HFC-23 fire suppressant agent is pure trifluoromethane (HFC-23), a saturated fluorinated derivative of acyclic hydrocarbons. It is a separate chemically defined organic compound, classified under tariff item 2903.41.00. The product is formulated for use in total flooding fire suppression systems, but remains chemically identical to the base compound.

2903.41.00

HFC-23 Process Byproduct Recovery Gas

Recovered and purified HFC-23 from HCFC-22 manufacturing is trifluoromethane that meets commercial purity standards. It is a separate chemically defined organic compound, even if derived from an industrial byproduct stream. The product is classifiable under tariff item 2903.41.00 as a saturated fluorinated derivative of acyclic hydrocarbons.

2903.41.00

HFC-23 Semiconductor Etch Gas

Ultra-high purity trifluoromethane (HFC-23) for semiconductor plasma etching is a separate chemically defined organic compound. It is a saturated fluorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.41.00. The high purity grade does not change the chemical classification.

2903.41.00

Medical-Grade HFC-23 Calibration Gas

Medical-grade HFC-23 calibration gas is high-purity trifluoromethane diluted in a balance gas for analytical calibration. While the diluted form is not a pure compound, the HFC-23 component itself is a saturated fluorinated derivative of acyclic hydrocarbons. The product is classifiable under tariff item 2903.41.00 if the dilution is for safety or transport and does not render it suitable for a specific use.

2903.41.00

Trifluoromethane (HFC-23) Refrigerant Gas

Pure trifluoromethane (HFC-23) refrigerant gas is a saturated fluorinated derivative of acyclic hydrocarbons. It is a separate chemically defined organic compound, classified under tariff item 2903.41.00. The product is used as a high-temperature refrigerant in industrial cooling systems.

2903.42.00

Difluoromethane HFC-32 for Air Conditioner Recharging

Difluoromethane (HFC-32) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically methane, with the chemical formula CH2F2. It is a separate chemically defined organic compound, qualifying under Chapter 29 Note 1(a). This product is supplied in DOT-approved cylinders for recharging air conditioning units, and its use does not alter its classification under tariff item 2903.42.00.

2903.42.00

Difluoromethane (HFC-32) Refrigerant Gas

This product is pure difluoromethane (HFC-32), a saturated fluorinated derivative of acyclic hydrocarbons, used as a low-GWP refrigerant. It is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a), and is not put up for retail sale in a manner that would shift classification. It falls squarely under tariff item 2903.42.00.

2903.42.00

HFC-32 Difluoromethane 99.9% Purity Cylinder

High-purity difluoromethane (HFC-32) at 99.9% concentration is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It is supplied in refillable steel cylinders for commercial refrigeration charging, and the packaging does not affect its classification. This product is correctly classified under tariff item 2903.42.00.

2903.42.00

HFC-32 Difluoromethane with Stabilizer Inhibitor

Difluoromethane containing a minimal polymerization inhibitor stabilizer is still classified under tariff item 2903.42.00, as Chapter 29 Note 1(f) permits added stabilizers necessary for preservation or transport. The stabilizer does not render the product particularly suitable for a specific use, so it remains a separate chemically defined organic compound. This product is correctly classified under 2903.42.00.

2903.42.00

Industrial Grade Difluoromethane HFC-32 Bulk Supply

Bulk industrial difluoromethane (HFC-32) is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It is transported in ton-cylinder containers for large-scale refrigerant blending and manufacturing, but the bulk transport method does not affect its classification. This product falls under tariff item 2903.42.00.

2903.43.00

1,1-Difluoroethane (HFC-152a) Fire Suppressant Blend Base

1,1-Difluoroethane (HFC-152a) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically enumerated under tariff item 2903.43.00. It is used as a base component in clean agent fire suppression systems for data centers and electronics, valued for its low toxicity and non-conductive properties. The pure chemical identity of HFC-152a qualifies it for classification under this item.

2903.43.00

1,1-Difluoroethane (HFC-152a) Refrigerant Gas

1,1-Difluoroethane (HFC-152a) is a saturated fluorinated derivative of acyclic hydrocarbons, explicitly listed under tariff item 2903.43.00. It is widely used as a refrigerant in commercial refrigeration systems and air conditioning units due to its favorable thermodynamic properties. The product is a separate chemically defined compound, meeting the chapter's requirements.

2903.43.00

1,2-Difluoroethane (HFC-152) Blowing Agent

1,2-Difluoroethane (HFC-152) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically named in tariff item 2903.43.00. It functions as a blowing agent in the production of polyurethane foams for insulation and packaging, providing thermal efficiency. As a separate chemically defined compound, it qualifies for classification under this item.

