Dipropyl Ketone (4-Heptanone) from Mexico
Dipropyl ketone (CH3CH2CH2COCH2CH2CH3), or 4-heptanone, is an acyclic ketone used in organic synthesis and as a high-boiling solvent. It is classified in HTS 2914.19.00.00 as 'other' acyclic ketones without additional oxygen functions, per Chapter 29 definitions. This ensures proper distinction from aromatic or quinone structures.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096%Pharmaceuticals Annex IV: patented pharma articles — 100% 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
• Include GC-MS reports proving chemical purity >98% to avoid mixture classification; comply with VOC regulations
• Avoid common error of declaring as 'ketone oil' which triggers 1518/1522 vegetable oil headings