Official data Source: US Census Bureau international trade data
Track this productNatural polymers and modified natural polymers not elsewhere specified, in primary forms
In short
- The US imported $374.3M of this product over the 12 months to August 2026, down 2.2% on the year before.
- Sweden is the largest supplier, with 29.6% of US imports; China is next, with 17.6%.
- China has the lowest price, but landed at a US port with freight and duty Italy is cheaper: $5.70/kg against $6.65/kg.
- Duty paid averaged 12.9% of the value of imports in August 2026, down 3.4 points on a year earlier.
- Sweden is gaining share: 24.3% over the last 12 months, up from 17.9%.
- 3 Federal Register notices named this product's tariff codes in the last 12 months.
US imports, Aug 2026
$32.4M
↑ +16% vs Aug 2025
Last 12 months
$374.3M
↓ −2.2% vs the 12 months before
Average duty paid
12.9%
↓ −3.4 pts vs Aug 2025
Top supplier
Sweden
29.6% 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.
Show the numbers
| Month | US imports |
|---|---|
| August 2025 | $28.0M |
| September 2025 | $35.6M |
| October 2025 | $35.4M |
| November 2025 | $25.4M |
| December 2025 | $27.9M |
| January 2026 | $30.8M |
| February 2026 | $25.5M |
| March 2026 | $27.0M |
| April 2026 | $37.6M |
| May 2026 | $27.1M |
| June 2026 | $32.2M |
| July 2026 | $37.4M |
| August 2026 | $32.4M |
What changed
- US imports were $32.4M in August 2026, down 13% from July 2026 and up 16% from August 2025.
- Over the 12 months to August 2026 they totalled $374.3M, down 2.2% on the 12 months before.
- Biggest moves in market share since July 2026: Italy up from 1.7% to 8.2%, United Kingdom down from 16.5% to 6.9%.
- Average price from Sweden rose 433% since July 2026, to $1,185/kg.
- Duty paid on imports from Colombia rose from 0.0% to 12.5% of their value since July 2026.
- Duty paid on imports from China rose from 31.1% to 42.5% of their value since July 2026.
US trade by year
US imports were $374.3M in the 12 months to Aug 2026, up 32% on the 12 months to Aug 2017. US exports were $326.3M, up 4.9%. 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.
Show the numbers
| Period | US imports |
|---|---|
| 12 months to Aug 2017 | $282.5M |
| 12 months to Aug 2018 | $294.3M |
| 12 months to Aug 2019 | $319.2M |
| 12 months to Aug 2020 | $305.3M |
| 12 months to Aug 2021 | $290.1M |
| 12 months to Aug 2022 | $357.9M |
| 12 months to Aug 2023 | $394.3M |
| 12 months to Aug 2024 | $378.6M |
| 12 months to Aug 2025 | $382.5M |
| 12 months to Aug 2026 | $374.3M |
- Sweden
- China
- Austria
- United Kingdom
- All countries
Show the numbers
| Period | Sweden | China | Austria | United Kingdom |
|---|---|---|---|---|
| 12 months to Aug 2017 | 22.7% | 28.1% | 13.4% | 0.5% |
| 12 months to Aug 2018 | 18.4% | 29.4% | 16.4% | 0.3% |
| 12 months to Aug 2019 | 22.4% | 29.7% | 15.1% | 1.9% |
| 12 months to Aug 2020 | 28.2% | 21.3% | 15.1% | 0.6% |
| 12 months to Aug 2021 | 20.5% | 22.1% | 15.2% | 3.6% |
| 12 months to Aug 2022 | 22.8% | 26.5% | 12.3% | 2.1% |
| 12 months to Aug 2023 | 20.0% | 27.0% | 18.1% | 4.4% |
| 12 months to Aug 2024 | 19.5% | 23.6% | 22.3% | 2.8% |
| 12 months to Aug 2025 | 17.9% | 24.8% | 21.3% | 2.3% |
| 12 months to Aug 2026 | 24.3% | 20.7% | 15.6% | 6.1% |
Show the numbers
| Period | Sweden | China | Austria | United Kingdom | All countries |