2903.43.00

Fluoromethane (HFC-41) Calibration Gas

Fluoromethane (HFC-41) is a saturated fluorinated derivative of acyclic hydrocarbons, explicitly listed under tariff item 2903.43.00. It is used in trace amounts in nitrogen mixtures as calibration gas for environmental gas analyzers monitoring fluorocarbon emissions. The pure HFC-41 component drives classification, and the product meets the chapter's criteria for a separate chemically defined compound.

2903.43.00

Fluoromethane (HFC-41) Industrial Gas

Fluoromethane (HFC-41) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically named in tariff item 2903.43.00. It is a specialty gas used in plasma etching processes for semiconductor manufacturing and as a component in some foam blowing agents. As a separate chemically defined compound, it falls under this item.

2903.43.00

HFC-152a Aerosol Propellant

HFC-152a (1,1-difluoroethane) is a saturated fluorinated derivative of acyclic hydrocarbons, explicitly listed under tariff item 2903.43.00. It serves as an environmentally friendly aerosol propellant in personal care products like hairsprays and air fresheners, replacing more harmful CFCs. The pure compound qualifies for classification under this item.

2903.43.00

HFC-152a Foam Expansion Agent

HFC-152a (1,1-difluoroethane) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically named in tariff item 2903.43.00. It drives the expansion of polystyrene foams used in packaging and construction insulation. The pure compound offers zero ozone depletion potential and meets the chapter's criteria for classification.

2903.43.00

HFC-152a Medical Aerosol Propellant

Pharmaceutical-grade HFC-152a (1,1-difluoroethane) is a saturated fluorinated derivative of acyclic hydrocarbons, explicitly listed under tariff item 2903.43.00. It is employed as a propellant in metered-dose inhalers for asthma medications. The pure compound meets the chapter's requirements for a separate chemically defined compound.

2903.43.00

HFC-152 Refrigerant for Chillers

1,2-Difluoroethane (HFC-152) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically named in tariff item 2903.43.00. It is utilized in large-scale industrial chillers for cooling processes in food processing plants. As a separate chemically defined compound, it qualifies for classification under this item.

2903.43.00

HFC-41 Semiconductor Etchant Gas

High-purity Fluoromethane (HFC-41) is a saturated fluorinated derivative of acyclic hydrocarbons, explicitly listed under tariff item 2903.43.00. It is critical for plasma etching in microchip fabrication, selectively removing silicon layers. As a separate chemically defined compound, it falls under this 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.

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.

2903.44.00

1,1,1-Trifluoroethane (HFC-143a) Refrigerant Gas

Pure 1,1,1-trifluoroethane (HFC-143a) used as a refrigerant gas in commercial refrigeration systems. This saturated fluorinated acyclic hydrocarbon is a separate chemically defined compound, classified under tariff item 2903.44.00.

2903.44.00

1,1,2-Trifluoroethane (HFC-143) Bulk Chemical

Bulk industrial quantities of 1,1,2-trifluoroethane (HFC-143) in tonnage cylinders for chemical manufacturing and refrigerant production. As a chemically defined saturated fluorinated acyclic hydrocarbon, it precisely matches tariff item 2903.44.00.

2903.44.00

1,1,2-Trifluoroethane (HFC-143) Foam Blowing Agent

1,1,2-Trifluoroethane (HFC-143) supplied for rigid polyurethane foam insulation manufacturing as a blowing agent. This pure saturated fluorinated hydrocarbon is specifically identified in tariff item 2903.44.00.

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.

2903.44.00

1,1,2-Trifluoroethane (HFC-143) Refrigerant Gas

Pure 1,1,2-trifluoroethane (HFC-143), a saturated fluorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.44.00. Used primarily as a refrigerant in industrial and commercial applications.

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.

2903.44.00

1,1,2-Trifluoroethane Toner Cartridge Pressurizer

1,1,2-Trifluoroethane (HFC-143) used as a non-flammable pressurizing gas in laser printer toner cartridges and aerosol cleaning products. This saturated fluorinated acyclic hydrocarbon is specifically named in tariff item 2903.44.00, which covers pentafluoroethane and trifluoroethane isomers. It provides consistent pressure without reacting with the toner or cleaning solution.

2903.44.00

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.

2903.44.00

HFC-125/HFC-143a Calibration Gas Mixture

A calibration gas mixture containing HFC-125 and HFC-143a, used for gas chromatography calibration standards. This product is a separate chemically defined compound per Chapter 29 Note 1(a), and is classified under tariff item 2903.44.00 as a saturated fluorinated derivative of acyclic hydrocarbons.

