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

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Tartaric acid

In short

  • The US imported $27.6M of this product over the 12 months to August 2026, down 36% on the year before.
  • Italy is the largest supplier, with 76.0% of US imports; China is next, with 14.1%.
  • China is the cheapest main supplier before and after freight and duty, landing at $3.57/kg.
  • Duty paid averaged 13.8% of the value of imports in August 2026, down 0.1 points on a year earlier.
  • Argentina is gaining share: 18.9% over the last 12 months, up from 8.6%.
  • 2 Federal Register notices named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$2.2M

↓ −21% vs Aug 2025

Last 12 months

$27.6M

↓ −36% vs the 12 months before

Average duty paid

13.8%

↓ −0.1 pts vs Aug 2025

Top supplier

Italy

76.0% 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. 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 ↓
Show the numbers
MonthUS imports
August 2025$2.7M
September 2025$1.3M
October 2025$1.3M
November 2025$2.4M
December 2025$1.5M
January 2026$1.5M
February 2026$569K
March 2026$2.2M
April 2026$1.1M
May 2026$2.9M
June 2026$6.6M
July 2026$4.0M
August 2026$2.2M

What changed

  • US imports were $2.2M in August 2026, down 47% from July 2026 and down 21% from August 2025.
  • Over the 12 months to August 2026 they totalled $27.6M, down 36% on the 12 months before.
  • Biggest moves in market share since July 2026: Italy up from 40.5% to 76.0%, Argentina down from 29.0% to 9.0%.
  • Average price from Italy fell 16% since July 2026, to $5.34/kg.
  • Duty paid by the main suppliers held within 2 points of July 2026.

US trade by year

US imports were $27.6M in the 12 months to Aug 2026, down 17% on the 12 months to Aug 2017. US exports were $5.2M, up 81%. 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.

2017201820192020202120222023202420252026China ↑Duty ↑Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$33.1M
12 months to Aug 2018$60.8M
12 months to Aug 2019$40.7M
12 months to Aug 2020$42.4M
12 months to Aug 2021$33.3M
12 months to Aug 2022$49.3M
12 months to Aug 2023$41.8M
12 months to Aug 2024$38.4M
12 months to Aug 2025$43.4M
12 months to Aug 2026$27.6M
  • Italy
  • China
  • Argentina
  • Spain
  • All countries
Share of US imports
Show the numbers
PeriodItalyChinaArgentinaSpain
12 months to Aug 201745.5%23.7%6.0%17.9%
12 months to Aug 201849.9%13.5%8.0%19.9%
12 months to Aug 201939.6%22.6%18.1%14.7%
12 months to Aug 202049.2%15.1%9.7%20.1%
12 months to Aug 202151.7%16.4%11.9%17.9%
12 months to Aug 202255.5%19.5%7.1%14.1%
12 months to Aug 202341.0%13.1%14.5%26.4%
12 months to Aug 202454.1%13.1%8.8%21.3%
12 months to Aug 202562.9%10.6%8.6%15.3%
12 months to Aug 202649.7%19.6%18.9%10.0%
Duty paid, % of value
Show the numbers
PeriodItalyChinaArgentinaSpainAll countries
12 months to Aug 20170.0%0.0%0.0%0.0%0.0%
12 months to Aug 20180.0%0.0%0.0%0.0%0.0%
12 months to Aug 20190.0%11.9%0.0%0.0%2.7%
12 months to Aug 20200.0%25.0%0.0%0.0%3.8%
12 months to Aug 20210.0%25.0%0.0%0.0%4.1%
12 months to Aug 20220.0%25.0%0.0%0.0%4.9%
12 months to Aug 20230.0%25.0%0.0%0.0%3.3%
12 months to Aug 20240.0%25.0%0.0%0.0%3.3%
12 months to Aug 20254.9%37.8%8.1%4.9%8.6%
12 months to Aug 202610.1%43.0%9.8%11.6%16.6%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$27.6M−36%16.6%+8.1 pts$5.2M−27%
12 months to Aug 2025$43.4M+13%8.6%+5.3 pts$7.1M+36%
12 months to Aug 2024$38.4M−8.0%3.3%0.0 pts$5.2M−3.2%
12 months to Aug 2023$41.8M−15%3.3%−1.6 pts$5.4M+16%
12 months to Aug 2022$49.3M+48%4.9%+0.8 pts$4.7M+26%
12 months to Aug 2021$33.3M−21%4.1%+0.3 pts$3.7M+11%
12 months to Aug 2020$42.4M+4.2%3.8%+1.1 pts$3.3M−12%
12 months to Aug 2019$40.7M−33%2.7%+2.7 pts$3.8M−12%
12 months to Aug 2018$60.8M+84%0.0%0.0 pts$4.3M+49%
12 months to Aug 2017$33.1M0.0%$2.9M

