2,4-Dinitrophenylhydrazine from Mexico
2,4-Dinitrophenylhydrazine (DNPH) is an aromatic hydrazine derivative with nitro groups on the phenyl ring, used primarily for carbonyl compound identification. Classified under HTS 2928.00.25.00 as an aromatic derivative of hydrazine per Chapter 29 scope for separate chemically defined compounds. Its structure maintains the hydrazine parent with aromatic substitution.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Label as hazardous (toxic, explosive risk) and comply with DOT/IATA shipping regulations
• Include analytical grade certificates to distinguish from industrial mixtures
• Check for nitroaromatic restrictions under chemical weapons conventions