HFO-1234ze Foam Blowing Agent

1,3,3,3-Tetrafluoropropene (HFO-1234ze) serves as an environmentally friendly foam blowing agent for polyurethane insulation. Classified under HTS 2903.51.1000 as a specifically named unsaturated fluorinated acyclic hydrocarbon. Used in spray foam and panel production for building insulation.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%3.7%
🇲🇽Mexico3.7%3.7%
🇨🇦Canada3.7%3.7%
🇩🇪Germany3.7%3.7%
🇯🇵Japan3.7%3.7%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2903Same rate: 3.7%

If containing >20% cyclopentane stabilizer

Mixtures with hydrocarbon stabilizers may shift to fluorinated hydrocarbon mixtures

3824.99Higher: 15% vs 3.7%

If pre-mixed foam blowing formulations

Prepared chemical preparations for specific end-use fall outside pure Chapter 29 compounds

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Import Tips & Compliance

Include SNAP program documentation for foam blowing applications

Provide stabilization certificates as HFO-1234ze requires inhibitors for safe transport

Ensure proper placarding for UN1950 aerosols or UN3163 for refrigerated liquids

Related Products under HTS 2903.51.10.00

HFO-1234yf Refrigerant Gas

2,3,3,3-Tetrafluoropropene (HFO-1234yf) is a low global warming potential refrigerant used in automotive air conditioning systems. This unsaturated fluorinated derivative of acyclic hydrocarbons falls under HTS 2903.51.1000 due to its specific chemical structure and halogenated nature. It is supplied in pressurized cylinders for industrial and automotive applications.

HFO-1336mzz (Z) Heat Transfer Fluid

(Z)-1,1,1,4,4,4-Hexafluoro-2-butene (HFO-1336mzz) is a high-performance heat transfer fluid for immersion cooling systems. This specific unsaturated fluorinated derivative is enumerated in HTS 2903.51.1000. Used in electronics cooling and organic Rankine cycle systems.

HFO-1234yf Automotive Refrigerant Charge

Pre-charged HFO-1234yf refrigerant cylinders for automotive A/C service and retrofitting. Pure 2,3,3,3-Tetrafluoropropene meeting HTS 2903.51.1000 specifications for unsaturated fluorinated acyclic hydrocarbons. Typically 10lb cylinders for professional technician use.

HFO-1234ze Spray Polyurethane Foam Precursor

HFO-1234ze (1,3,3,3-Tetrafluoropropene) specifically formulated as B-component blowing agent for spray polyurethane foam systems. Meets HTS 2903.51.1000 as pure named compound though destined for immediate chemical reaction. Supplied in returnable steel drums.

HFO-1234yf Electronic Grade Refrigerant

Ultra-high purity HFO-1234yf (>99.99%) for precision cooling in semiconductor manufacturing. Specifically identified unsaturated fluorinated hydrocarbon under HTS 2903.51.1000. Supplied in low-particulate cylinders for cleanroom use.

HFO-1336mzz Data Center Immersion Fluid

(Z)-HFO-1336mzz dielectric fluid for single-phase immersion cooling of servers. Pure compound of HTS 2903.51.1000 used in high-density computing environments. Non-ozone depleting with 99% lower GWP than traditional fluids.