Tripolite Diatomite from Canada
Tripolite, a lightweight siliceous fossil meal similar to diatomite, used in absorbents and fillers, with apparent specific gravity ≤1. It qualifies under HTS 2512.00.00.00 as an uncalcined siliceous earth.
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
• Obtain supplier specs confirming fossil origin and density; label as non-hazardous for transport; prevent confusion with synthetic silicas