Other
Calcareous stones for lime or cement manufacture, other
HSN 2521 00 90 (limestone flux and other calcareous stones used in lime or cement manufacture, other than those separately classified) 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 derivatives of limestone — such as quicklime, slaked lime, and hydraulic lime — fall under Chapter 25 tariff lines that may carry separate compliance considerations.
The absence of compliance at this tariff line does not extend to downstream processed forms: lime and cement products classified elsewhere in Chapter 25, and certain limestone-derived mineral inputs used in construction or industrial applications, each sit under distinct tariff lines that may attract Quality Control Order coverage. Customs re-classification of a consignment — for example, from raw calcareous stone to a processed grade — triggers retrospective compliance, including potential detention pending the applicable standard. Verify the product's physical state, processing level, and intended end-use against the tariff schedule before relying on the absence of compliance here.