Containing trifluoromethane (HFC-23)
Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included: > Containing trifluoromethane (HFC-23) or perfluorocarbons (PFCs) but not containing chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs): > Containing trifluoromethane (HFC-23)
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 3827.51.00.00
HFC-23 Refrigerant Blend for Industrial Chillers
A specialized refrigerant mixture containing trifluoromethane (HFC-23) designed for low-temperature industrial chillers and cryogenic applications. This blend falls under HTS 3827.51.00.00 because it contains HFC-23 without CFCs or HCFCs, used in refrigeration systems requiring ultra-low temperatures.
HFC-23 Fire Suppression Gas Mixture
A clean agent fire extinguishing blend incorporating HFC-23 for total flooding systems in data centers and electrical rooms. Classified under HTS 3827.51.00.00 due to its HFC-23 content without prohibited CFCs or HCFCs, serving as an environmentally preferable alternative to halon.
Cryogenic Cooling Fluid with HFC-23
Specialty fluid mixture containing HFC-23 used in semiconductor manufacturing for sub-zero cooling processes. This product is classified in HTS 3827.51.00.00 as it features trifluoromethane in a mixture free of CFCs and HCFCs, essential for precision temperature control.
HFC-23 Semiconductor Etch Gas Blend
Plasma etch gas mixture with HFC-23 for microchip fabrication processes requiring high-purity fluorinated gases. Falls under HTS 3827.51.00.00 because it contains trifluoromethane without CFCs or HCFCs, critical for advanced semiconductor manufacturing.
HFC-23 Medical Cryospray Refrigerant
Cryospray mixture containing HFC-23 for endoscopic medical procedures requiring rapid freezing. Classified under HTS 3827.51.00.00 as an HFC-23 mixture lacking CFCs or HCFCs, used in cryotherapy applications.
HFC-23 Leak Detection Gas Mixture
Trace gas blend with HFC-23 used for detecting leaks in HVAC systems and pipelines. This product is covered by HTS 3827.51.00.00 due to its trifluoromethane content in a CFC/HCFC-free formulation, detectable by sensitive mass spectrometry.
HFC-23 Calibration Standard Gas
Certified reference mixture containing known HFC-23 concentrations for environmental monitoring equipment calibration. Classifies under HTS 3827.51.00.00 as it features trifluoromethane without ozone-depleting substances.
HFC-23 Foam Blowing Agent Blend
Polyurethane foam blowing agent mixture incorporating HFC-23 for insulated panels and appliances. Falls under HTS 3827.51.00.00 because it contains trifluoromethane without CFCs or HCFCs, used in energy-efficient insulation production.
HFC-23 Research Laboratory Gas Mixture
High-purity HFC-23 blend for atmospheric chemistry research and greenhouse gas studies. Classified in HTS 3827.51.00.00 due to trifluoromethane content in a mixture free of regulated ozone-depleting substances.
HFC-23 Medical MRI Cooling Gas
Specialized cooling gas mixture with HFC-23 for superconducting MRI magnet systems. This product falls under HTS 3827.51.00.00 as it contains trifluoromethane without CFCs or HCFCs, essential for maintaining cryogenic temperatures.