Coated Calcium Carbonate Stearic Acid from Canada
Calcium carbonate particles surface-treated with stearic acid for hydrophobic properties, still classified as base compound under HTS 2836.50.00.00 if coating <5%. Used in polyolefin films and sheets.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Quantify coating percentage via TGA analysis (<5% maintains compound status)
• Test for dispersion quality in LLDPE matrix per ASTM standards
• Declare organic coating components separately on entry documents