What is HS-4 2512 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-4 · 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-4 2512 when importing siliceous fossil meals such as kieselguhr, tripolite, or diatomite. For example, if you're shipping diatomaceous earth for use in filtration or as an absorbent, this code applies. It covers both calcined and uncalcined forms with a specific gravity of 1 or less.
When deciding between HS-6 lines, note that 251200 encompasses all types of siliceous fossil meals, regardless of their processing state. If your product is a natural diatomite or a processed version, it still falls under this code. Be aware that specific gravity is a key factor in classification.
If you are unsure about the specific gravity of your product, conduct a test to confirm it is 1 or less, as this will determine eligibility under this heading. This classification is crucial for customs clearance and determining applicable duties.
Keywords & topics
Useful terms traders and brokers use for this HS-4 heading.
siliceous fossil meals · kieselguhr import code · diatomite shipping · tripolite classification · siliceous earth customs · calcined diatomaceous earth · specific gravity 1 or less · import regulations for siliceous earths · HS-4 2512 details · siliceous earth applications
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- Diatomaceous earth for filtration systems
- Kieselguhr used in food and beverage processing
- Tripolite for use in pool filters
- Natural siliceous earth for agricultural applications
- Calcined siliceous materials for industrial uses
Common questions
Frequent classification questions with short practical guidance.
How to classify diatomaceous earth for import?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
What are siliceous fossil meals?
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Is kieselguhr considered calcined?
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What is the specific gravity requirement for HS-4 2512?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How do I determine if my product falls under HS-4 2512?
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.
importing siliceous fossil meals like kieselguhr
Check the exact product specs and destination-country tariff notes before finalizing the code.
how to classify tripolite for customs
Check the exact product specs and destination-country tariff notes before finalizing the code.
understanding HS-4 2512 for diatomite
Use this topic to narrow your shortlist, then validate the final code against legal wording.
specific gravity testing for siliceous earths
Use this topic to narrow your shortlist, then validate the final code against legal wording.
shipping diatomaceous earth for filtration
Use this topic to narrow your shortlist, then validate the final code against legal wording.
what to know about HS-6 251200
Use this topic to narrow your shortlist, then validate the final code against legal wording.
calcined vs uncalcined siliceous meals
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
customs clearance for kieselguhr shipments
Check the exact product specs and destination-country tariff notes before finalizing the code.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of products fall under HS-4 2512?
- HS-4 2512 covers siliceous fossil meals, including kieselguhr, tripolite, and diatomite, whether calcined or uncalcined.
- How do I know if my product has a specific gravity of 1 or less?
- You can determine specific gravity through testing. Products with a specific gravity of 1 or less qualify for this HS code.
- Are there any additional regulations for importing siliceous earths?
- Yes, ensure compliance with any local regulations regarding the use and handling of siliceous materials.
- Can I use HS-4 2512 for processed diatomaceous earth?
- Yes, both processed and unprocessed diatomaceous earth fall under HS-4 2512 as long as they meet the specific gravity requirement.
- What documentation is needed for customs clearance under HS-4 2512?
- You will need a commercial invoice, packing list, and any relevant certificates confirming the product's specific gravity.
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