Spectroscopy Grade Chloroform-d (Deuterated) from Mexico
Deuterated chloroform (CDCl3), isotopically pure trichloromethane-d for NMR spectroscopy. Though isotopically substituted, classified under parent compound HTS 2903.13.00.00 per Chapter 29 isomer provisions.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
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
• Provide 13C/2H isotopic analysis; >99.5% D-content required for this specific classification
• Store/seal under nitrogen; declare as UN1888 despite lower toxicity profile
• Distinguish from regular chloroform via CAS 865-49-6 vs 67-66-3 in documentation