Butylene Oxide (1,2-Epoxybutane)
Butylene oxide is a three-membered ring epoxide compound (1,2-epoxybutane) classified under HTS 2910.90.10.00 as it fits the chapter definition for separate chemically defined organic epoxides with a three-membered ring. It is primarily used as a reactive intermediate in organic synthesis for producing glycol ethers and surfactants.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as part of saturated cyclic alcohols or derivatives
If the epoxide ring is considered a derivative of a cyclic alcohol rather than a primary epoxide structure, it may classify earlier in Chapter 29 per numerical order rule.
If when imported in mixtures or solutions for safety/transport
Chapter note (e) allows epoxide solutions in solvents for transport to classify here if not rendered suitable for specific use beyond safety.
If for halogenated, sulfonated, or nitrated derivatives
Chapter notes specify that halogenated/sulfonated epoxide derivatives classify with parent epoxides, but heavily modified versions may shift to earlier oxygen-function headings.
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The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide detailed chemical purity analysis and Safety Data Sheets (SDS) as epoxides are hazardous materials requiring UN-approved packaging
• Ensure classification as pure butylene oxide; mixtures exceeding 50% may fall under heading 3824 as chemical preparations
• Comply with TSCA registration for chemical imports and DOT hazardous material declarations to avoid customs delays
Related Products under HTS 2910.90.10.00
2-Methyloxirane (Isobutylene Oxide)
2-Methyloxirane, also known as isobutylene oxide, is a branched epoxide with a three-membered ring, directly matching HTS 2910.90.10.00 for butylene oxide specifications. It serves as a key intermediate in manufacturing pharmaceuticals and polymer additives.
Butylene Oxide Technical Grade 99%
Technical grade butylene oxide at 99% purity is a chemically defined epoxide with a three-membered ring, qualifying under HTS 2910.90.10.00 per chapter note (a) allowing minor impurities. Commonly used in industrial production of propylene glycol ethers.
1,2-Epoxy-2-Methylpropane
1,2-Epoxy-2-methylpropane is a specific butylene oxide isomer featuring the required three-membered epoxide ring, classified under HTS 2910.90.10.00. It functions as a versatile alkylating agent in fine chemical manufacturing.
Butylene Oxide with Stabilizer
Stabilized butylene oxide contains added preservatives necessary for transport while maintaining its identity as a chemically defined three-membered ring epoxide under HTS 2910.90.10.00 per chapter note (f). Used in polymer initiator production.