$3K
November 2025$17K
December 2025$13K
January 2026$0
February 2026$11K
March 2026$0
April 2026$0
May 2026$0
June 2026$21K
July 2026$0
August 2026$2K

What changed

  • US imports were $2K in August 2026, down 94% from August 2025.
  • Over the 12 months to August 2026 they totalled $70K, down 31% on the 12 months before.
  • Biggest moves in market share since July 2026: India up from 0.0% to 100.0%.

US trade by year

US imports were $70K in the 12 months to Aug 2026, down 80% on the 12 months to Aug 2017. US exports were $94K, down 6.0%.

2017201820192020202120222023202420252026
Show the numbers
PeriodUS imports
12 months to Aug 2017$343K
12 months to Aug 2018$182K
12 months to Aug 2019$194K
12 months to Aug 2020$148K
12 months to Aug 2021$129K
12 months to Aug 2022$147K
12 months to Aug 2023$137K
12 months to Aug 2024$108K
12 months to Aug 2025$101K
12 months to Aug 2026$70K
  • India
  • Japan
  • United Kingdom
  • All countries
Share of US imports
Show the numbers
PeriodIndiaJapanUnited Kingdom
12 months to Aug 201748.2%0.0%0.0%
12 months to Aug 201891.1%0.0%0.0%
12 months to Aug 201956.7%0.0%0.0%
12 months to Aug 202089.6%0.0%1.4%
12 months to Aug 202189.4%0.0%10.6%
12 months to Aug 202295.7%0.0%4.3%
12 months to Aug 202357.5%0.0%2.4%
12 months to Aug 202464.5%0.0%0.0%
12 months to Aug 202589.2%0.0%0.0%
12 months to Aug 202692.5%4.2%3.4%
Duty paid, % of value
Show the numbers
PeriodIndiaJapanUnited KingdomAll countries
12 months to Aug 20171.4%n/an/a2.0%
12 months to Aug 20180.6%n/an/a0.9%
12 months to Aug 20195.5%n/an/a5.3%
12 months to Aug 20205.5%n/a5.5%6.0%
12 months to Aug 20215.5%n/a5.5%5.5%
12 months to Aug 20225.5%n/a5.5%5.5%
12 months to Aug 20235.5%n/a5.5%7.1%
12 months to Aug 20245.5%n/an/a10.8%
12 months to Aug 20258.9%n/an/a9.5%
12 months to Aug 202640.1%15.0%15.5%36.7%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$70K−31%36.7%+27.2 pts$94K−19%
12 months to Aug 2025$101K−6.6%9.5%−1.3 pts$116K−54%
12 months to Aug 2024$108K−21%10.8%+3.8 pts$255K−50%
12 months to Aug 2023$137K−6.6%7.1%+1.6 pts$511K+323%
12 months to Aug 2022$147K+14%5.5%0.0 pts$121K+4.7%
12 months to Aug 2021$129K−12%5.5%−0.5 pts$115K−54%
12 months to Aug 2020$148K−24%6.0%+0.7 pts$251K+431%
12 months to Aug 2019$194K+6.3%5.3%+4.4 pts$47K−75%
12 months to Aug 2018$182K−47%0.9%−1.0 pts$189K+88%
12 months to Aug 2017$343K2.0%$100K

Who supplies the US

August 2026. Small figures under each value are the change from August 2025.

CountryUS importsShareAverage priceDuty paidLast 13 months
India$2K100.0%+26.4 pts$48.02/kg+1007%15.5%0.0 pts
All countries$2K100.0%$48.02/kg+831%15.5%+0.1 pts

The 3 largest suppliers had 100.0% of US imports over the last 12 months.

How the market is shifting

Japan gained the most share: 4.2% of US imports over the last 12 months, up from 0.0% in the 12 months before. The charts show September 2024 to August 2026 for the 3 largest suppliers over the last 12 months.

  • India
  • Japan
  • United Kingdom
  • All countries
Share of US imports
Show the numbers
MonthIndiaJapanUnited Kingdom
September 2024100.0%0.0%0.0%
October 2024100.0%0.0%0.0%
November 2024100.0%0.0%0.0%
December 2024100.0%0.0%0.0%
January 2025n/an/an/a
February 2025n/an/an/a
March 2025n/an/an/a
April 2025n/an/an/a
May 2025n/an/an/a
June 2025n/an/an/a
July 2025n/an/an/a
August 202573.6%0.0%0.0%
September 2025100.0%0.0%0.0%
October 2025100.0%0.0%0.0%
November 2025100.0%0.0%0.0%
December 202577.4%22.6%0.0%
January 2026n/an/an/a
February 202678.3%0.0%21.7%
March 2026n/an/an/a
April 2026n/an/an/a
May 2026n/an/an/a
June 2026100.0%0.0%0.0%
July 2026n/an/an/a
August 2026100.0%0.0%0.0%
Duty paid, % of value
Show the numbers
MonthIndiaJapanUnited KingdomAll countries
September 20245.5%n/an/a5.5%
October 20245.5%n/an/a5.5%
November 20245.5%n/an/a5.5%
December 20245.5%n/an/a5.5%
January 2025n/an/an/an/a
February 2025n/an/an/an/a
March 2025n/an/an/an/a
April 2025n/an/an/an/a
May 2025n/an/an/an/a
June 2025n/an/an/an/a
July 2025n/an/an/an/a
August 202515.5%n/an/a15.4%
September 202555.5%n/an/a55.5%
October 202555.5%n/an/a55.5%
November 202555.5%n/an/a55.5%
December 2025n/a15.0%n/a15.0%
January 2026n/an/an/an/a
February 20265.5%n/a15.5%7.7%
March 2026n/an/an/an/a
April 2026n/an/an/an/a
May 2026n/an/an/an/a
June 2026n/an/an/an/a
July 2026n/an/an/an/a
August 202615.5%n/an/a15.5%

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. New York, NY$31K · 44.4%
  2. Charleston, SC$25K · 36.4%
  3. Savannah, GA$10K · 15.1%
  4. San Francisco International Airport, CA$3K · 4.2%

Where US exports go

US exports were $14K in August 2026, down 43% from August 2025, and $94K over the last 12 months, down 19% on the 12 months before. Fastest-growing market with 3% or more of US exports: Mexico, up 236%.

MarketLast 12 monthsSharevs 12 months before
Canada$54K57.0%−20%
Mexico$20K21.5%+236%
Turkey$9K10.0%new
Colombia$4K4.2%new
Belgium$4K4.2%new
Italy$3K3.1%new
All countries$94K100.0%−19%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 61 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Pakistan$11.5Min 2025+8.7%$00.0%
Egypt$6.1Min 2025+1811%$00.0%
Turkey$2.0Min 2025+53%$7K0.3%
China$1.8Min 2025+2.7%$00.0%
Spain$1.0Min 2025−17%$00.0%
Korea, South$1.0Min 2025+140%$00.0%
Indonesia$462Kin 2025−33%$00.0%
Papua New Guinea$425Kin 2024+656%$00.0%

The biggest market outside the US is Pakistan, which imported $11.5M of this product in 2025, none of it from the US.

Of these, imports into Turkey grew fastest: up 53% from 2024 to 2025.

Other products under heading 2831: dithionites and sulfoxylates. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Dithionites and sulfoxylates of sodiumHS 2831.10$14.0M$1.4M
About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (kilograms), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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