Isobutyl Methyl Ether from Japan
Isobutyl methyl ether is a branched acyclic ether from isobutanol and methanol, employed as a specialty solvent. Classified under HTS 2909.19.18.00 as 'other' acyclic ethers of monohydric alcohols per Chapter 29 note (a). Its structure excludes classification with polyhydric derivatives.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.629.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide refractive index and boiling point data matching specification
• Declare branched vs linear isomer clearly on customs documentation
• Ensure compatibility with stainless steel storage to prevent reactions