Tripropylene Glycol
Tripropylene glycol is an acyclic triol oligomer used as a reactive diluent in polyurethanes and epoxy resins, falling under HTS 2905.39.90.00 as an 'other' acyclic alcohol derivative. Its propoxylated structure maintains diol-like reactivity.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If high molecular weight polymers
Polymer-grade polyols (>1000 MW) classify under Chapter 39 plastics.
If functional fluid formulations
Hydraulic fluid or lubricant base mixtures shift to preparations.
If ether alcohol classification
Propylene oxide-derived ethers sometimes grouped by ether functionality.
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Import Tips & Compliance
• Specify exact oligomer distribution (monodisperse vs polydisperse) in technical data
• Distinguish from unreactive polypropylene glycol (Chapter 39)
• Provide viscosity and hydroxyl number confirming reactive diol nature
Related Products under HTS 2905.39.90.00
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.
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.