|---|---|---|---|---|---|
| 12 months to Aug 2017 | 5.7% | 5.4% | 5.8% | 6.2% | 5.2% |
| 12 months to Aug 2018 | 5.7% | 5.8% | 5.8% | 6.3% | 5.3% |
| 12 months to Aug 2019 | 5.8% | 18.0% | 5.8% | 6.5% | 9.0% |
| 12 months to Aug 2020 | 5.8% | 27.4% | 5.8% | 6.1% | 9.9% |
| 12 months to Aug 2021 | 5.8% | 29.9% | 5.8% | 6.2% | 10.5% |
| 12 months to Aug 2022 | 5.8% | 30.3% | 5.8% | 5.9% | 11.8% |
| 12 months to Aug 2023 | 5.8% | 30.4% | 5.8% | 6.0% | 12.0% |
| 12 months to Aug 2024 | 5.7% | 30.6% | 5.8% | 5.9% | 11.1% |
| 12 months to Aug 2025 | 5.3% | 40.0% | 5.2% | 6.5% | 13.5% |
| 12 months to Aug 2026 | 2.8% | 37.9% | 3.8% | 4.3% | 10.5% |
| Period | US imports | Duty paid | US exports |
|---|---|---|---|
| 12 months to Aug 2026 | $374.3M−2.2% | 10.5%−3.0 pts | $326.3M−6.8% |
| 12 months to Aug 2025 | $382.5M+1.0% | 13.5%+2.3 pts | $350.2M0.0% |
| 12 months to Aug 2024 | $378.6M−4.0% | 11.1%−0.9 pts | $350.1M−0.8% |
| 12 months to Aug 2023 | $394.3M+10% | 12.0%+0.1 pts | $352.9M+11% |
| 12 months to Aug 2022 | $357.9M+23% | 11.8%+1.3 pts | $317.3M+0.9% |
| 12 months to Aug 2021 | $290.1M−5.0% | 10.5%+0.6 pts | $314.5M−8.6% |
| 12 months to Aug 2020 | $305.3M−4.4% | 9.9%+0.9 pts | $344.1M+3.1% |
| 12 months to Aug 2019 | $319.2M+8.5% | 9.0%+3.7 pts | $333.7M+1.5% |
| 12 months to Aug 2018 | $294.3M+4.2% | 5.3%+0.1 pts | $328.7M+5.6% |
| 12 months to Aug 2017 | $282.5M | 5.2% | $311.1M |
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.
| Country | US imports | Share | Average price | Duty paid | Last 13 months |
|---|---|---|---|---|---|
| Sweden | $9.6M | 29.6%+22.4 pts | $1,185/kg+23% | 3.4%+3.4 pts | |
| China | $5.7M | 17.6%−10.7 pts | $4.44/kg−20% | 42.5%−9.4 pts | |
| Austria | $4.7M | 14.5%−3.0 pts | $6.45/kg−7.9% | 9.6%+9.6 pts | |
| Italy | $2.7M | 8.2%+5.2 pts | $7.54/kg+275% | 4.0%+1.5 pts | |
| United Kingdom | $2.2M | 6.9%−3.1 pts | $5,606/kg+2948% | 5.7%−2.4 pts | |
| France | $1.5M | 4.6%−1.2 pts | $24.43/kg+17% | 9.8%+7.5 pts | |
| Colombia | $1.1M | 3.5%+1.0 pts | $70.86/kg+2.8% | 12.5%+2.5 pts | |
| Denmark | $947K | 2.9%−1.5 pts | $49.85/kg−41% | 6.3%+6.3 pts | |
| Other countries (20) | $3.9M | 12.1%−7.1 pts | $10.57/kg−63% | 9.6%+8.2 pts | |
| All countries | $32.4M | 100.0% | $11.37/kg+16% | 12.9%−3.4 pts |
The 3 largest suppliers had 60.5% 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
| Country | Price | Freight and insurance | Duty | Landed cost | Make-up |
|---|---|---|---|---|---|
| Italy | $5.15/kg | $0.27/kg5.3% of price | $0.28/kg5.4% of price | $5.70/kg+141% | |
| China | $4.79/kg | $0.24/kg5.0% of price | $1.63/kg34.0% of price | $6.65/kg−2.6% | |
| Austria | $6.14/kg | $0.19/kg3.0% of price | $0.43/kg7.1% of price | $6.76/kg−6.2% | |
| France | $18.70/kg | $0.42/kg2.2% of price | $1.34/kg7.2% of price | $20.47/kg−15% | |
| Germany | $52.84/kg | $0.58/kg1.1% of price | $1.10/kg2.1% of price | $54.51/kg−29% | |
| Colombia | $74.22/kg | $0.12/kg0.2% of price | $2.86/kg3.9% of price | $77.20/kg+0.5% | |
| Sweden | $224.90/kg | $1.15/kg0.5% of price | $11.15/kg5.0% of price | $237.20/kg−62% | |
| United Kingdom | $561.89/kg | $3.55/kg0.6% of price | $32.31/kg5.7% of price | $597.75/kg+90% | |
| All countries | $11.18/kg | $0.26/kg2.3% of price | $1.27/kg11.3% of price | $12.71/kg+33% |
Landed at a US port, Italy was cheapest, at $5.70/kg: 14.3% below China.
