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

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HS 2933.54

Derivatives of malonylurea (barbituric acid) and its salts

In short

  • The US imported $5.6M of this product over the 12 months to August 2026, up 23% on the year before.
  • Hungary is the largest supplier, with 100.0% of US imports.
  • Hungary is the cheapest main supplier before and after freight and duty, landing at $61.32/kg.
  • Duty paid averaged 10.0% of the value of imports in August 2026, up 10.0 points on a year earlier.
  • India is gaining share: 4.5% over the last 12 months, up from 0.0%.
  • 4 Federal Register notices named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$65K

↑ +62% vs Aug 2025

Last 12 months

$5.6M

↑ +23% vs the 12 months before

Average duty paid

10.0%

↑ +10.0 pts vs Aug 2025

Top supplier

Hungary

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$40K
September 2025$141K
October 2025$1.1M
November 2025$0
December 2025$97K
January 2026$97K
February 2026$1.3M
March 2026$722K
April 2026$600K
May 2026$47K
June 2026$790K
July 2026$637K
August 2026$65K

What changed

  • US imports were $65K in August 2026, down 90% from July 2026 and up 62% from August 2025.
  • Over the 12 months to August 2026 they totalled $5.6M, up 23% on the 12 months before.
  • Biggest moves in market share since July 2026: Hungary up from 9.7% to 100.0%, Singapore down from 90.3% to 0.0%.
  • Average price from Hungary rose 66% since July 2026, to $73.15/kg.
  • Duty paid on imports from Hungary rose from 7.8% to 10.0% of their value since July 2026.

US trade by year

US imports were $5.6M in the 12 months to Aug 2026, up 200% on the 12 months to Aug 2017. US exports were $407K, up 51%. In January 2017 the HS 2017 revision moved some goods between this code and 2939.80, so part of a change across the dashed line can be the revision.

2017201820192020202120222023202420252026HS 2017
Show the numbers
PeriodUS imports
12 months to Aug 2017$1.9M
12 months to Aug 2018$2.1M
12 months to Aug 2019$776K
12 months to Aug 2020$6.2M
12 months to Aug 2021$3.9M
12 months to Aug 2022$5.4M
12 months to Aug 2023$1.8M
12 months to Aug 2024$1.8M
12 months to Aug 2025$4.5M
12 months to Aug 2026$5.6M
  • Singapore
  • Hungary
  • India
  • Germany
  • All countries
Share of US imports
Show the numbers
PeriodSingaporeHungaryIndiaGermany
12 months to Aug 201719.4%17.1%4.8%11.5%
12 months to Aug 201859.1%0.3%4.2%10.2%
12 months to Aug 20190.7%14.2%30.3%48.7%
12 months to Aug 202073.9%4.2%20.6%0.3%
12 months to Aug 202126.7%12.2%58.3%2.3%
12 months to Aug 202289.4%4.8%0.0%4.1%
12 months to Aug 202366.0%24.7%0.5%5.7%
12 months to Aug 202465.9%23.7%0.0%8.2%
12 months to Aug 202585.0%11.0%0.0%2.5%
12 months to Aug 202679.8%11.8%4.5%2.4%
Duty paid, % of value
Show the numbers
PeriodSingaporeHungaryIndiaGermanyAll countries
12 months to Aug 20172.6%3.7%0.0%3.1%3.2%
12 months to Aug 20180.2%3.7%0.0%3.7%1.4%
12 months to Aug 20193.7%3.7%3.7%3.7%3.7%
12 months to Aug 20201.2%3.7%3.7%3.7%1.9%
12 months to Aug 20213.7%3.7%0.1%3.7%1.6%
12 months to Aug 20223.7%3.7%n/a3.7%3.7%
12 months to Aug 20231.5%3.7%3.7%3.7%2.2%
12 months to Aug 20240.0%3.7%n/a3.7%1.2%
12 months to Aug 20250.8%3.4%n/a7.5%1.5%
12 months to Aug 20261.0%3.0%1.2%0.0%1.3%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$5.6M+23%1.3%−0.2 pts$407K−29%
12 months to Aug 2025$4.5M+152%1.5%+0.2 pts$574K+34%
12 months to Aug 2024$1.8M+2.3%1.2%−1.0 pts$428K−43%
12 months to Aug 2023$1.8M−68%2.2%−1.4 pts$754K+71%
12 months to Aug 2022$5.4M+41%3.7%+2.1 pts$441K+33%
12 months to Aug 2021$3.9M−38%1.6%−0.3 pts$331K+436%
12 months to Aug 2020$6.2M+705%1.9%−1.8 pts$62K−74%
12 months to Aug 2019$776K−62%3.7%+2.3 pts$238K−38%
12 months to Aug 2018$2.1M+11%1.4%−1.8 pts$385K+43%
12 months to Aug 2017HS 2017 revision$1.9M3.2%$270K

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
Hungary$65K100.0%0.0 pts$73.15/kg+66%10.0%+10.0 pts
All countries$65K100.0%$73.15/kg+66%10.0%+10.0 pts

The 3 largest suppliers had 96.0% 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
Hungary$55.26/kg$1.13/kg2.0% of price$4.93/kg8.9% of price$61.32/kg+23%
Singapore$354.45/kg$2.10/kg0.6% of price$0.00/kg0.0% of price$356.55/kg−97%
All countries$222.79/kg$1.90/kg0.9% of price$1.77/kg0.8% of price$226.46/kg−65%

Landed at a US port, Hungary was cheapest, at $61.32/kg: 82.8% below Singapore.

