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%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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