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
1 declarable lines
Heading 2512 covers siliceous fossil meals such as kieselguhr, tripolite and diatomite, and similar siliceous earths with an apparent specific gravity of 1 or less. It applies whether or not the material is calcined. The heading has one declarable line, 2512.00.00.00, with a general (MFN) rate of Free.
Products in this heading
- Diatomaceous earth filter aid
- Kieselguhr absorbent granules
- Tripolite powder
- Calcined diatomite
- Siliceous earth filler
- Diatomite carrier powder
How to choose the right subheading
- Confirm the product is a siliceous fossil meal or similar siliceous earth, such as kieselguhr, tripolite or diatomite.
- Check that the apparent specific gravity is 1 or less, which is the key heading limit.
- Treat calcined and uncalcined material the same for this heading.
- Separate the goods from natural sands, clays, pumice and talc, which have their own headings.
- Use 2512.00.00.00 for the single declarable line; the provided list shows no further subdivision.
Often confused with
- Heading 2505Natural sand
Natural sands are classified in heading 2505, not as siliceous fossil meals.
- Heading 2507Kaolin
Kaolin is a clay covered by heading 2507, whether or not calcined.
- Heading 2513Pumice
Pumice is an abrasive material of heading 2513.
- Heading 2526Talc
Talc and natural steatite fall in heading 2526, not heading 2512.
Frequently asked questions
What is the HTS code for diatomaceous earth filter aid?
Diatomaceous earth filter aid that meets the heading terms is classified under 2512.00.00.00, general (MFN) rate Free.
What is the duty on kieselguhr?
Kieselguhr of heading 2512 enters under 2512.00.00.00 at the general (MFN) rate of Free.
How do I classify tripolite powder?
Classify tripolite powder under 2512.00.00.00 when it is a siliceous fossil meal or similar siliceous earth with apparent specific gravity of 1 or less; the general (MFN) rate is Free.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.