6901.00.00.00
Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths
Classification path
- Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 30%
- Unit of quantity
- t
About heading 6901
Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths
Heading 6901 covers ceramic goods made from siliceous fossil meals such as kieselguhr, tripolite, or diatomite, or from similar siliceous earths. The heading has a single declarable line, 6901.00.00.00, so all goods that meet the material description are classified there. The general (MFN) duty rate is Free.
Full guide to heading 6901Products in this heading
- Diatomite bricks
- Kieselguhr blocks
- Tripolite tiles
- Diatomaceous earth ceramic boards
- Siliceous fossil meal ceramic shapes
- Diatomite insulating bricks
Frequently asked questions
What is the HTS code for diatomite bricks?
Diatomite bricks made of siliceous fossil meals are classified under 6901.00.00.00, with a general (MFN) rate of Free.
What is the duty on kieselguhr blocks?
Kieselguhr blocks of heading 6901 enter under 6901.00.00.00 and pay a general (MFN) rate of Free.
How do I classify tripolite ceramic tiles?
If the tiles are ceramic goods of tripolite or similar siliceous earth, use 6901.00.00.00, which has a general (MFN) rate of Free. Ordinary wall or paving tiles are classified in another heading.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.