Medical-Grade Sulfur Hexafluoride for Ultrasound Contrast from Canada
Pharmaceutical-grade SF6 encapsulated in phospholipid microbubbles (SonoVue equivalent) for echocardiogram contrast enhancement. Chemically defined SF6 core under HTS 2812.90.0010; formulation noted.
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
• FDA drug master file and IND required; chemical classified separately from finished pharmaceutical
• Maintain cold chain documentation for microbubble stability
• Avoid 3004 classification by declaring as bulk chemical, not patient-ready dosage