Zinc Borate Powder (2ZnO·3B2O3·3.5H2O) from Canada
Zinc borate (2ZnO·3B2O3·3.5H2O) is a flame retardant and smoke suppressant used in plastics and textiles. Classified as other borates under HTS 2840.20.00.00 as a metal borate salt per heading applicability. Fine white powder with specific hydrate formula.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Confirm molar ratio via FTIR analysis to validate exact compound
• RoHS compliance docs needed if for electronics import
• Particle size specs affect dust hazard classification