Calcium Carbonate Filler Masterbatch from Mexico
Masterbatch containing 70-80% calcium carbonate dispersed in polymer carrier, but classified under HTS 2836.50.00.00 when imported as chemical concentrate. Used for plastics compounding to reduce costs.
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
• Provide formulation sheets showing CaCO3 >50% to maintain inorganic compound status
• Sample for CBP chemistry lab if polymer content approaches 50% threshold
• Declare exact CaCO3/polymer ratio to prevent reclassification as plastic pellets