Mullite
Mullite, a refractory mineral of aluminium silicate
HSN 2508 60 00 (Mullite) 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 mineral products within Chapter 25 — particularly calcined clays, chamotte, and refractory earths classified under sibling tariff lines — may attract distinct compliance depending on processing state and intended industrial use.
Mullite is typically imported as a raw or calcined refractory mineral, but the compliance exposure shifts materially if the product is further processed into shaped refractory articles, which are classified under Chapter 69 and may carry Quality Control Order obligations. Customs re-classification from Chapter 25 to Chapter 69 on examination triggers retrospective compliance, including detention pending the relevant certification. Confirm that the product meets the Chapter 25 description — unshaped, not further worked — before relying on the absence of compliance at this tariff line.