Isovaleraldehyde Precursor Isobutanal from China
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 — China → United States
18%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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