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

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Thiosulfates

In short

  • The US imported $4.4M of this product over the 12 months to August 2026, down 47% on the year before.
  • Germany is the largest supplier, with 65.4% of US imports; China is next, with 23.8%.
  • China has the lowest price, but landed at a US port with freight and duty Canada is cheaper: $0.51/kg against $0.65/kg.
  • Duty paid averaged 16.7% of the value of imports in August 2026, up 0.9 points on a year earlier.
  • China is gaining share: 21.5% over the last 12 months, up from 11.1%.
  • 2 Federal Register notices named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$221K

↓ −64% vs Aug 2025

Last 12 months

$4.4M

↓ −47% vs the 12 months before

Average duty paid

16.7%

↑ +0.9 pts vs Aug 2025

Top supplier

Germany

65.4% 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. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↑Duty ↓
Show the numbers
MonthUS imports
August 2025$609K
September 2025$1.0M
October 2025$719K
November 2025$554K
December 2025$456K
January 2026$313K
February 2026$195K
March 2026$107K
April 2026$149K
May 2026$229K
June 2026$175K
July 2026$261K
August 2026$221K

What changed

  • US imports were $221K in August 2026, down 15% from July 2026 and down 64% from August 2025.
  • Over the 12 months to August 2026 they totalled $4.4M, down 47% on the 12 months before.
  • Biggest moves in market share since July 2026: Germany up from 9.5% to 65.4%, China down from 57.3% to 23.8%.
  • Average price from Germany fell 51% since July 2026, to $1.19/kg.
  • Duty paid on imports from Germany rose from 2.5% to 10.0% of their value since July 2026.
  • Duty paid on imports from China rose from 35.7% to 39.0% of their value since July 2026.

US trade by year

US imports were $4.4M in the 12 months to Aug 2026, down 10% on the 12 months to Aug 2017. US exports were $28.6M, up 126%. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

2017201820192020202120222023202420252026Duty ↑Duty ↓Duty ↓Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$4.9M
12 months to Aug 2018$4.4M
12 months to Aug 2019$4.7M
12 months to Aug 2020$5.6M
12 months to Aug 2021$3.9M
12 months to Aug 2022$8.1M
12 months to Aug 2023$9.4M
12 months to Aug 2024$8.5M
12 months to Aug 2025$8.3M
12 months to Aug 2026$4.4M
  • Vietnam
  • China
  • Germany
  • India
  • All countries
Share of US imports
Show the numbers
PeriodVietnamChinaGermanyIndia
12 months to Aug 20170.0%85.2%2.9%1.6%
12 months to Aug 20180.0%89.5%1.6%2.9%
12 months to Aug 20190.0%84.0%7.0%5.8%
12 months to Aug 20200.0%85.2%7.5%4.3%
12 months to Aug 20210.0%79.2%8.4%6.0%
12 months to Aug 20220.0%86.1%3.3%5.2%
12 months to Aug 202360.5%28.3%3.6%4.1%
12 months to Aug 202475.8%13.0%2.5%4.1%
12 months to Aug 202575.0%11.1%5.2%4.6%
12 months to Aug 202653.7%21.5%11.2%6.5%
Duty paid, % of value
Show the numbers
PeriodVietnamChinaGermanyIndiaAll countries
12 months to Aug 2017n/a1.5%1.5%0.3%1.5%
12 months to Aug 2018n/a1.5%1.5%0.0%1.4%
12 months to Aug 2019n/a13.7%1.4%0.7%11.7%
12 months to Aug 2020n/a23.5%1.2%0.8%20.2%
12 months to Aug 2021n/a24.0%1.3%1.5%19.2%
12 months to Aug 2022n/a26.5%1.6%1.5%23.0%
12 months to Aug 20231.5%26.5%1.5%1.5%8.6%
12 months to Aug 20241.5%25.5%1.5%1.5%4.6%
12 months to Aug 20254.7%37.1%6.1%4.2%8.5%
12 months to Aug 202619.8%42.0%12.1%22.5%23.0%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$4.4M−47%23.0%+14.6 pts$28.6M−27%
12 months to Aug 2025$8.3M−2.3%8.5%+3.9 pts$39.0M−24%
12 months to Aug 2024$8.5M−9.8%4.6%−4.0 pts$51.4M+76%
12 months to Aug 2023$9.4M+16%8.6%−14.4 pts$29.1M+3.2%
12 months to Aug 2022$8.1M+110%23.0%+3.8 pts$28.2M+42%
12 months to Aug 2021$3.9M−32%19.2%−1.0 pts$19.9M+23%
12 months to Aug 2020$5.6M+19%20.2%+8.5 pts$16.2M−7.3%
12 months to Aug 2019$4.7M+7.7%11.7%+10.2 pts$17.5M−4.6%
12 months to Aug 2018$4.4M−10%1.4%0.0 pts$18.3M+44%
12 months to Aug 2017$4.9M1.5%$12.7M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