Landed cost from Singapore fell 97% on a year earlier, to $356.55/kg, mostly on price: $12,776/kg then, $354.45/kg now.

How the market is shifting

India gained the most share: 4.5% of US imports over the last 12 months, up from 0.0% in the 12 months before. Singapore lost the most: 79.8%, down from 85.0%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months.

  • Singapore
  • Hungary
  • India
  • Germany
  • All countries
Share of US imports
Show the numbers
MonthSingaporeHungaryIndiaGermany
September 20240.0%95.2%0.0%0.0%
October 202492.0%6.3%0.0%0.6%
November 20240.0%76.5%0.0%0.0%
December 20240.0%89.2%0.0%0.0%
January 20250.0%100.0%0.0%0.0%
February 20250.0%38.3%0.0%58.9%
March 202594.6%4.8%0.0%0.0%
April 2025n/an/an/an/a
May 20250.0%56.6%0.0%41.0%
June 20250.0%13.9%0.0%47.2%
July 202598.2%1.2%0.0%0.0%
August 20250.0%100.0%0.0%0.0%
September 20250.0%94.0%0.0%0.0%
October 202572.3%7.4%19.6%0.0%
November 2025n/an/an/an/a
December 20250.0%0.0%0.0%92.9%
January 20260.0%51.7%4.4%44.0%
February 202690.5%7.8%1.0%0.0%
March 202678.0%16.7%0.9%0.0%
April 202697.9%0.0%0.0%0.0%
May 20260.0%100.0%0.0%0.0%
June 202697.0%0.0%1.6%0.0%
July 202690.3%9.7%0.0%0.0%
August 20260.0%100.0%0.0%0.0%
Duty paid, % of value
Show the numbers
MonthSingaporeHungaryIndiaGermanyAll countries
September 2024n/a3.7%n/an/a3.7%
October 20243.7%3.7%n/a3.7%3.7%
November 2024n/a3.7%n/an/a3.7%
December 2024n/a3.7%n/an/a3.7%
January 2025n/a3.7%n/an/a3.7%
February 2025n/a3.7%n/a3.7%3.7%
March 20250.0%3.7%n/an/a0.3%
April 2025n/an/an/an/an/a
May 2025n/a3.7%n/a13.7%8.3%
June 2025n/a3.7%n/a3.7%11.5%
July 20250.0%3.7%n/an/a0.2%
August 2025n/a0.0%n/an/a0.0%
September 2025n/a0.0%n/an/a1.4%
October 20250.0%0.0%0.0%n/a0.2%
November 2025n/an/an/an/an/a
December 2025n/an/an/a0.0%1.0%
January 2026n/a0.0%0.0%0.0%0.0%
February 20263.7%3.7%20.8%n/a3.9%
March 20260.0%2.5%3.7%n/a0.5%
April 20260.0%n/an/an/a0.0%
May 2026n/a3.7%n/an/a3.7%
June 20260.0%n/a0.7%n/a0.1%
July 20260.0%7.8%n/an/a0.8%
August 2026n/a10.0%n/an/a10.0%

Tariff actions touching this product

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 2933.54

Where it enters the US

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

  1. Chicago, IL$3.5M · 63.3%
  2. Atlanta, GA$1.2M · 21.0%
  3. New Orleans, LA$780K · 14.0%
  4. Jfk International Airport, NY$43K · 0.8%
  5. Seattle-Tacoma International Airport, WA$20K · 0.4%

Where US exports go

US exports were $0 in August 2026, down 100% from August 2025, and $407K over the last 12 months, down 29% on the 12 months before.

MarketLast 12 monthsSharevs 12 months before
Canada$407K100.0%−6.6%
All countries$407K100.0%−29%

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; 76 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Japan$13.9Min 2025+11%$00.0%
Germany$1.5Min 2025+5.2%$2K0.1%
India$969Kin 2025+461%$3070.0%
Algeria$838Kin 2024n/a$00.0%
Canada$562Kin 2025+5.1%$536K95.5%
Belgium$245Kin 2025+16%$00.0%
Switzerland$175Kin 2025−66%$00.0%
Ukraine$173Kin 2024−57%$00.0%

The biggest market outside the US is Japan, which imported $13.9M of this product in 2025, none of it from the US.

The US supplies 95.5% of imports into Canada, but under 10% into Japan, Germany and India.

Of these, imports into Japan grew fastest: up 11% from 2024 to 2025.

Other products under heading 2933: heterocyclic compounds with nitrogen hetero-atom(s) only. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structue, not elsewhere specifiedHS 2933.39$1.22B$757.5M
Heterocyclic compounds with nitrogen hetero-atom(s) only, not elsewhere specifiedHS 2933.99$1.50B$388.7M
Heterocyclic compounds containing a pyrimidine ring (hydrogenated or not) or a piperazine ring in the structure, not elsewhere specifiedHS 2933.59$1.02B$336.1M
Lactams (excluding 6-hexanelactam), not elsewhere specifiedHS 2933.79$560.7M$127.6M
Heterocyclic compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure, not elsewhere specifiedHS 2933.19$534.8M$41.6M
Heterocyclic compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure, not elsewhere specifiedHS 2933.69$370.0M$139.8M
Heterocyclic compounds containing an unfused imidazole ring (wether or not hydrogenated) in the structure, not elsewhere specifiedHS 2933.29$115.1M$133.3M
Heterocyclic compounds containing a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused, not elsewhere specifiedHS 2933.49$94.7M$15.7M
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.

Try bamboo cutting boards, green coffee or 7318.15