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Aldehydes, whether or not with other oxygen function; cyclic polymers of aldehydes; paraformaldehyde. > Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: > Other > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2917.19.00
Ferrous Fumarate Iron Supplement Bulk
Bulk ferrous fumarate powder for compounding into dietary iron supplements, containing 32.5% elemental iron. This is a ferrous salt of fumaric acid, an acyclic polycarboxylic acid, and qualifies as a separate chemically defined organic compound under Chapter 29.
Ferrous Fumarate Pharmaceutical Grade
High-purity ferrous fumarate meeting Ph. Eur. standards for use in iron deficiency treatments and multivitamin production. It is a chemically defined iron(II) salt of fumaric acid, an acyclic polycarboxylic acid, and falls under tariff item 2917.19.00 as an 'Other' acyclic polycarboxylic acid derivative.
Ferrous Fumarate USP Powder
Ferrous fumarate USP powder is a chemically defined iron(II) salt of fumaric acid, used primarily as an iron supplement in pharmaceutical formulations. It falls under tariff item 2917.19.00 as a derivative of an acyclic polycarboxylic acid, specifically fumaric acid.
Ferrous Fumarate with Stabilizer
Ferrous fumarate containing minimal ascorbic acid stabilizer for transport stability, per Chapter 29 note (f). The stabilizer is necessary for preservation or transport and does not render the product particularly suitable for specific use, so it remains classified under tariff item 2917.19.00.
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 tariff item 2917.19.00 as 'Other' fumaric acid per Chapter 29 notes, as it is a separate chemically defined compound.
Fumaric Acid for Biodegradable Polymer Synthesis
Fumaric acid serving as monomer for poly(butylene fumarate) biodegradable plastics. As a pure acyclic polycarboxylic acid, it is a separate chemically defined organic compound and falls under tariff item 2917.19.00 as 'Other' acyclic polycarboxylic acids.
Fumaric Acid for Paper Sizing
Fumaric acid used in alkyl ketene dimer production for paper sizing agents. Pure form qualifies under tariff item 2917.19.00 as 'Other' acyclic polycarboxylic acid per Chapter 29 chemical compound provisions, being a separate chemically defined compound.
Fumaric Acid for Unsaturated Polyester Resins
High-purity fumaric acid specifically for synthesizing unsaturated polyester resins in composites. As a separate chemically defined acyclic polycarboxylic acid, it falls under tariff item 2917.19.00 as 'Other' per Chapter 29 scope.
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 tariff item 2917.19.00 as 'Other' fumaric acid, being a separate chemically defined organic compound.
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 tariff item 2917.19.00 as 'Other' acyclic polycarboxylic acid (fumaric acid), being a separate chemically defined compound.
Fumaric Acid with Transport Stabilizer
Fumaric acid containing phosphate stabilizer solely for safe transport, used in chemical manufacturing. Chapter 29 note (f) allows such additions; remains classified as tariff item 2917.19.00 as 'Other' fumaric acid, provided the stabilizer is necessary for preservation or transport.
Microencapsulated Ferrous Fumarate
Ferrous fumarate microencapsulated with lipid matrix to mask taste for supplement applications, but imported as bulk chemical. The core chemically defined ferrous salt remains classifiable under tariff item 2917.19.00, as the microencapsulation does not render the product particularly suitable for a specific use beyond general supplement use.
Pharmaceutical Fumaric Acid (Dimethyl Fumarate Precursor)
Ultra-pure fumaric acid for synthesis of dimethyl fumarate (Skilarence® active ingredient for psoriasis). Meets tariff item 2917.19.00 as a chemically defined acyclic polycarboxylic acid without Chapter 29 exclusions.
Stabilized Fumaric Acid with Anti-Caking Agent
Fumaric acid with minimal silicon dioxide anti-caking agent for transport stability, used in resin production. Permitted under Chapter 29 note (f) as a stabilizer necessary for preservation; classified as tariff item 2917.19.00 as 'Other' fumaric acid.