Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less.
Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less. > Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less.
Duty Rate (from China)
Products classified under Tariff item 2512.00.00.00
Calcined Diatomite Granules
Calcined diatomite granules, a siliceous fossil meal processed by heat treatment, used in cat litter and soil amendments. The product retains an apparent specific gravity of 1 or less, meeting the tariff item's requirement for calcined siliceous earths.
2512.00.00Calcined Tripolite
Calcined tripolite, a heat-treated siliceous earth used as an extender in paints and coatings. Its apparent specific gravity remains at or below 1, qualifying it as a siliceous fossil meal under this tariff item.
2512.00.00Diatomaceous Earth for Agriculture
Natural ground diatomaceous earth for agricultural use as a pesticide dust. This unprocessed siliceous fossil meal has a low apparent specific gravity, fitting the tariff item's scope for crude or mechanically processed products.
2512.00.00Diatomaceous Earth Powder
Natural diatomite powder, a siliceous fossil meal from diatom skeletons, used as a filtration aid in food and beverage processing. With an apparent specific gravity under 1, it is directly covered by this tariff item as an unprocessed siliceous earth.
2512.00.00Diatomite Filtration Media
Powdered diatomite graded for pool and aquarium filtration, with an apparent density under 1. This siliceous fossil meal is classified here as a processed siliceous earth, provided it is not mixed with other filter media.
2512.00.00Kieselguhr Filter Aid
Calcined kieselguhr used as a filter aid in brewing and wine production, featuring high porosity and specific gravity under 1. This siliceous fossil meal is explicitly named in the tariff item and qualifies as calcined.
2512.00.00Kieselguhr Insulation Filler
Powdered kieselguhr for thermal insulation in construction, with ultra-low density under 1. As a siliceous fossil earth, it is covered by this tariff item when not mixed with binders or other materials.
2512.00.00Natural Kieselguhr Powder
Uncalcined kieselguhr powder from fossil deposits, used as an insecticide carrier due to its porous structure and low specific gravity. This raw siliceous earth fits the tariff item as a crude or mechanically processed product.
2512.00.00Siliceous Earth Absorbent
Low-density siliceous fossil earth based on diatomite, used for oil spill cleanup and industrial absorbents. With an apparent specific gravity of 1 or less, it qualifies as a siliceous fossil meal under this tariff item.
2512.00.00Tripolite Diatomite
Tripolite, a lightweight siliceous fossil meal similar to diatomite, used in absorbents and fillers, with an apparent specific gravity of 1 or less. This uncalcined siliceous earth is directly covered by the tariff item.