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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

Isovaleraldehyde Precursor Isobutanal from Japan — Import Duty Rate | HTS 2912.19.40.00