Medical-Grade HFC-23 Calibration Gas
High-purity trifluoromethane (HFC-23) diluted in balance gas for calibrating medical gas analyzers and environmental monitoring equipment. Falls under HTS 2903.41.10.00 as a chemically defined organic compound per Chapter 29 note 1(a), with dilution allowed under note 1(d) if for safety/transport.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for laboratory analytical use with non-standard dilutions
Diagnostic reagents containing organic compounds may classify under Chapter 38 if prepared for lab analysis.
If prepared mixtures with multiple fluorocarbons for calibration
Multi-component gas mixtures for calibration fall under prepared chemical mixtures of 3824, not pure compounds.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide NIST-traceable certificates of analysis showing HFC-23 concentration (typically 10-50 ppm) and balance gas composition
• Comply with FDA 21 CFR 201.161 for medical device calibration gases if end-use requires it
Related Products under HTS 2903.41.10.00
Trifluoromethane (HFC-23) Refrigerant Gas
Pure trifluoromethane, also known as HFC-23, is a saturated fluorinated derivative of acyclic hydrocarbons used primarily as a high-temperature refrigerant in industrial cooling systems. It falls under HTS 2903.41.10.00 due to its chemical structure as CHF3, matching the specific subheading for trifluoromethane. This colorless, non-flammable gas is supplied in high-pressure steel cylinders for specialized refrigeration applications.
HFC-23 Semiconductor Etch Gas
Ultra-high purity trifluoromethane (HFC-23) used in plasma etching processes for semiconductor manufacturing, particularly for tungsten and oxide etch applications. Classified in HTS 2903.41.10.00 as a separate chemically defined fluorinated hydrocarbon meeting Chapter 29 heading requirements.
HFC-23 Fire Suppressant Agent
Trifluoromethane (HFC-23) formulated as a clean fire extinguishing agent for total flooding systems in data centers and electronics manufacturing. Classified under HTS 2903.41.10.00 as it is a pure saturated fluorinated acyclic hydrocarbon (CHF3) per Chapter 29 definitions. This high-GWP gas leaves no residue and is effective against Class B fires.
HFC-23 Process Byproduct Recovery Gas
Recovered and purified trifluoromethane (HFC-23) from HCFC-22 manufacturing processes, meeting commercial purity standards for refrigerant or feedstock reuse. HTS 2903.41.10.00 applies as it remains a chemically defined organic compound regardless of recovery source.