Natural barium carbonate (witherite)

Natural barium carbonate (witherite), whether or not calcined

NO PGA · STANDARD CUSTOMS PROCEDURE

HSN 2511 20 00 (Natural barium carbonate — witherite, whether or not calcined) 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. Barium compounds processed beyond the natural mineral state — such as barium oxide or chemically derived barium carbonate — may fall under different chapters that carry distinct compliance obligations.

No partner government agency notification covers this tariff line.

A word of counsel

The principal importer risk at this tariff line is misclassification: barium oxide is expressly excluded from heading 2511 and falls under heading 2816, which sits in Chapter 28 (chemicals) and may attract different compliance. Calcined witherite that has been chemically purified beyond the natural mineral may similarly migrate to Chapter 28. Re-classification on customs examination triggers detention pending retrospective compliance and potential duty recovery at the higher applicable rate.

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Frequently asked

Does HSN 2511 20 00 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 barium carbonate is chemically derived rather than a natural mineral?

Chemically produced barium carbonate is classified under Chapter 28 rather than Chapter 25 and may attract compliance obligations that do not apply to natural witherite.

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