CountryUS importsShareAverage priceDuty paidLast 13 months
Germany$145K65.4%+62.0 pts$1.19/kg−43%10.0%−1.5 pts
China$53K23.8%+13.6 pts$0.43/kg+37%39.0%−17.5 pts
India$18K8.0%−2.4 pts$0.80/kg+6.8%11.5%0.0 pts
Canada$6K2.8%new$1.60/kg0.0%
All countries$221K100.0%$0.82/kg−19%16.7%+0.9 pts

The 3 largest suppliers had 86.4% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

  • Price
  • Freight and insurance
  • Duty
CountryPriceFreight and insuranceDutyLanded costMake-up
Canada$0.50/kg$0.01/kg1.4% of price$0.00/kg0.0% of price$0.51/kg−73%
China$0.38/kg$0.13/kg33.9% of price$0.14/kg36.6% of price$0.65/kg+3.9%
India$0.77/kg$0.15/kg19.9% of price$0.09/kg11.5% of price$1.01/kg+26%
Germany$1.43/kg$0.07/kg4.8% of price$0.13/kg9.3% of price$1.63/kg−69%
Vietnam$1.29/kg$0.21/kg16.2% of price$0.15/kg11.5% of price$1.65/kg−15%
All countries$0.57/kg$0.12/kg20.6% of price$0.13/kg22.1% of price$0.82/kg−36%

Landed at a US port, Canada was cheapest, at $0.51/kg: 22.5% below China.

China had the lowest price before freight and duty, $0.38/kg, but they added 70.5% to it.

Landed cost from Canada fell 73% on a year earlier, to $0.51/kg, mostly on price: $1.26/kg then, $0.50/kg now.

How the market is shifting

China gained the most share: 21.5% of US imports over the last 12 months, up from 11.1% in the 12 months before. Vietnam lost the most: 53.7%, down from 75.0%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

  • Vietnam
  • China
  • Germany
  • India
  • All countries
Share of US imports
Show the numbers
MonthVietnamChinaGermanyIndia
September 202468.1%18.1%12.1%0.6%
October 202424.2%40.0%0.0%21.6%
November 202447.2%33.2%1.1%2.5%
December 202477.3%14.2%0.0%7.7%
January 202567.6%16.0%6.7%0.6%
February 202563.9%19.8%8.3%7.1%
March 202594.0%1.8%1.3%1.7%
April 202578.7%6.7%2.6%4.7%
May 202569.5%5.6%15.6%7.1%
June 202576.0%11.7%2.6%2.0%
July 202567.3%22.8%1.2%7.6%
August 202573.3%10.2%3.5%10.4%
September 202580.3%6.3%2.0%5.0%
October 202578.0%12.4%1.7%3.0%
November 202579.0%7.1%10.8%1.7%
December 202572.2%8.2%13.9%0.7%
January 202642.8%25.9%1.6%22.6%
February 202629.5%41.2%23.0%2.3%
March 20260.0%90.1%0.0%2.0%
April 20260.0%56.6%0.0%13.8%
May 20260.0%27.3%39.6%15.0%
June 20260.0%63.3%15.6%3.7%
July 20268.2%57.3%9.5%16.9%
August 20260.0%23.8%65.4%8.0%
Duty paid, % of value
Show the numbers
MonthVietnamChinaGermanyIndiaAll countries
September 20241.5%22.6%1.5%1.5%5.3%
October 20241.5%26.5%n/a1.5%11.5%
November 20241.5%26.5%3.1%1.5%9.8%
December 20241.5%26.5%n/a1.5%5.0%
January 20251.5%26.5%1.5%1.5%5.4%
February 20251.5%18.7%1.5%1.5%4.9%
March 20251.5%42.0%1.7%1.5%2.3%
April 20254.1%46.5%6.9%3.7%8.0%
May 20257.7%60.1%9.3%0.0%10.5%
June 202511.3%53.9%11.5%11.5%16.2%
July 202511.5%56.5%11.5%11.5%21.8%
August 202511.2%56.5%11.5%11.5%15.9%
September 202517.4%55.9%15.0%20.2%19.1%
October 202521.1%55.8%15.0%51.5%25.2%
November 202520.8%52.1%15.0%51.5%22.7%
December 202521.5%46.5%15.0%51.5%22.8%
January 202621.5%46.5%15.0%27.7%28.8%
February 202621.5%41.8%15.0%51.5%28.3%
March 2026n/a36.5%n/a11.5%34.0%
April 2026n/a36.5%n/a11.5%25.0%
May 2026n/a36.5%11.5%11.5%18.3%
June 2026n/a36.6%11.5%11.5%25.4%
July 202611.5%35.7%2.5%11.5%24.6%
August 2026n/a39.0%10.0%11.5%16.7%

