Isovaleraldehyde Precursor Isobutanal from Japan
High-purity isobutanal serving as precursor for isovaleraldehyde synthesis in flavor chemistry, under HTS 2912.19.40.00 for acyclic aldehydes. Critical for green leaf volatile production in perfumes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include downstream synthesis pathway documentation if requested by CBP for end-use verification
• Purity >99.8% required; lower grades risk 2912.19.50 reclassification
• Refractive index (1.375-1.377) testing prevents substitution fraud