Potassium Feldspar Powder from China
Potassium feldspar, also known as orthoclase, is a common rock-forming mineral mined and ground into powder for use as a flux in ceramic glazes and porcelain production. This product falls under HTS 2529.10.00.00 as it is natural feldspar that has been crushed and milled but remains chemically unchanged, classified specifically as feldspar in Chapter 25.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify purity and particle size via lab testing to confirm classification as feldspar rather than processed mineral products
• Provide geological origin certificates and mining extraction proof to avoid misclassification as synthetic chemicals
• Ensure bulk packaging complies with dust control regulations for mineral imports to prevent port delays