China had the lowest price before freight and duty, $4.79/kg, but they added 39.0% to it.
Landed cost from Italy rose 141% on a year earlier, to $5.70/kg, mostly on price: $2.12/kg then, $5.15/kg now.
How the market is shifting
Sweden gained the most share: 24.3% of US imports over the last 12 months, up from 17.9% in the 12 months before. Austria lost the most: 15.6%, down from 21.3%. 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.
- Sweden
- China
- Austria
- United Kingdom
- All countries
Show the numbers
| Month | Sweden | China | Austria | United Kingdom |
|---|---|---|---|---|
| September 2024 | 21.9% | 21.8% | 28.3% | 0.7% |
| October 2024 | 30.0% | 21.4% | 11.9% | 1.8% |
| November 2024 | 20.4% | 21.8% | 17.7% | 0.7% |
| December 2024 | 28.6% | 28.1% | 16.0% | 0.7% |
| January 2025 | 12.5% | 33.8% | 19.7% | 2.0% |
| February 2025 | 15.7% | 19.0% | 27.7% | 0.8% |
| March 2025 | 9.6% | 21.4% | 36.5% | 0.7% |
| April 2025 | 24.7% | 17.1% | 23.0% | 3.2% |
| May 2025 | 8.0% | 23.7% | 28.7% | 1.4% |
| June 2025 | 11.0% | 33.9% | 14.0% | 1.5% |
| July 2025 | 22.3% | 24.6% | 14.6% | 5.1% |
| August 2025 | 7.2% | 28.3% | 17.5% | 10.0% |
| September 2025 | 35.5% | 13.8% | 14.4% | 1.8% |
| October 2025 | 23.4% | 19.9% | 12.5% | 4.4% |
| November 2025 | 27.0% | 22.7% | 18.2% | 3.0% |
| December 2025 | 20.9% | 23.6% | 19.8% | 2.6% |
| January 2026 | 32.6% | 24.6% | 11.3% | 7.9% |
| February 2026 | 22.4% | 23.7% | 20.1% | 5.0% |
| March 2026 | 11.5% | 23.4% | 21.2% | 1.0% |
| April 2026 | 23.1% | 15.5% | 17.6% | 15.7% |
| May 2026 | 16.7% | 25.0% | 14.5% | 2.3% |
| June 2026 | 17.9% | 24.3% | 17.7% | 1.0% |
| July 2026 | 26.6% | 18.7% | 8.7% | 16.5% |
| August 2026 | 29.6% | 17.6% | 14.5% | 6.9% |
Show the numbers
| Month | Sweden | China | Austria | United Kingdom | All countries |
|---|---|---|---|---|---|
| September 2024 | 5.8% | 30.8% | 5.8% | 6.0% | 10.8% |
| October 2024 | 5.8% | 30.5% | 5.8% | 6.1% | 10.7% |
| November 2024 | 5.8% | 30.6% | 5.8% | 6.0% | 10.8% |
| December 2024 | 5.9% | 30.1% | 5.8% | 6.0% | 12.3% |
| January 2025 | 5.8% | 30.8% | 5.8% | 5.8% | 13.7% |
| February 2025 | 5.8% | 31.4% | 5.8% | 5.9% | 10.1% |
| March 2025 | 5.7% | 44.7% | 5.8% | 6.2% | 13.8% |
| April 2025 | 5.8% | 50.1% | 5.8% | 5.6% | 13.2% |
| May 2025 | 5.8% | 51.7% | 5.8% | 5.9% | 15.5% |
| June 2025 | 5.7% | 49.9% | 5.8% | 5.9% | 19.9% |
| July 2025 | 2.2% | 50.0% | 1.6% | 5.5% | 14.2% |
| August 2025 | 0.0% | 51.9% | 0.0% | 8.1% | 16.3% |
| September 2025 | 0.0% | 49.7% | 0.0% | 0.1% | 7.2% |
| October 2025 | 0.1% | 50.2% | 0.0% | 0.0% | 10.2% |
| November 2025 | 0.0% | 43.1% | 0.0% | 1.0% | 9.9% |
| December 2025 | 0.0% | 40.7% | 0.0% | 0.1% | 9.9% |
| January 2026 | 0.0% | 40.7% | 0.0% | 0.0% | 10.2% |
| February 2026 | 5.9% | 37.9% | 5.8% | 5.8% | 13.2% |
| March 2026 | 5.9% | 30.9% | 5.8% | 6.1% | 11.3% |
| April 2026 | 5.9% | 30.2% | 5.8% | 5.8% | 9.2% |
| May 2026 | 5.8% | 31.0% | 5.8% | 5.9% | 11.7% |
| June 2026 | 5.8% | 30.5% | 5.8% | 5.9% | 11.1% |
| July 2026 | 5.9% | 31.1% | 5.6% | 5.8% | 10.1% |
| August 2026 | 3.4% | 42.5% | 9.6% | 5.7% | 12.9% |
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.
