HFC-143a Electronic Grade Gas
Ultra-high purity 1,1,1-trifluoroethane (HFC-143a) for semiconductor cleaning is a separate chemically defined compound under Chapter 29 Note 1(a). It is specifically named in tariff item 2903.44.00, and its high purity does not affect classification.
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 |
More Specific Codes
This product may fall under a more specific subheading:
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
• Provide a certificate of analysis showing purity (e.g
• 99.999%) to support classification
• Ensure the product is not put up for retail sale, which could trigger other headings
• Check if the product is subject to export controls or permits
Related Products under Tariff item 2903.44.00
1,1,1,2,2-Pentafluoroethane (HFC-125) Pure Gas
Pure 1,1,1,2,2-pentafluoroethane (HFC-125) is a saturated fluorinated derivative of acyclic hydrocarbons, supplied as a high-purity gas. It is a separate chemically defined compound under Chapter 29 Note 1(a) and is specifically named in tariff item 2903.44.00.
1,1,1-Trifluoroethane (HFC-143a) Pure Gas Cylinder
1,1,1-Trifluoroethane (HFC-143a) is a saturated fluorinated derivative of acyclic hydrocarbons, supplied as a pure gas in high-pressure cylinders. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a), and is specifically named under tariff item 2903.44.00.
1,1,2-Trifluoroethane (HFC-143) Propellant Grade
1,1,2-Trifluoroethane (HFC-143) is a saturated fluorinated acyclic hydrocarbon, supplied in propellant grade for aerosol pharmaceutical delivery systems. It is a separate chemically defined compound, meeting Chapter 29 Note 1(a), and is explicitly listed under tariff item 2903.44.00.
1,1,2-Trifluoroethane (HFC-143) Research Chemical
1,1,2-Trifluoroethane (HFC-143) is a specific isomer listed under tariff item 2903.44.00, supplied in lecture bottles for laboratory synthesis. As a separate chemically defined organic compound, it qualifies under Chapter 29 Note 1(a) and is not excluded by any chapter note.
HFC-125 Fire Extinguishing Gas
1,1,1,2,2-Pentafluoroethane (HFC-125) for fire suppression systems is a pure fluorinated hydrocarbon, specifically named under tariff item 2903.44.00. It is a separate chemically defined compound under Chapter 29 Note 1(a), and its use in fire suppression does not affect classification.
HFC-125 Medical Propellant Grade
Pharmaceutical-grade 1,1,1,2,2-pentafluoroethane (HFC-125) for metered dose inhalers is a pure compound, specifically named under tariff item 2903.44.00. It meets Chapter 29 Note 1(a) as a separate chemically defined organic compound.