Other
Natural barium sulphate (barytes), other grades
HSN 2511 10 90 (natural barium sulphate — barytes, other grades) 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, bill of entry, commercial invoice, packing list. Barium compounds processed beyond the natural mineral state — or barium carbonate (witherite) classified elsewhere in Chapter 25 — may fall under tariff lines that carry distinct compliance obligations.
The absence of compliance at this tariff line reflects the natural, unprocessed mineral classification; processed barium compounds or preparations used as inputs to paint, rubber, or chemical manufacture may attract compliance under later chapters. Re-classification on customs examination — for instance, to a chemically defined barium compound under Chapter 28 — triggers retrospective compliance, including detention pending resolution. Confirm the product's mineralogical state, purity specification, and intended downstream use against the tariff schedule before filing the bill of entry.