2903.44.00

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.

2903.44.00

HFC-125 Pentafluoroethane Technical Grade

Pentafluoroethane (HFC-125) is a saturated fluorinated derivative of acyclic hydrocarbons, supplied in technical grade with >99% purity and stabilized for transport. It is a separate chemically defined compound under Chapter 29 Note 1(a), and the stabilizer is permitted under Note 1(f) for preservation or transport.

2903.44.00

HFC-125 Refrigerant Cylinder (99.9% Purity)

High-purity HFC-125 in 20 lb cylinders is a pure compound, specifically named under tariff item 2903.44.00. It is a separate chemically defined saturated fluorinated derivative, meeting Chapter 29 Note 1(a).

2903.44.00

HFC-125 Semiconductor Processing Gas

Ultra-high purity 1,1,1,2,2-pentafluoroethane (HFC-125) for semiconductor plasma etching is a pure organic compound, specifically named under tariff item 2903.44.00. It meets Chapter 29 Note 1(a) as a separate chemically defined compound.

2903.44.00

HFC-125 + Stabilizer Blend

HFC-125 with a transport stabilizer (≤0.1%) is still classified as a pure compound under tariff item 2903.44.00. The stabilizer is permitted under Chapter 29 Note 1(f) for preservation or transport, and the product remains chemically defined.

2903.44.00

HFC-143a 1,1,1-Trifluoroethane Bulk Industrial

Bulk industrial 1,1,1-trifluoroethane (HFC-143a) is a pure saturated fluorinated derivative used in refrigerant production and foam blowing. It is a separate chemically defined compound, meeting Chapter 29 Note 1(a), and is specifically named under tariff item 2903.44.00.

2903.44.00

HFC-143a 99.99% Semiconductor Grade

Ultra-high purity 1,1,1-trifluoroethane (HFC-143a) for semiconductor etch processes and plasma cleaning. This pure compound is explicitly named in tariff item 2903.44.00, classified as a saturated fluorinated derivative of acyclic hydrocarbons.

2903.44.00

HFC-143a Aerosol Propellant

1,1,1-Trifluoroethane (HFC-143a) packaged as an aerosol propellant for consumer products like air dusters. This pure compound is classified under tariff item 2903.44.00 as a saturated fluorinated derivative of acyclic hydrocarbons.

2903.44.00

HFC-143a Calibration Standard

NIST-traceable 1,1,1-trifluoroethane (HFC-143a) gas standard at 100 ppm in air for gas chromatography calibration. The principal HFC-143a component determines classification under tariff item 2903.44.00.

2903.44.00

HFC-143a Cylinder Tonner Refill

Bulk 1,1,1-trifluoroethane (HFC-143a) in 1-ton capacity cylinders for industrial gas distributors. This separate chemically defined compound is classified under tariff item 2903.44.00 as specifically provided for 1,1,1-trifluoroethane.

2903.44.00

HFC-143a Electronic Cleaner Gas

High-purity 1,1,1-trifluoroethane (HFC-143a) in 10 oz cans for cleaning electronics and contacts. This pure halogenated hydrocarbon is classified under tariff item 2903.44.00 as it matches the exact chemical description.

2903.44.00

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.

2903.44.00

HFC-143a Industrial Fire Suppressant

1,1,1-Trifluoroethane (HFC-143a) for total flooding fire suppression systems in data centers. Classified under tariff item 2903.44.00 per Chapter 29 as a named saturated fluorinated derivative of acyclic hydrocarbons.

2903.44.00

HFC-143a + Pentafluoroethane Blend Base

1,1,1-Trifluoroethane (HFC-143a) component (90%) for blending with HFC-125. Still classified under tariff item 2903.44.00 when imported pure for subsequent mixing, as the specific compound naming prevails.

2903.44.00

HFC-143a Precision Cleaning Solvent

Stabilized 1,1,1-trifluoroethane (HFC-143a) with transport stabilizer for vapor degreasing. Qualifies for tariff item 2903.44.00 per Chapter Note 1(f) allowing stabilizers necessary for preservation or transport of pure compounds.

2903.44.00

HFC-143 High-Purity Research Grade

High-purity 1,1,2-trifluoroethane (HFC-143) at 99.999% purity for chemical research and laboratory synthesis. This separate chemically defined organic compound meets ACS reagent specifications and is classified under tariff item 2903.44.00 as a named saturated fluorinated acyclic hydrocarbon. It is used as a starting material or solvent in organic synthesis.

