Nano Calcium Carbonate from Mexico
Nano-sized calcium carbonate particles (1-100 nm) produced via precipitation for high-performance applications, classified as calcium carbonate under HTS 2836.50.00.00. Used in tire rubber reinforcement, coatings, and advanced composites.
Duty Rate — Mexico → United States
10%
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
• Include SEM/TEM analysis proving nanoscale dimensions to justify premium classification
• Declare surface treatment agents separately if >5% by weight to avoid mixture reclassification
• Comply with TSCA pre-notice for novel nanomaterials entering US commerce