Crude, other than calcined
Andalusite, kyanite and sillimanite, crude and uncalcined
HSN 2508 50 21 (crude, uncalcined andalusite, kyanite and sillimanite) 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. Calcined grades of these aluminosilicate minerals, classified separately within Chapter 25, and refractory products derived from them under Chapter 69, may attract distinct compliance obligations.
The principal importer risk at this tariff line is misclassification: calcined andalusite, kyanite, or sillimanite is classified under a sibling line within Chapter 25, and finished refractory shapes incorporating these minerals fall under Chapter 69, where compliance regimes may apply. Customs re-classification on examination — whether from crude to calcined, or from mineral to refractory product — triggers retrospective compliance and potential detention. Verify the processing state and intended use of the material against the customs tariff before relying on the absence of compliance at this line.