- January–March 2026 · Duty paid: Sweden 0.0% → 5.9%, China 46.4% → 34.5%, Austria 0.0% → 5.8%, Italy 0.1% → 6.4%.
- July–September 2025 · Duty paid: Sweden 5.7% → 0.0%, Austria 5.8% → 0.0%, Italy 6.4% → 0.1%, all countries 15.7% → 10.1%.
- March 2025 · Duty paid: China 30.6% → 49.9%.
- July 2019 · Duty paid: China 16.8% → 27.8%.
- October 2018 · Duty paid: China 5.7% → 16.0%.
- Xanthan Gum From the People's Republic of China: Final Results of the Expedited First Sunset Review of the Antidumping Duty Order
- Xanthan Gum From the People's Republic of China: Preliminary Results of the Antidumping Duty Administrative Review, and Preliminary Determination of No Shipments; 2016-2017
- Request for Comments Concerning Proposed Modification of Action Pursuant to Section 301: China's Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and Innovation
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 3913.90
- Notice of Action: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation
- Notice of Determination and Request for Comments Concerning Action Pursuant to Section 301: Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation
- Implementing Certain Tariff-Related Elements of the Framework for a United States-Switzerland-Liechtenstein Agreement on Fair, Balanced, and Reciprocal Trade
Where it enters the US
Main ports of entry over the 12 months to August 2026: US imports and share.
Where US exports go
US exports were $28.1M in August 2026, down 2.1% from August 2025, and $326.3M over the last 12 months, down 6.8% on the 12 months before. Fastest-growing market with 3% or more of US exports: Korea, South, up 45%.
| Market | Last 12 months | Share | vs 12 months before |
|---|---|---|---|
| Japan | $62.8M | 19.3% | −6.6% |
| Netherlands | $46.9M | 14.4% | +5.9% |
| Canada | $32.1M | 9.8% | −9.1% |
| Belgium | $26.7M | 8.2% | −38% |
| Mexico | $21.2M | 6.5% | +7.9% |
| Korea, South | $17.9M | 5.5% | +45% |
| China | $15.2M | 4.7% | −39% |
| Brazil | $11.1M | 3.4% | −5.7% |
| Other countries (96) | $92.5M | 28.3% | +0.7% |
| All countries | $326.3M | 100.0% | −6.8% |
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; 120 have reported 2025 so far.
| Market | Imports | vs year before | From the US | US share |
|---|---|---|---|---|
| Korea, South | $411.6Min 2025 | +60% | $19.2M | 4.7% |
| Japan | $240.1Min 2025 | +5.4% | $74.0M | 30.8% |
| Italy | $228.7Min 2025 | +41% | $1.8M | 0.8% |
| Netherlands | $208.2Min 2025 | +27% | $34.2M | 16.4% |
| Germany | $201.2Min 2025 | −11% | $8.6M | 4.3% |
| Switzerland | $178.3Min 2025 | +22% | $1.3M | 0.7% |
| China | $160.9Min 2025 | +6.3% | $17.6M | 10.9% |
| France | $140.4Min 2025 | +9.0% | $3.4M | 2.4% |
The biggest market outside the US is South Korea, which imported $411.6M of this product in 2025, 4.7% of that from the US.
The US supplies 30.8% of imports into Japan, but under 10% into South Korea, Italy and Germany.
Of these, imports into South Korea grew fastest: up 60% from 2024 to 2025.
Related products
Other products under heading 3913: natural polymers and modified natural polymers (including hardened proteins and chemical derivatives of natural rubber), not elsewhere specified, in primary forms. US trade over the 12 months to August 2026.
| Product | US imports | US exports |
|---|---|---|
| Alginic acid, its salts and esters, in primary formsHS 3913.10 | $70.8M | $12.7M |
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.