Bunker C Heavy Fuel Oil from Japan
Bunker C is a heavy residual fuel oil with high viscosity exceeding 125 Saybolt Universal seconds at 37.8°C, derived from petroleum refining residues. It falls under HTS 2710.20.0520 as a distillate and residual fuel oil testing under 25 degrees A.P.I., containing biodiesel blends where petroleum oils exceed 70% by weight. Primarily used for marine propulsion in large ships.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Verify Saybolt viscosity certification and API gravity via independent lab tests to confirm classification; ensure biodiesel content documentation meets 'basic constituents' threshold
• Common pitfall: misclassifying as lighter distillates if pre-heated samples alter viscosity readings