High-Purity Barium Carbonate for Optical Glass from United States
Ultra-high purity barium carbonate (>99.9%) essential for manufacturing high-refractive index optical glass like barium flint. This pure inorganic carbonate is classifiable under tariff item 2836.60.00, per Note 1 to Chapter 28.
Duty Rate — United States → Canada
0%
Import Tips
• Provide a certificate of analysis showing purity above 99.9% to justify the high-value classification
• Ensure the product is not doped with other elements for electronic use, which would fall under Chapter 38
• Keep records of the manufacturing process for customs verification