1,3-Propanediol
1,3-Propanediol is a colorless, viscous liquid diol with two hydroxyl groups on a three-carbon chain, classified under HTS 2905.39.90.00 as an acyclic diol other than ethylene glycol or glycerol. It is widely used as a monomer in polyester fiber production and as a solvent.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with >2% other substances for specific industrial use
Blends exceeding simple stabilization become chemical preparations of Chapter 38 rather than pure organic compounds.
If containing >50% methanol by weight
Methanol-containing diols fall under separate subheading for specific alcohol admixtures per HTS structure.
If for petroleum-derived hydrocarbon mixtures
Petroleum-origin diols may classify under Chapter 27 if primarily hydrocarbon-based rather than chemically defined organics.
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Import Tips & Compliance
• Provide detailed chemical analysis certificates confirming purity and acyclic diol structure to avoid reclassification as mixtures
• Ensure SDS and CAS number (504-63-2) documentation matches HTS description for acyclic alcohols
• Verify stabilizer additions comply with chapter note (f) to prevent exclusion from Chapter 29
Related Products under HTS 2905.39.90.00
1,4-Butanediol
1,4-Butanediol (BDO) is an acyclic diol used primarily in polyurethane and spandex production, falling under HTS 2905.39.90.00 as a straight-chain diol other than the principal named diols. Its two terminal hydroxyl groups define its acyclic alcohol classification.
1,5-Pentanediol
1,5-Pentanediol is a linear five-carbon acyclic diol used in cosmetics, inks, and polymer synthesis, classified under HTS 2905.39.90.00. Its structure fits perfectly within the 'other acyclic diols' category excluding ethylene glycol and glycerol.
2-Methyl-1,3-Propanediol
2-Methyl-1,3-propanediol (MPDiol) is a branched acyclic diol used in polyester resins and coatings, classified under HTS 2905.39.90.00 as an 'other' diol. The methyl substitution maintains its acyclic alcohol character.
Neopentyl Glycol
Neopentyl glycol (2,2-dimethyl-1,3-propanediol) is a sterically hindered acyclic diol used in alkyd resins and plasticizers, falling under HTS 2905.39.90.00. Its gem-dimethyl structure provides hydrolysis resistance in coatings.
1,6-Hexanediol
1,6-Hexanediol is a long-chain acyclic diol used in polyurethane elastomers and acrylates, classified under HTS 2905.39.90.00. Its six-carbon chain provides flexibility in polymer applications.
Propylene Glycol Methyl Ether Diol
This ether-diol combines propylene glycol structure with methyl ether functionality, used as a coalescing aid in paints, under HTS 2905.39.90.00 as an acyclic diol derivative. The dual hydroxyl/ether nature fits the 'other' category.