Potassium Feldspar Powder
Potassium feldspar powder, also known as orthoclase, is a naturally occurring rock-forming mineral that is mined and ground into a fine powder for use as a flux in ceramic glazes and porcelain production. The grinding is a mechanical process that does not alter the mineral's chemical structure, and the product is not mixed with other materials. This makes it classifiable as feldspar under tariff item 2529.10.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is leucite instead of feldspar
Leucite is a different mineral with its own classification.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the powder is pure potassium feldspar without added chemical fluxes or binders
• Keep records of the mining and processing steps to show only mechanical grinding was used
• If the powder is blended with other minerals, it may not qualify for this tariff item
Related Products under Tariff item 2529.10.00
Ceramic Grade Feldspar
Ceramic grade feldspar is a naturally occurring mineral that has been crushed, ground, and graded for use in ceramics, with low iron content to prevent discoloration in tiles and sanitaryware. It is processed only by mechanical means, such as crushing and grinding, which does not alter its chemical structure, and it is not mixed with other substances. This places it squarely under tariff item 2529.10.00 as feldspar in its crude or mechanically processed state.
Glass Grade Feldspar Powder
Glass grade feldspar powder is natural feldspar that has been finely milled to a uniform particle size for use in soda-lime glass production. The milling process is a mechanical physical process that does not change the mineral's structure, and the powder is not chemically synthesized or mixed with other materials. Therefore, it qualifies as feldspar under tariff item 2529.10.00.
Sodium Feldspar Lumps
Sodium feldspar lumps, also known as albite, are extracted from pegmatite deposits and are used in glass manufacturing as a source of alumina and silica. The lumps are in their natural state, having undergone only extraction and possibly simple washing or crushing, which are permitted processes under the chapter notes. As raw feldspar, this product falls under tariff item 2529.10.00.