Furfural
Furfural is an unsaturated heterocyclic aldehyde derived from agricultural waste, featuring an unfused furan ring with oxygen hetero-atom, used in resins and flavor production. Classified under HTS 2932.19.51.00 as 'other' furan ring compounds per Chapter 29 hierarchy. Meets criteria for separate chemically defined organic compounds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily recognized as unsaturated aldehyde
Aldehyde function may take precedence over furan ring per numerical order rule in Chapter 29 notes.
If crude furfural from bio-refining <80% purity
Industrial byproducts classified as mixtures rather than chemically defined compounds.
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Import Tips & Compliance
• Include GC-MS analysis verifying furan ring structure and aldehyde function to distinguish from Chapter 29 exclusions
• Declare as UN 1199 flammable liquid; ensure drum packaging meets DOT specifications
• Watch for reclassification if diluted beyond Chapter 29 note (d) water solubility limits
Related Products under HTS 2932.19.51.00
Tetrahydrofuran (THF)
Tetrahydrofuran is a saturated heterocyclic compound containing a five-membered furan ring with one oxygen hetero-atom, used as a solvent in chemical reactions and polymer manufacturing. It falls under HTS 2932.19.51.00 as a hydrogenated furan ring compound with oxygen hetero-atom only. This classification covers unfused furan ring structures per Chapter 29 notes.
2-Methylfuran
2-Methylfuran is a simple alkyl-substituted furan ring compound with oxygen hetero-atom only, used as a biofuel component and flavoring agent. Falls under HTS 2932.19.51.00 as an unfused furan ring 'other' compound. Qualifies as chemically defined per Chapter 29 note (a).
Furfuryl Alcohol
Furfuryl alcohol contains an unfused furan ring with a hydroxymethyl substituent and oxygen hetero-atom only, used in foundry resins and polymers. HTS 2932.19.51.00 applies as hydrogenated-capable furan 'other' compound. Excludes alcoholates per Chapter 29 note (D).
2,5-Dimethylfuran
2,5-Dimethylfuran features an unfused furan ring with symmetric methyl substitutions at positions 2 and 5, used in organic synthesis. Classified HTS 2932.19.51.00 as oxygen-only heteroatom furan 'other'. Chemically defined isomer mixture excluded unless acyclic.
2-Furoic Acid
2-Furoic acid contains a carboxylic acid function attached to unfused furan ring with oxygen hetero-atom only, used in pharmaceuticals. HTS 2932.19.51.00 as furan 'other' per numerical classification rule. Acid function subordinate to ring structure.
Tetrahydrofurfuryl Alcohol
Tetrahydrofurfuryl alcohol is the hydrogenated alcohol derivative of furfuryl alcohol with unfused oxygen-heteroatom ring. Used as green solvent in coatings. HTS 2932.19.51.00 covers hydrogenated furan structures meeting Chapter 29 purity criteria.