High Purity Synthetic Calcium Carbonate from Japan
99.9% pure synthetic CaCO3 produced via controlled precipitation for electronic ceramics and high-voltage insulators, HTS 2836.50.00.00. Ultra-low impurity levels critical for dielectric properties.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• ICP-MS analysis required showing <1 ppm Na, <5 ppm Fe impurities
• Validate polymorph content (100% calcite) via XRD for ceramic pressing
• ESD-safe packaging for electronic component manufacturers