Description
Hydrofluoroethers (HFEs) are chemical compounds composed of hydrogen, fluorine, oxygen, and carbon atoms, featuring a characteristic ether structure. With an Ozone Depletion Potential (ODP) of zero, a low Global Warming Potential (GWP), and an exceptionally short atmospheric lifetime, HFEs are widely considered ideal alternatives to chlorofluorocarbons (CFCs).
Performance & Applications
In addition to its excellent environmental properties, hydrofluoroether (HFE) features outstanding thermal and chemical stability, moderate solvency, low toxicity, non-corrosiveness, non-flammability, residue-free performance (no smoke or soot generation), and broad material compatibility. It is easy to store and transport, making it widely utilized across numerous fields, including medical care, electronics, metals, precision instruments, optical lenses, telecommunications, and aerospace.
Environmental Certifications & Special Grades (HFE-7100 / 7200)
Listed as approved cleaning agents and refrigerants under the Significant New Alternatives Policy (SNAP) program by the U.S. Environmental Protection Agency (EPA), HFE-7100 and HFE-7200 are designated as “Acceptable” (approved for use without restrictions). Furthermore, they have been excluded from the EPA’s definition of Volatile Organic Compounds (VOCs). These grades are ideally suited for manufacturing sectors such as precision instruments, electronics, semiconductors, high-end medical equipment, and aerospace.
Parameter
| Property / Factor | Unit | HR7000 | HR7100 | HR7200 | HR7300 | HR7500 |
| Material Description | ||||||
| Chemical Composition | C3F7OCH3 | C4F9OCH3 | C4F9OC2H5 | C6F13OCH3 | C7F15OC2H5 | |
| CAS No. | 375-03-1 | 163702-08-7 | 163702-06-5 | 132182-92-4 | 1032934-86-3 | |
| Molecular Weight | g/mol | 200 | 250 | 264 | 250 | 414 |
| Purity | % | 99.5 | 99.5 | 99.5 | 99.5 | 99.5 |
| Non-Volatile Residue (NVR) | ppm | <2.0 | <2.0 | <2.0 | <2.0 | <2.0 |
| Appearance | Colorless & Transparent | Colorless & Transparent | Colorless & Transparent | Colorless & Transparent | Colorless & Transparent | |
| Physicochemical Properties | ||||||
| Boiling Point | ℃ | 34 | 61 | 76 | 98 | 128 |
| Pour Point | ℃ | -123 | -135 | -138 | -38 | -100 |
| Critical Temperature | ℃ | 165 | 195 | 210 | 243 | 261 |
| Critical Pressure | MPa | 2.43 | 2.23 | 2.01 | 1.88 | 1.55 |
| Vapor Pressure | kPa | 65 | 27 | 16 | 5.9 | 2.1 |
| Heat of Vaporization | J/g | 145 | 112 | 119 | 102 | 89 |
| Liquid Density | g/cm3 | 1.4 | 1.52 | 1.43 | 1.67 | 1.62 |
| Specific Heat | J/kg-℃ | 1300 | 1183 | 1220 | 1140 | 1128 |
| Thermal Conductivity | W/m-℃ | 0.07 | 0.069 | 0.068 | 0.063 | 0.065 |
| Water Solubility | ppmw | 60 | 95 | 92 | 67 | 45 |
| Dielectric Strength (0.1″ gap) | kV | >25 | >25 | >25 | >25 | >25 |
| Dielectric Constant @ 1kHz | – | 7.4 | 7.52 | 7.35 | 6.1 | 5.3 |
| Volume Resistivity | Ohm-cm | 108 | 108 | 108 | 108 | 108 |
| Environment & Safety | ||||||
| Ozone Depletion Potential (ODP) | – | 0 | 0 | 0 | 0 | 0 |
| Global Warming Potential (GWP) | – | 420 | 297 | 59 | 310 | 100 |
| Atmospheric Lifetime | Year | 4.9 | 4.1 | 0.77 | 3.8 | 2.2 |
| Flash Point | ℃ | None | None | None | None | None |
