Calcined

Calcined andalusite, kyanite, or sillimanite

NO PGA · STANDARD CUSTOMS PROCEDURE

HSN 2508 50 23 (calcined andalusite, kyanite, or 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. Other minerals within Chapter 25 — particularly chamotte, mullite, and expanded clays — may be subject to distinct classification rules that affect compliance exposure.

No partner government agency notification covers this tariff line.

A word of counsel

The principal importer risk at this tariff line is misclassification: the uncalcined form of andalusite, kyanite, or sillimanite sits under a sibling tariff line within the same subheading, and customs re-classification to that line — or to a processed refractory product under Chapter 69 — can trigger retrospective duty recovery and detention pending resolution. Verify that the product's calcination status and intended use are precisely documented in the commercial invoice and packing list before filing the bill of entry.

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Frequently asked

Does HSN 2508 50 23 require any pre-import registration?

A valid Importer-Exporter Code is required for any commercial import; no product-specific registration applies to this tariff line.

What changes if the andalusite, kyanite, or sillimanite is not calcined?

The uncalcined form is classified under a separate tariff line within the same subheading and should be verified against that line's compliance status before import.

Last verified against gazette notifications: 2026-05-16. Source: BIS / DGFT / Indian Customs CUSDATA.