1,3-Butylene Glycol
1,3-Butylene glycol (1,3-butanediol) is a chemically defined acyclic diol with two hydroxyl groups on a four-carbon chain. It falls under HTS 2905.39.10.00 as a specific butylene glycol isomer used in cosmetics and pharmaceuticals. This classification applies to pure forms without impurities altering its chemical definition.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mixed with >10% other solvents or additives for specific uses
Mixtures exceeding Chapter 29 purity limits classified as chemical preparations, not pure compounds.
If imported as a technical-grade mixture of butylene glycol isomers
Other acyclic diols not specifically enumerated fall under the residual 'other' subheading.
If pre-mixed into retail cosmetic preparations
Mixtures put up for retail sale as cosmetics exclude from Chapter 29 per exclusion note (g).
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Import Tips & Compliance
• Provide Certificate of Analysis confirming 98%+ purity as butylene glycol; ensure solvent-free packaging per Chapter 29 note (e); declare exact isomer to avoid reclassification
Related Products under HTS 2905.39.10.00
1,4-Butylene Glycol
1,4-Butylene glycol (1,4-butanediol) is an acyclic diol serving as a solvent and chemical intermediate. Classified under HTS 2905.39.10.00 for its specific chemical structure as butylene glycol. Used in polyurethane production and humectants.
Cosmetic-Grade Butylene Glycol
Pharmaceutical/cosmetic-grade 1,3-butylene glycol with >99.5% purity for skincare formulations. Meets HTS 2905.39.10.00 as a separate chemically defined diol per Chapter 29 note (a). Stabilized only for transport safety.
Industrial 1,4-Butanediol
Technical-grade 1,4-butanediol for plasticizer and polymer synthesis, classified as butylene glycol under HTS 2905.39.10.00. Chemically defined acyclic diol meeting Chapter 29 purity standards.
Humectant Butylene Glycol USP
USP-grade butylene glycol used as humectant in pharmaceuticals and cosmetics. Falls under HTS 2905.39.10.00 as a pure acyclic diol without excluded additives.
2,3-Butylene Glycol
2,3-Butylene glycol, a less common diol isomer used in fermentation products and chiral synthesis. Classified under HTS 2905.39.10.00 as a chemically defined butylene glycol.