Chlorodifluoroethane HCFC-142b for Foam Blowing
HCFC-142b in 100 lb recovery cylinders for use as auxiliary foam blowing agent in polystyrene and polyurethane insulation. Falls under HTS 2903.74.01.00 as a pure halogenated derivative of acyclic ethane per Chapter 29 note (a). Not classifiable as Chapter 39 plastic additive.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing added stabilizers rendering it a derivative
Chapter 29 note (f) excludes stabilized products if stabilizer changes general use character.
If pre-mixed with hydrocarbons as foam blowing preparation
Mixtures for specific applications classified as chemical preparations in 3824.
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Import Tips & Compliance
• Document end-use as foam blowing to qualify for any available essential-use exemptions
• Avoid shipping during extreme heat; pressure relief valves must be rated for 142b vapor pressure
• Include GWP (Global Warming Potential) data in documentation for customs review
Related Products under HTS 2903.74.01.00
HCFC-142b Refrigerant Gas
Chlorodifluoroethane (HCFC-142b) is a hydrochlorofluorocarbon used primarily as a refrigerant in commercial cooling systems and foam blowing agent. It falls under HTS 2903.74.01.00 as a halogenated derivative of acyclic hydrocarbons containing chlorine and fluorine. This specific chemical compound matches the chapter's definition for separate chemically defined organic compounds with multiple halogens.
1-Chloro-1,1-Difluoroethane (HCFC-142b) Technical Grade
Technical grade HCFC-142b (CAS 75-68-3) is a high-purity chlorodifluoroethane used in industrial refrigeration and polyurethane foam production. Classified under HTS 2903.74.01.00 due to its chemical structure as an acyclic hydrocarbon with chlorine and fluorine halogens. Meets Chapter 29 criteria for separate chemically defined organic compounds.
DuPont Vertrel XF HCFC-142b Specialty Fluid
Vertrel XF is a high-purity HCFC-142b formulation (1-chloro-1,1-difluoroethane) used as precision cleaning solvent in electronics manufacturing. Classified under HTS 2903.74.01.00 when imported as ≥99% pure chemical compound. Distinguish from formulated solvent blends.
HCFC-142b 99.99% Electronic Grade
Ultra-high purity chlorodifluoroethane (HCFC-142b) for cleaning precision electronic components and carrier fluid in vapor degreasing. HTS 2903.74.01.00 classification as chemically defined acyclic halogenated hydrocarbon. Purity level prevents mixture classification.
HCFC-142 Refrigerant Blend Component
Pure HCFC-142 (chlorodifluoroethane) supplied for blending into R-401A/R-406A refrigerant mixtures for air conditioning systems. HTS 2903.74.01.00 applies as it's a chemically defined acyclic halogenated hydrocarbon with two different halogens. Excluded from Chapter 38 as it's not a finished mixture.