Decolorizing earths and fuller's earth
Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Other clays > Decolorizing earths and fuller's earth
Duty Rate (from China)
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
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)
Products classified under HTS 2508.40.01.20
Activated Attapulgite Decolorizing Earth
Finely ground attapulgite clay activated for maximum adsorption capacity, used primarily in oil refining to remove color impurities and contaminants from petroleum products. Classified under HTS 2508.40.0120 as decolorizing earth due to its high surface area and selective adsorption properties for organic compounds. Not calcined or expanded, distinguishing it from clays in other headings.
Fuller's Earth Bleaching Clay
Bentonite-based fuller's earth processed for use in edible oil refining, effectively removing color bodies, soaps, and gums through adsorption. Falls under HTS 2508.40.0120 as fuller's earth, a natural clay with high montmorillonite content valued for its bleaching action. Supplied in powdered form without further chemical modification.
Florisil Magnesium Silicate Decolorizer
Synthetic magnesium silicate adsorbent similar to natural decolorizing earths, used in pharmaceutical purification and analytical chemistry for removing impurities. Classified under HTS 2508.40.0120 when presented as decolorizing earth equivalent, despite synthetic origin matching natural performance specs. Fine powder form optimized for column chromatography.
Bentonite Fuller's Earth for Cosmetics
High-purity fuller's earth derived from bentonite deposits, used in facial masks and oil-absorbing cosmetics for its natural clarifying properties. HTS 2508.40.0120 classification as fuller's earth based on adsorptive mineral structure, excluding cosmetic preparations of Chapter 33. Milled to fine particle size for skincare formulations.
Diatomaceous Earth Decolorizing Grade
Calcined diatomite selected for decolorizing applications in sugar refining and beverage processing, acting as a filter aid with adsorptive properties. While primarily siliceous, classified under HTS 2508.40.0120 when specifically for decolorizing rather than pure filtration. Distinguished from expanded forms in 6806.
Zeolite Decolorizing Earth
Natural zeolite powder with crystalline aluminosilicate structure used for decolorization in wastewater treatment and edible oil processing. HTS 2508.40.0120 applies to its role as decolorizing earth based on adsorptive function, not molecular sieve applications. Supplied as micronized powder for optimal contact efficiency.
Sepiolite Fuller's Earth
Fibrous clay mineral sepiolite processed as fuller's earth for cat litter decolorization and industrial absorbents. High porosity and adsorption make it ideal for oil spill cleanup and purification. Classified HTS 2508.40.0120 as fuller's earth, distinct from meerschaum in 2530.
Montmorillonite Bleaching Earth
Acid-activated montmorillonite clay for vegetable oil bleaching, removing chlorophyll and carotenoids effectively. Core component of fuller's earth with 2:1 layer silicate structure. HTS 2508.40.0120 designation reflects its fuller's earth characteristics and processing.