Cobaltous Carbonate from Mexico
Though primarily under 2836, basic or commercial cobalt carbonates not fitting pure forms classify here as cobalt oxide equivalents. Used in porcelain glazes; chemically defined per Chapter notes.
Duty Rate — Mexico → United States
0.1%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Cross-check against 2836.50 for pure carbonates; use chemical analysis
• Label as 'not for human consumption' to avoid food additive scrutiny
• Declare CAS number (10048-94-3) accurately for customs matching