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
Italy$1.6M76.0%−8.5 pts$5.34/kg−0.9%10.0%−0.3 pts
China$305K14.1%+5.8 pts$2.63/kg+44%37.5%−17.5 pts
Argentina$194K9.0%+3.4 pts$4.85/kg+27%10.0%0.0 pts
India$19K0.9%−0.1 pts$4.70/kg+47%0.0%0.0 pts
All countries$2.2M100.0%$4.62/kg+1.8%13.8%−0.1 pts

The 3 largest suppliers had 88.2% 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
China$2.37/kg$0.35/kg14.8% of price$0.85/kg35.7% of price$3.57/kg+17%
Argentina$4.83/kg$0.27/kg5.6% of price$0.47/kg9.7% of price$5.57/kg+6.2%
Spain$4.91/kg$0.24/kg4.9% of price$0.49/kg10.0% of price$5.64/kg+14%
Italy$5.43/kg$0.19/kg3.6% of price$0.52/kg9.6% of price$6.15/kg+0.7%
All countries$4.46/kg$0.26/kg5.8% of price$0.59/kg13.2% of price$5.30/kg+0.6%

Landed at a US port, China was cheapest, at $3.57/kg: 36.0% below Argentina.

Landed cost from China rose 17% on a year earlier, to $3.57/kg, mostly on price: $1.79/kg then, $2.37/kg now.

How the market is shifting

Argentina gained the most share: 18.9% of US imports over the last 12 months, up from 8.6% in the 12 months before. Italy lost the most: 49.7%, down from 62.9%. 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.

