Methylacetylene Gas
Methylacetylene gas (propyne) is used in welding torches and chemical synthesis. It is petroleum-derived and in gaseous state. As a mixed unsaturated hydrocarbon that is not a separate chemically defined compound excluded by Chapter Note 1, it falls under this tariff item as other petroleum gases.
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 methylacetylene is liquefied
Liquefied olefins are classified under a specific subheading.
If the methylacetylene is a separate chemically defined compound
Separate chemically defined organic compounds are classified in Chapter 29.
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 proper dangerous goods documentation is provided for this flammable gas
• Confirm the gas is in gaseous state and not liquefied for correct classification
• Provide a certificate of analysis showing the hydrocarbon composition and purity
Related Products under Tariff item 2711.29.00
BBQ Grill Propane Cylinder Gas
BBQ grill propane cylinder gas is gaseous propane at 90% minimum purity for standard 20-lb grill cylinders in vapor withdrawal service. Since it is in gaseous state and not liquefied, it falls under this tariff item as other petroleum gases, with pure propane specifically included in heading 27.11.
C4+ Refinery Fuel Gas
C4+ refinery fuel gas is a gaseous mixture of hydrocarbons with four or more carbon atoms, produced as a by-product of petroleum refining. It is burned as a fuel in gaseous form and is not a separate chemically defined organic compound, making it classifiable under this tariff item as other petroleum gases.
Ethane/Propane Blend Gas
Ethane/propane blend gas is a gaseous mixture of ethane and propane used as petrochemical feedstock. It is not classified as natural gas or as a specific liquefied petroleum gas product, and since it is a mixture rather than a separate chemically defined compound, it falls under this tariff item for other petroleum gases.
Fuel Gas Mixtures (C3+ Hydrocarbons)
Fuel gas mixtures containing C3 and higher hydrocarbons are used as industrial fuel gas. These mixed gaseous hydrocarbons do not fit into specific categories for LPG or olefins and are derived from refining processes, making them classifiable under this tariff item as other petroleum gases in gaseous state.
High-Purity Propane Fuel Gas
High-purity propane fuel gas has at least 90% liquid volume purity and is supplied in gaseous state for residential and commercial heating. Pure propane is specifically included in heading 27.11 by Chapter Note 1, and since it is in gaseous state, it falls under this tariff item as other petroleum gases.
Hydrogen-Rich Refinery Off-Gas
Hydrogen-rich refinery off-gas contains hydrogen and light hydrocarbons (C2+) produced during petroleum refining. It is used in hydrocracking processes and is imported in gaseous state. This product is not a separate chemically defined compound and falls under this tariff item as other petroleum gases.