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Fumaric Acid for Paper Sizing

Fumaric acid used in alkyl ketene dimer production for paper sizing agents. Pure form qualifies under HTS 2917.19.1700 as other acyclic polycarboxylic acid per Chapter 29 chemical compound provisions.

Import Duty Rates by Country of Origin

Origin Country	MFN Rate	Ch.99 Surcharges	Total Effective Rate
🇨🇳China	4.2%	+37.5%	41.7%
🇲🇽Mexico	4.2%	+10.0%	14.2%
🇨🇦Canada	4.2%	+10.0%	14.2%
🇩🇪Germany	Free	+10.0%	10%
🇯🇵Japan	Free	+12.5%	12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3809.92.50.00Higher: 43.5% vs 41.7%

If pre-reacted with fatty acids for sizing

Chemical finishing agents for paper/textiles in Chapter 38.

2915.90.50Lower: 41.3% vs 41.7%

If saturated analog (succinic acid) substitution

Different saturation level changes to earlier saturated acid heading.

3824.99.93Higher: 42.5% vs 41.7%

If diluted for direct paper coating application

Preparations for specific use exclude from pure Chapter 29.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

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Import Tips & Compliance

• Specify paper industry end-use in commercial invoice

• Monitor TSCA inventory status for US chemical import

• Ensure moisture content <0.5% for sizing grade specs

Related Products under HTS 2917.19.17.00

Fumaric Acid (Industrial Grade)

Pure fumaric acid (trans-butenedioic acid) used primarily in industrial applications such as polymer production and chemical synthesis. This acyclic polycarboxylic acid falls under HTS 2917.19.1700 as 'other' fumaric acid, distinct from food-grade preparations. It meets Chapter 29 criteria for separate chemically defined organic compounds.

Fumaric Acid Powder (Technical Grade)

Technical-grade fumaric acid in fine powder form for use in plastics manufacturing and as an intermediate in pharmaceutical synthesis. Classified under HTS 2917.19.1700 as other acyclic polycarboxylic acid (fumaric acid), meeting Chapter 29 definition for chemically defined compounds without food-specific additives.

Fumaric Acid Flakes (Pharma Intermediate)

Fumaric acid in flake form serving as intermediate for pharmaceutical fumarate salts like dimethyl fumarate. This pure acyclic dicarboxylic acid qualifies for HTS 2917.19.1700 as 'other' fumaric acid per Chapter 29 notes for chemically defined organic compounds.