  • Italy
  • China
  • Argentina
  • Spain
  • All countries
Share of US imports
Show the numbers
MonthItalyChinaArgentinaSpain
September 202432.8%9.8%16.6%35.8%
October 202480.5%19.3%0.0%0.0%
November 202487.9%10.8%0.0%0.0%
December 202471.1%26.8%0.0%0.0%
January 202567.7%31.6%0.0%0.0%
February 202532.8%6.8%0.0%51.0%
March 202576.8%18.5%0.0%4.7%
April 202581.2%10.3%0.0%2.9%
May 202572.6%7.8%8.0%11.0%
June 202556.9%5.3%11.3%25.5%
July 202553.7%7.1%20.6%16.2%
August 202584.5%8.3%5.6%0.0%
September 202515.3%26.9%57.8%0.0%
October 202544.6%45.6%0.0%0.3%
November 202550.7%23.1%0.0%24.8%
December 202567.0%19.0%0.0%13.2%
January 202633.2%51.5%0.0%7.1%
February 202619.6%70.1%0.0%0.0%
March 202645.3%12.4%0.0%40.8%
April 202670.2%28.6%0.0%0.0%
May 202678.3%4.4%16.7%0.0%
June 202642.6%8.6%39.2%8.9%
July 202640.5%21.0%29.0%9.1%
August 202676.0%14.1%9.0%0.0%
Duty paid, % of value
Show the numbers
MonthItalyChinaArgentinaSpainAll countries
September 20240.0%25.0%0.0%0.0%2.5%
October 20240.0%25.0%n/an/a4.8%
November 20240.0%25.0%n/an/a2.7%
December 20240.0%25.0%n/an/a6.7%
January 20250.0%25.0%n/an/a7.9%
February 20250.0%25.0%n/a0.0%1.7%
March 20250.0%36.2%n/a0.0%6.7%
April 20250.7%45.0%n/a0.0%5.2%
May 20257.6%51.4%10.0%10.0%11.5%
June 202510.0%55.0%10.0%10.0%12.4%
July 202510.0%55.0%10.0%10.0%13.2%
August 202510.3%55.0%10.0%n/a13.9%
September 202510.0%55.0%10.0%n/a22.1%
October 202512.3%53.5%n/a15.0%30.6%
November 20257.0%51.0%n/a15.0%19.8%
December 202513.2%45.0%n/a15.0%19.5%
January 202614.9%45.0%n/a15.0%29.2%
February 202615.0%45.0%n/an/a35.9%
March 202610.0%35.0%n/a10.0%13.1%
April 202610.0%35.0%n/an/a17.2%
May 202610.0%35.0%10.0%n/a11.1%
June 202610.0%35.0%10.0%10.0%12.1%
July 20268.4%35.5%9.1%10.0%14.5%
August 202610.0%37.5%10.0%n/a13.8%

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. February–March 2026 · Duty paid: China 48.0% → 35.0%, all countries 23.2% → 13.8%.
  2. April–July 2025 · Duty paid: Italy 0.0% → 10.0%, China 25.0% → 53.2%, Spain 0.0% → 10.0%, all countries 9.2% → 19.0%.
  3. April 2023 · Duty paid: all countries 8.4% → 3.3%.
  4. September 2022 · Duty paid: all countries 4.8% → 10.1%.
  5. July 2019 · Duty paid: China 10.1% → 25.0%.
  6. November 2018 · Duty paid: China 0.0% → 10.0%.

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 2918.12

Where it enters the US

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

  1. Oakland, CA$8.3M · 30.0%
  2. Newark, NJ$7.3M · 26.3%
  3. New York, NY$4.1M · 14.9%
  4. Los Angeles, CA$2.8M · 10.2%
  5. Houston, TX$1.8M · 6.7%

Where US exports go

US exports were $556K in August 2026, down 16% from August 2025, and $5.2M over the last 12 months, down 27% on the 12 months before. Fastest-growing market with 3% or more of US exports: China, up 414%.

MarketLast 12 monthsSharevs 12 months before
Mexico$1.8M33.8%−17%
Korea, South$1.0M19.6%+9.1%
Canada$942K18.0%−54%
Taiwan$429K8.2%+18%
China$260K5.0%+414%
Singapore$202K3.9%−19%
Jamaica$115K2.2%−5.4%
Belgium$93K1.8%+45%
Other countries (14)$392K7.5%−56%
All countries$5.2M100.0%−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; 111 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
India$20.4Min 2025−10%$19K0.1%
Spain$19.4Min 2025+22%$2430.0%
Germany$15.4Min 2025−15%$5K0.0%
France$13.8Min 2025+6.3%$289K2.1%
Turkey$11.9Min 2025−5.7%$20.0%
Australia$9.9Min 2025+43%$00.0%
Belgium$8.9Min 2025+9.3%$25K0.3%
Mexico$7.0Min 2025+11%$172KUS records $1.7M2.4%

The biggest market outside the US is India, which imported $20.4M of this product in 2025, under 0.1% of it from the US.

Of these, imports into Australia grew fastest: up 43% from 2024 to 2025.

Other products under heading 2918: carboxylic acids with added oxygen function and their anhydrides, halides, peroxides etc.; their halogenated, sulfonated, nitrated etc. derivatives. US trade over the 12 months to August 2026.

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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