2711.14.00/Liquefied Isobutylene (2-Methylpropene)/Japan

Liquefied Isobutylene (2-Methylpropene) from Japan

Liquefied isobutylene, an unsaturated C4 olefin used in methyl methacrylate and butyl rubber production. Covered by HTS 2711.14.00 as liquefied butylene (including branched isomers).

Duty Rate — Japan → United States

0%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Document isobutylene >95% via mass spectrometry to distinguish from isobutane

• Ship in dedicated C4 olefin spheres with polymerization inhibitors