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Nepheline Syenite for Fiberglass from Canada

Low-boron nepheline syenite for E-glass fiberglass reinforcement production. Provides stable alumina-silica ratio for fiber durability. HTS 2529.30.0050 'other' nepheline selected for boron <50ppm specification.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

ICP-MS analysis confirming B2O3 <50ppm prevents borosilicate confusion

Fusion temp 1450-1480°C verified by thermal analysis

Silica/alumina ratio 4.5-5.0 maintained within natural nepheline range