What is HS code 251200 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-6 · Subheading
251200
Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less
Heading 2512 — Siliceous fossil meals (e.g. kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less
Chapter 25: Salt; sulphur; earths and stone
Plain-language overview
Use HS-6 251200 when importing or exporting siliceous fossil meals such as kieselguhr, tripolite, and diatomite. These materials are often used in filtration, as absorbents, or in construction products. For example, a shipment of diatomaceous earth for use in pool filters would fall under this code.
This code specifically covers siliceous earths with an apparent specific gravity of 1 or less, distinguishing them from heavier mineral products. For instance, while HS-6 251210 includes calcined forms of these materials, HS-6 251200 encompasses the uncalcined varieties.
When classifying your products, consider the end-use. If your product is intended for use as a filler or a filtering agent, it likely qualifies under this HS-6. However, if it has been calcined, you may need to look at a different classification.
Be mindful of packaging and labeling. Products classified under this HS-6 should clearly indicate their composition, such as 'diatomaceous earth' or 'kieselguhr,' to avoid confusion with other mineral products that may have different HS codes.
Keywords & topics
Useful terms traders and brokers use for this HS-6 subheading.
siliceous fossil meals · kieselguhr · diatomaceous earth · tripolite · absorbent materials · filtration agents · construction fillers · uncalcined earths · mineral classification · specific gravity · industrial absorbents · natural filter aids
Examples
Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.
- Diatomaceous earth used for pool filtration
- Kieselguhr for use in beer and wine filtration
- Tripolite as an absorbent in industrial applications
- Uncalcined siliceous earth for use in construction materials
- Natural diatomite for horticultural use
- Siliceous fossil meal in cosmetics as a thickener
- Absorbent earth for oil spill cleanup
- Natural filter aid in food processing
Common questions
Frequent classification questions with short practical guidance.
How to classify diatomaceous earth?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
Is kieselguhr calcined or uncalcined?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are siliceous fossil meals?
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Can I use HS-6 251200 for construction materials?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What products fall under HS-6 251200?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to label diatomaceous earth for shipping?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What is the specific gravity of kieselguhr?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Related topics
Common real-world topics that come up during code comparison.
How to classify siliceous fossil meals for import
Check the exact product specs and destination-country tariff notes before finalizing the code.
Differences between calcined and uncalcined kieselguhr
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
What are the applications of diatomaceous earth?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Shipping requirements for tripolite and similar earths
Use this as a checklist topic, then confirm legal requirements with your broker or customs advisor.
Understanding HS codes for filtration materials
Use this topic to narrow your shortlist, then validate the final code against legal wording.
How to determine the specific gravity of siliceous earths
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Best practices for packaging diatomaceous earth
Use this topic to narrow your shortlist, then validate the final code against legal wording.
What is the end-use of kieselguhr in industry?
Use this topic to narrow your shortlist, then validate the final code against legal wording.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of products are classified under HS-6 251200?
- HS-6 251200 covers siliceous fossil meals like kieselguhr, tripolite, and diatomite, typically used in filtration, absorbents, and construction.
- How do I know if my product is calcined or uncalcined?
- Calcined products have been heated to high temperatures to remove moisture and change their properties. Check the product specifications or consult your supplier.
- Can I use HS-6 251200 for agricultural applications?
- Yes, diatomaceous earth and similar materials under this code are often used in horticulture and as soil amendments.
- What is the significance of specific gravity in classification?
- Specific gravity helps determine whether a product fits under this HS-6. Products with an apparent specific gravity of 1 or less qualify.
- Are there any special labeling requirements for these products?
- Yes, ensure that your products are labeled clearly with their composition, such as 'diatomaceous earth' or 'kieselguhr,' to comply with customs regulations.
- What should I do if I'm unsure about the classification?
- Consider consulting with a customs broker or trade expert who can provide guidance based on your specific product and its intended use.
- Is there a difference between HS-6 251200 and HS-6 251210?
- Yes, HS-6 251200 covers uncalcined siliceous fossil meals, while HS-6 251210 includes those that have been calcined.
- What are common uses for kieselguhr?
- Kieselguhr is commonly used in filtration processes for beverages, as an absorbent in industrial applications, and as a filler in various products.
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