Lead-Free Glass Frit for Ceramic Glazes
Finely powdered glass material used as a base for creating durable glazes on ceramic tiles and pottery. It melts during firing to form a smooth, glassy surface, classified under HTS 3207.40.5000 as glass in powdered form specifically for the ceramic industry.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing >=25% lead oxide
High-lead glass frit shifts to specific subheading for leaded preparations in ceramic/glass applications.
If sold as vitrifiable enamel or glaze
Ready-to-apply enamel forms are distinguished from raw powdered frit under separate provisions.
If natural mineral earth pigment without fusing properties
Non-fusible mineral powders for coloring fall under earth colors, not processed glass frit.
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Import Tips & Compliance
• Verify composition meets lead-free standards with lab certificates to comply with FDA and EPA regulations for food-contact ceramics
• Include firing temperature specs in documentation to prove ceramic industry use and avoid reclassification as general pigments
• Check for heavy metal content declarations to prevent customs holds on environmental grounds
Related Products under HTS 3207.40.50.00
Quartz Glass Powder for Glass Frit Production
High-purity quartz glass ground into fine flakes or granules, used in manufacturing specialty glass frit for enameling on glass substrates. Falls under HTS 3207.40.5000 as 'other glass' in granular form for the glass industry.
Borosilicate Glass Flakes for Engobe Slips
Thin borosilicate glass flakes used in preparing engobes (slips) for coating ceramic bodies before glazing. Provides opacity and adhesion, classified as glass flakes under HTS 3207.40.5000 for ceramic industry use.
Ceramic Tile Glass Granules
Granulated glass powder optimized for inclusion in ceramic tile bodies to enhance vitrification and surface quality. Processed into uniform granules for even mixing, under HTS 3207.40.5000 as glass for ceramic industry.
Opacifying Glass Powder for Porcelain Enamels
Specialized glass powder that creates opacity in porcelain enamel coatings for appliances and sanitary ware. Disperses evenly during high-temperature firing, classified under HTS 3207.40.5000 for enamelling industry.
Fused Silica Flakes for Glass Decoration
Ultra-pure fused silica in flake form used in decorative glass frit for architectural panels and tableware. Provides crystal clarity post-firing, under HTS 3207.40.5000 but noted as specific glass form.
Zirconium-Enhanced Glass Granules for Tableware
Glass granules doped with zirconium oxide for brilliant white glazes on ceramic tableware. Enhances opacity and durability in dinnerware production, HTS 3207.40.5000 as prepared glass for ceramics.