Kieselguhr 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.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the kieselguhr is mixed with binders to form insulating boards or blocks
Mixed insulating materials in shaped form fall under Chapter 68.
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 product is not mixed with cement, gypsum, or other binders, which would move it to Chapter 68 or 38
• Provide documentation of the product's specific gravity
• If the product is sold as a construction material, check for building code compliance
Related Products under Tariff item 2512.00.00
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.
Calcined 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.
Diatomaceous 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.
Diatomaceous 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.
Diatomite 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.
Kieselguhr 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.