Medical-Grade Sulfur Hexafluoride for Ultrasound Contrast from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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