HFC-227ea Calibration Gas Standard
A certified reference gas standard containing HFC-227ea at trace concentrations in nitrogen, used for calibrating gas chromatography equipment and atmospheric monitoring instruments. The HFC-227ea component is a saturated fluorinated derivative of an acyclic hydrocarbon, falling squarely under tariff item 2903.46.00.
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:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the mixture is presented as a certified reference material for laboratory use
Chapter 29 covers pure compounds; mixtures for analytical calibration may fall under diagnostic or laboratory reagents.
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 mixture certificate of analysis accompanies the shipment to verify the HFC-227ea concentration
• Declare the product under 2903.46.00, noting the pure HFC-227ea component
• Check if the nitrogen balance gas affects classification under Chapter 29 notes
Related Products under Tariff item 2903.46.00
HFC-227ea Dielectric Test Gas
Pure HFC-227ea gas used for dielectric strength testing of high-voltage electrical equipment. As a saturated fluorinated acyclic hydrocarbon, it is explicitly named in tariff item 2903.46.00, which covers HFC-227ea regardless of its end-use application.
HFC-227ea Fire Extinguishing Agent
Pure HFC-227ea fire extinguishing agent used in total flooding fire suppression systems. This saturated fluorinated acyclic hydrocarbon is explicitly listed in tariff item 2903.46.00, which covers HFC-227ea whether used as a fire suppressant or for other purposes.
HFC-227ea Medical Propellant
Pharmaceutical grade HFC-227ea used as a propellant in metered dose inhalers. The pure compound is a saturated fluorinated acyclic hydrocarbon named in tariff item 2903.46.00, and its use as a medical propellant does not affect its classification under Chapter 29.
HFC-236cb Foam Blowing Agent
HFC-236cb used as a foam blowing agent for polyurethane spray foam insulation. This saturated fluorinated acyclic hydrocarbon is specifically named in tariff item 2903.46.00, which covers HFC-236cb regardless of its industrial application.
HFC-236ea Electronic Cleaning Solvent
HFC-236ea used as a precision cleaning solvent for electronic circuit boards. As a saturated fluorinated acyclic hydrocarbon explicitly named in tariff item 2903.46.00, the pure compound is classified here even when used for solvent applications.
HFC-236ea Precision Vapor Degreaser
HFC-236ea for vapor degreasing of aerospace components and optical lenses. The pure compound is a saturated fluorinated acyclic hydrocarbon named in tariff item 2903.46.00, and its use in degreasing does not remove it from Chapter 29.