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HSChapter 25
U.S. imports of natural barium carbonate (witherite) (HS 251120) totaled $3K in April 2026, traded with 1 country.
Last updated: April 2026 dataWitherite, the naturally occurring mineral form of barium carbonate, is a relatively rare industrial mineral classified under a single US tariff line, 2511200000. It serves as a source of barium in specialty glass, ceramic glazes, and certain chemical manufacturing processes, though synthetic barium carbonate produced from barite has largely displaced natural witherite in most commercial applications. Trade professionals importing under this heading should be prepared to document the natural mineral origin to distinguish the product from synthetically produced barium carbonate, which falls under a different chapter.
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Natural barium carbonate (witherite) is classified under HTS 2511200000 as a mineral product of Chapter 25. Synthetically produced barium carbonate — manufactured by chemical reaction rather than mined — falls under Chapter 28 as an inorganic chemical compound. A mineralogical certificate or statement of origin confirming the natural mineral source is advisable to support the Chapter 25 classification.
Witherite is used in specialty glass manufacturing (including CRT and optical glass), ceramic glazes, and as a flux in certain metallurgical processes. Its use has declined as synthetic barium carbonate offers more consistent purity, so imports tend to be small-volume and application-specific.
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Monthly import values over time