C4+ Refinery Fuel Gas
C4+ refinery fuel gas is a tail gas from petroleum refining processes, consisting of hydrocarbons with four or more carbon atoms, and is burned as fuel in its gaseous state. It falls under tariff item 2711.29.00 as 'other' petroleum gases and gaseous hydrocarbons not elsewhere specified, since it does not qualify as natural gas or liquefied petroleum gas. The chapter notes exclude separate chemically defined organic compounds, but this mixed gas is not such a compound.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the gas is liquefied
Liquefied butanes and other liquefied petroleum gases fall under heading 2711.14, not the gaseous state item.
If the gas is mixed with oil or water
If the product contains mainly petroleum oils and is no longer fit for use, it may be classified as waste oil under heading 27.10.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the gas is in gaseous state at import and not liquefied, as that would fall under a different heading
• Provide a certificate of analysis to confirm the hydrocarbon composition and that it is not a separate chemically defined compound
• Verify with CBSA that the product is not classified as a waste oil under heading 27.10
Related Products under Tariff item 2711.29.00
90.5% Butane Mixture for Laboratory Burners
Gaseous butane at 90.5% purity supplied for Bunsen burners and lab flame tests in educational and research facilities. This product is classified under tariff item 2711.29.00 as 'other' gaseous butane, matching the exact purity criteria for butanes in gaseous state.
90-94% Pure Butane Gas Cylinder for Lighters
A pressurized cylinder containing butane gas with 90-94% purity by liquid volume, used primarily as a fuel for refillable cigarette lighters and torch lighters. This product falls under tariff item 2711.29.00 as 'other' gaseous butane within the specified purity range.
91.8% Butane Fuel for Butane Stoves
Consumer-grade butane fuel canisters at 91.8% purity for tabletop butane stoves used in catering. This product is classified under tariff item 2711.29.00 as 'other' gaseous butane within the specified purity range.
93% Butane Gas for Torch Lighter Refills
Refill canisters of butane gas at 93% purity specifically for butane torch lighters used in culinary and soldering applications. This product falls under tariff item 2711.29.00 as 'other' gaseous butane with purity level between 90-95% liquid volume.
94% Purity Butane for Soldering Torches
High-pressure butane cartridges at 94% purity for portable soldering torches in electronics repair. This product is classified under tariff item 2711.29.00 as 'other' gaseous butane, just below the 95% purity threshold.
BBQ Grill Propane Cylinder Gas
BBQ grill propane cylinder gas is gaseous propane at 90% minimum purity for standard 20-lb BBQ grill cylinders in vapor withdrawal service. However, pure propane is excluded from this heading by chapter note 1(a), which excludes separate chemically defined organic compounds other than pure methane and propane. Since propane is specifically excluded, this product does not belong under tariff item 2711.29.00.