Nepheline Syenite Plaster Filler
Coarse nepheline syenite (D50=25µm) for gypsum plasters and joint compounds improving sandability. Replaces diatomaceous earth for better finish. HTS 2529.30.0050 'other' nepheline processed to plaster grade.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If gypsum impurities >30%
Gypsum dominant mixtures classify as natural gypsum.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Hegman gauge 4-5 verifies plaster grade vs. paint extender
• Calcium sulfate reactivity tests prevent gypsum confusion
• Dust suppression agents prohibited; dry powder only
Related Products under HTS 2529.30.00.50
Nepheline Syenite Powder
Finely ground nepheline syenite used as a functional filler in ceramic tile production and glass manufacturing. Classified under HTS 2529.30.0050 as 'other' leucite, nepheline and nepheline syenite that is processed into powder form but remains a natural mineral product. It provides fluxing properties and improves whiteness in end products.
Leucite Ore Concentrate
Concentrated leucite mineral extracted from volcanic rock deposits, used primarily in potassium fertilizer production and ceramics. Falls under HTS 2529.30.0050 as 'other' leucite not in crude form. The concentrate maintains natural mineral composition without synthetic additives.
Ground Nepheline Syenite Filler
Micronized nepheline syenite specifically graded for paint and coating applications as an extender pigment. HTS 2529.30.0050 covers this 'other' form of nepheline syenite processed by grinding but not chemically altered. Provides matting effect and abrasion resistance.
Nepheline Syenite Ceramic Flux
Calcined nepheline syenite flux for porcelain and sanitary ware production, providing alkali metal oxides for vitrification. Classified HTS 2529.30.0050 as 'other' nepheline syenite despite heat treatment, remaining a natural mineral product. Typical Na2O 9-11%, Al2O3 22-24%.
Leucite Ceramic Raw Material
Natural leucite crystals separated for specialty glass-ceramics like cooktop panels and dental porcelains. HTS 2529.30.0050 'other' covers beneficiated leucite maintaining crystalline structure. Provides nucleation sites for controlled crystallization.
Nepheline Syenite Glass Batch Additive
Granulated nepheline syenite for container glass and flat glass production, replacing soda ash and feldspar. HTS 2529.30.0050 classification as 'other' nepheline syenite in prepared batch form. Standardized 0.5-3mm granules optimize melting efficiency.