Crude
Bentonite, crude (unprocessed natural clay)
HSN 2508 10 10 (crude bentonite) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code (IEC), bill of entry, commercial invoice, packing list. Processed or activated bentonite, andalusite, kyanite, sillimanite, mullite, and chamotte or dinas earths — all classified within Chapter 25 heading 2508 — may fall under distinct tariff lines that carry their own compliance requirements.
The absence of compliance at this tariff line is specific to crude bentonite; activated or acid-treated bentonite is separately classifiable within the same heading and may attract different duty treatment or compliance. Bentonite imported for use as a drilling fluid additive, a foundry binder, or a food-grade additive may face re-classification by customs based on declared end-use, triggering retrospective compliance and detention pending resolution. Verify the product's processing state and intended use against the customs tariff before relying on the absence of compliance.