Glass Grade Feldspar Powder from Japan
Feldspar finely milled to uniform particle size for soda-lime glass production, providing network formers without further refinement. Falls under HTS 2529.10.00.00 as it's crude feldspar, not chemically synthesized.
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
• Test for alkali content variability which affects glass batch chemistry and classification proofs
• Label containers with flash point warnings if fines pose dust explosion risk during handling
• File entry with silica (SiO2) percentages to preempt challenges from overly fine grinding claims