Other
Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: > Natural barium sulfate (barytes): > Other
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2511.10.50.00
Ground Barytes Powder
Finely ground natural barium sulfate (barytes) ore processed into powder form for industrial applications such as drilling mud additives in oil and gas exploration. Classified under HTS 2511.10.50.00 as 'other' natural barium sulfate that is not crude or insufficiently ground. It meets the definition of natural barytes, distinguished from precipitated barium sulfate in heading 2833.
Washed Barytes Ore
Natural barium sulfate ore that has been washed to remove impurities but not finely ground, used primarily as a filler in paints and plastics. Falls under HTS 2511.10.50.00 as 'other' processed natural barytes, excluding crude forms. This distinguishes it from witherite or barium oxide.
Micronized Barytes Filler
Ultra-fine micronized natural barium sulfate used as a functional filler in high-performance coatings and rubber compounds. HTS 2511.10.50.00 covers this 'other' form of processed natural barytes, separate from synthetic versions. Its natural origin and minimal chemical alteration keep it in Chapter 25.
Natural Barytes for Drilling Grade
High-specific gravity natural barium sulfate selected and sized for weighting agents in oil well drilling fluids. Classified in HTS 2511.10.50.00 as 'other' natural barytes, not crude, due to specific sizing for industrial use. Excludes any chemically modified forms.
Barytes Lump for Grinding
Lump form natural barium sulfate ore suitable for further grinding into powder, sourced from barytes deposits. Under HTS 2511.10.50.00 as 'other' since it exceeds crude size limits but remains unground. Used in manufacturing fillers and extenders.
High-Purity Barytes Powder
Premium ground natural barium sulfate with over 95% purity, used in pharmaceutical and specialty filler applications. HTS 2511.10.50.00 applies to this 'other' processed natural form, excluding synthetic high-purity grades. Its natural extraction origin is key.
Barytes for Paint Extender
Ground natural barium sulfate specifically graded as an extender pigment in architectural paints to improve opacity and durability. Classified under HTS 2511.10.50.00 as 'other' natural barytes before pigment formulation. Remains a raw mineral input.
Calcined Witherite Powder
Natural barium carbonate (witherite) ore calcined to remove impurities, ground into powder for glass manufacturing and chemical feedstock. HTS 2511.10.50.00 includes calcined witherite explicitly, as 'other' barium compounds excluding barium oxide. Differs from synthetic carbonates.
Natural Barytes for Rubber Filler
Coarse ground natural barium sulfate used as a reinforcing filler in tire and rubber compounds to enhance mechanical properties. Under HTS 2511.10.50.00 as 'other' processed barytes for industrial use. Natural source prevents classification as synthetic filler.
Witherite Ore Concentrate
Concentrated natural barium carbonate (witherite) ore from flotation processing, used in pyrotechnics and specialty chemicals. HTS 2511.10.50.00 covers this 'other' form of natural witherite, calcined or not. Excludes barium oxide per heading exclusion.
API Grade Barytes
Natural barium sulfate meeting American Petroleum Institute standards for oilfield drilling mud weighting, ground to specific density. Classified HTS 2511.10.50.00 as 'other' due to API processing beyond crude. Essential for density control in wells.
Blended Barytes-Witherite Mix
Natural mixture of barium sulfate and barium carbonate from same deposit, ground for metallurgical flux applications. HTS 2511.10.50.00 as 'other' natural barium compounds. Chapter notes confirm inclusion if naturally occurring.
Fine Barytes for Plastics
Ultra-fine natural ground barium sulfate filler for PVC and polymer plastics to improve rigidity and weather resistance. Under HTS 2511.10.50.00 as 'other' processed barytes. Natural processing keeps it distinct from precipitated grades.
Natural Barytes for Ceramics
Ground natural barium sulfate used as an opacifier and flux in ceramic glazes and bodies. HTS 2511.10.50.00 for this 'other' form suitable for ceramics industry. Excludes fully fused products.
Witherite for Strontium Production
Natural barium carbonate (witherite) selected for reduction to barium metal or strontium compounds in chemical synthesis. Classified HTS 2511.10.50.00 as 'other' calcinable witherite. Raw mineral status confirmed by processing state.