2903.44.00

HFC-143 Industrial Chiller Refrigerant

High-purity 1,1,2-trifluoroethane (HFC-143) for use as a refrigerant in large-scale industrial chillers and air conditioning systems. This saturated fluorinated acyclic hydrocarbon is specifically named in tariff item 2903.44.00. It is non-flammable and provides efficient heat transfer in closed-loop refrigeration systems.

2903.44.00

HFC-143 Medical Freezer Refrigerant

Pharmaceutical-grade 1,1,2-trifluoroethane (HFC-143) for ultra-low temperature medical freezers storing vaccines and biological samples. This product meets USP/NF purity standards and is classified under tariff item 2903.44.00 as a named saturated fluorinated acyclic hydrocarbon. It maintains stable low temperatures without contaminating stored materials.

2903.44.00

HFC-143 Transport Refrigeration Unit Charge

Factory charge quantity of 1,1,2-trifluoroethane (HFC-143) for refrigerated truck and container refrigeration units. This bulk-packaged saturated fluorinated acyclic hydrocarbon is specifically named in tariff item 2903.44.00. It is used to charge refrigeration systems during manufacturing or maintenance.

2903.44.00

Medical Grade HFC-143a Propellant

Pharmaceutical-grade 1,1,1-trifluoroethane (HFC-143a) for metered dose inhalers and medical aerosols. Falls under tariff item 2903.44.00 as a pure chemically defined organic compound specifically enumerated.

2903.44.00

Pentaerythritol Tetranitrate Stabilized HFC-125

Pure HFC-125 with an anti-dusting stabilizer for safe pneumatic filling is a separate chemically defined compound. The stabilizer is permitted under Chapter 29 Note 1(g) for safety reasons, provided it does not make the product suitable for a specific use, so it remains under tariff item 2903.44.00.

2903.44.00

Pentafluoroethane (HFC-125) Medical Propellant

Pharmaceutical grade HFC-125 for metered dose inhalers is a pure, separate chemically defined compound under Chapter 29 Note 1(a). It is specifically named in tariff item 2903.44.00, and its pharmaceutical grade does not change classification.

2903.44.00

Pentafluoroethane (HFC-125) Refrigerant Gas

Pentafluoroethane (HFC-125) is a hydrofluorocarbon used in refrigerant blends, supplied as a pure, chemically defined saturated fluorinated derivative. It is specifically named under tariff item 2903.44.00 and meets Chapter 29 Note 1(a).

2903.44.00

R-125 Bulk Refrigerant Tonner

Bulk R-125 refrigerant in a 1-tonne cylinder, 99.99% pure HFC-125, used for large-scale refrigeration charging in commercial AC production. This is a separate chemically defined compound, classified under tariff item 2903.44.00 as pentafluoroethane.

2903.45.00

Bulk HFC-134a Ton Tank

Bulk HFC-134a (1,1,1,2-tetrafluoroethane) in 1-ton T-104 aluminum ISO tanks, a pure chemically defined saturated fluorinated acyclic hydrocarbon. It is classifiable under tariff item 2903.45.00 as a separate chemically defined organic compound, regardless of bulk packaging, per Chapter 29 Note 1(a).

2903.45.00

HFC-134a Pharmaceutical Aerosol Propellant

USP-grade HFC-134a used as a propellant in pharmaceutical metered dose inhalers and nasal sprays. As a separate chemically defined organic compound, it falls under tariff item 2903.45.00, even though it is put up for a specific use, per Chapter 29 Note 1(a).

2903.45.00

HFC-134a (R-134a) Industrial Refrigerant Cylinder

High-purity HFC-134a (R-134a) in 30 lb refillable steel cylinders for commercial refrigeration. This pure, chemically defined saturated fluorinated hydrocarbon is classified under tariff item 2903.45.00, as packaging does not affect the tariff classification.

2903.45.00

HFC-134a Refrigerant Gas

Pure 1,1,1,2-tetrafluoroethane (HFC-134a) used as a refrigerant in automotive air conditioning and domestic refrigerators. It is a separate chemically defined organic compound, classifiable under tariff item 2903.45.00 per Chapter 29 Note 1(a).

2903.45.00

HFC-134a with Stabilizer Additive

HFC-134a containing a stabilizer additive (<0.1%) to prevent metal corrosion during storage and transport. Chapter 29 Note 1(f) permits classification under tariff item 2903.45.00 if the stabilizer is necessary for preservation or transport and does not make the product suitable for a specific use.