Fluoromethane (HFC-41) Calibration Gas
Trace amounts of HFC-41 in nitrogen mixtures serve as calibration standards for environmental gas analyzers monitoring fluorocarbon emissions. The pure HFC-41 component drives classification under HTS 2903.43.10.00. Used in labs for regulatory compliance testing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If as pre-mixed laboratory diagnostic reagent
Diagnostic or lab reagents containing organic compounds classify in Chapter 38.
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Import Tips & Compliance
• NIST-traceable certificates; dilute gas transport regs (UN1956)
• Issue: Over-dilution may classify as prepared lab reagent
Related Products under HTS 2903.43.10.00
1,1-Difluoroethane (HFC-152a) Refrigerant Gas
1,1-Difluoroethane, commonly known as HFC-152a, is a hydrofluorocarbon used as a refrigerant in commercial refrigeration systems and air conditioning units. It falls under HTS 2903.43.10.00 as a saturated fluorinated derivative of acyclic hydrocarbons, specifically listed as one of the designated compounds in this subheading. This chemical is valued for its low global warming potential compared to older refrigerants.
HFC-152a Aerosol Propellant
HFC-152a serves as an environmentally friendly aerosol propellant in personal care products like hairsprays and air fresheners, replacing more harmful CFCs. Classified under HTS 2903.43.10.00 due to its chemical structure as 1,1-difluoroethane, a saturated fluorinated acyclic hydrocarbon explicitly named in the tariff. It provides efficient dispersion without depleting the ozone layer.
Fluoromethane (HFC-41) Industrial Gas
Fluoromethane, or HFC-41, is a specialty gas used in plasma etching processes for semiconductor manufacturing and as a component in some foam blowing agents. It is precisely listed under HTS 2903.43.10.00 as a fluorinated derivative of acyclic hydrocarbons. This compound's high purity is essential for high-tech applications.
1,2-Difluoroethane (HFC-152) Blowing Agent
1,2-Difluoroethane (HFC-152) functions as a blowing agent in the production of polyurethane foams for insulation and packaging. It qualifies for HTS 2903.43.10.00 as one of the specifically enumerated saturated fluorinated acyclic hydrocarbons. Its use supports low-ODP alternatives in rigid foam manufacturing.
HFC-152a Medical Aerosol Propellant
Pharmaceutical-grade HFC-152a is employed as a propellant in metered-dose inhalers for asthma medications. Under HTS 2903.43.10.00, it is classified as the pure 1,1-difluoroethane compound, meeting chapter requirements for chemically defined organic substances. Its GMP production ensures safety for respiratory delivery.
HFC-41 Semiconductor Etchant Gas
High-purity Fluoromethane (HFC-41) is critical for plasma etching in microchip fabrication, selectively removing silicon layers. It is directly named in HTS 2903.43.10.00 as a halogenated acyclic hydrocarbon derivative. This gas enables precision in nanoscale semiconductor production.