Acid Grade Fluorspar Lump
Lump fluorspar containing approximately 97% calcium fluoride (CaF2), primarily used in the production of hydrofluoric acid for industrial chemical processes. This natural mineral extract falls under HTS 2529.21.00.00 due to its CaF2 content not exceeding 97% by weight and its raw, unprocessed form as fluorspar.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If assayed at over 97% CaF2
Higher purity fluorspar is classified separately in the same fluorspar subheading for metallurgical grades.
If chemically processed into synthetic calcium fluoride
Processed or precipitated CaF2 moves to Chapter 28 as inorganic chemical compounds, not natural mineral.
If mixed with other mineral earth colors or fillers
Blended mineral products fall under the catch-all for other mineral substances in heading 2530.
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Import Tips & Compliance
• Verify CaF2 content via independent lab assay certificate to confirm <97% threshold and avoid reclassification to 2529.22
• Ensure proper MSDS documentation for hazardous mineral dust during shipping and customs clearance
Related Products under HTS 2529.21.00.00
Metallurgical Grade Fluorspar Fines
Crushed fluorspar fines with 95-97% CaF2 content, used as a fluxing agent in steelmaking to lower melting points. Classified under HTS 2529.21.00.00 as low-grade fluorspar chunks or powder not exceeding 97% calcium fluoride purity.
Ceramic Fluorspar Powder
Ground fluorspar powder at 96% CaF2 for use in ceramic glazes and enamels to improve fluidity. This product is specifically under HTS 2529.21.00.00 because it is natural fluorspar with CaF2 content at or below 97% weight, in crude or powdered form.
Fluorspar Briquettes Low Grade
Compressed low-grade fluorspar (94% CaF2) into briquettes for easier handling in aluminum smelting. Falls under HTS 2529.21.00.00 as agglomerated fluorspar not further worked, maintaining ≤97% CaF2 content.
Raw Fluorspar Chips for HF Production
Chipped fluorspar at 92-96% CaF2 uniformity, sized 10-50mm for feeding into hydrofluoric acid reactors. This raw material is classified in HTS 2529.21.00.00 for its sub-97% calcium fluoride concentration as natural fluorspar.
Fluorspar Gravel 95% CaF2
Natural fluorspar gravel screened to 3-10mm with 95% CaF2 for flux in phosphate fertilizer production. HTS 2529.21.00.00 applies to this ≤97% purity fluorspar in granular crude form.