Blended Residual No. 4 Fuel Oil Low S
A blend of distillate and residual oils forming No. 4 fuel with sulfur ≤500 ppm, <25° API, and viscosity 45-125 SUS, imported under HTS 2710.19.06.05. Suitable for older burners in commercial heating systems requiring ultra-low sulfur heavy fuel.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If motor fuel blending stocks
If intended for gasoline/diesel blending rather than direct combustion as No. 4 fuel.
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Import Tips & Compliance
• Document blend ratios and origin of components for traceability
• Ensure S content tested by ASTM D5453 method
• Common issue: Pre-shipment contamination raising sulfur above limit
Related Products under HTS 2710.19.06.05
No. 4 Fuel Oil Ultra-Low Sulfur
A heavy distillate fuel oil classified under HTS 2710.19.06.05 due to its API gravity under 25 degrees, Saybolt Universal viscosity between 45 and 125 seconds at 37.8°C, and sulfur content not exceeding 500 ppm. It is primarily used for industrial boilers and marine applications where low-emission fuels are required. This specification meets stringent environmental regulations for reduced sulfur emissions.
Marine No. 4-Type Fuel Oil Low Sulfur
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Industrial Boiler No. 4 Fuel Oil 500 ppm S
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Power Plant No. 4 Type Fuel Oil ULS
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Commercial Heating No. 4 Fuel 0.05% S
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