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

  1. May 2026 · Duty paid: all countries 28.5% → 21.5%.
  2. October–December 2025 · Duty paid: Vietnam 11.4% → 21.3%, all countries 20.8% → 28.5%.
  3. May 2025 · Duty paid: Vietnam 1.5% → 11.2%, all countries 5.1% → 16.3%.
  4. February 2023 · Duty paid: all countries 21.8% → 6.5%.
  5. January–March 2021 · Duty paid: China 13.6% → 26.5%, all countries 14.8% → 21.2%.
  6. October 2020 · Duty paid: all countries 22.2% → 9.7%.
  7. July 2019 · Duty paid: China 12.2% → 22.2%, all countries 9.9% → 19.2%.
  8. October 2018 · Duty paid: China 1.5% → 10.8%, all countries 1.7% → 9.2%.

Federal Register notices from the last 12 months that list this product's tariff codes. A notice can add a duty, exclude products from one or only mention them, so read each for what it changes. Search the Federal Register for 2832.30

Where it enters the US

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

  1. Los Angeles, CA$1.3M · 28.9%
  2. Newark, NJ$865K · 19.6%
  3. Savannah, GA$533K · 12.1%
  4. Houston, TX$420K · 9.5%
  5. Baltimore, MD$416K · 9.4%

Where US exports go

US exports were $936K in August 2026, down 24% from August 2025, and $28.6M over the last 12 months, down 27% on the 12 months before. Fastest-growing market with 3% or more of US exports: Argentina, up 18%.

MarketLast 12 monthsSharevs 12 months before
Mexico$10.2M35.8%+8.6%
Canada$9.0M31.4%+7.2%
Turkey$4.1M14.4%−72%
Argentina$1.0M3.6%+18%
Uruguay$825K2.9%−13%
France$564K2.0%+17%
Cyprus$548K1.9%−33%
Oman$468K1.6%new
Other countries (31)$1.8M6.5%−37%
All countries$28.6M100.0%−27%

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; 110 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

MarketImportsvs year beforeFrom the USUS share
Mexico$10.5Min 2025+4.3%$10.0M94.8%
United Kingdom$9.7Min 2025+61%$1.6MUS records $790K16.3%
Canada$9.7Min 2025+26%$8.7M90.2%
France$8.6Min 2025+107%$30K0.3%
Belgium$7.3Min 2025+302%$3910.0%
Korea, South$5.3Min 2025−27%$17K0.3%
Spain$5.2Min 2025+15%$25K0.5%
Ukraine$4.8Min 2024−11%$00.0%

The biggest market outside the US is Mexico, which imported $10.5M of this product in 2025, 94.8% of that from the US.

The US supplies 94.8% of imports into Mexico and 90.2% into Canada, but under 10% into France, Belgium and South Korea.

Of these, imports into Belgium grew fastest: up 302% from 2024 to 2025.

Other products under heading 2832: sulfites; thiosulfates. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Sodium sulfitesHS 2832.10$27.7M$10.6M
Sulfites, except sodium sulfites, not elsewhere specifiedHS 2832.20$1.4M$11.6M
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.
  • Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
  • 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.
  • Tariff notices are from the Federal Register, matched to this product by the HTS numbers in their text.
  • 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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