Products
Fluorinert™（Fluorine-type inert liquid）
This product has been discontinued following 3M's withdrawal from its PFAS business on December 31, 2025.
If you are looking for an equivalent product, please refer to the product page below.
A colorless, clear, fluorine-type inert liquid
Fluorinert™（Fluorine-type inert liquid） is a colorless, clear, fluorine-type inert liquid with high stability.In addition, because it is inert and has little effect on constituent materials, refrigerant applications and electronic components, etc., can be tested in a directly-immersed state.
- Has superior electrical insulation properties and thermal conductivity.
- Does not dissolve in various solvents, whether at high or low temperature.
- Completely inert, and does not eat into metals, plastics, rubber, etc.
- Has very low surface tension (12 to 18 dynes/cm 25°C) and superior permeability.
- It is safe, being non-flammable, non-toxic, and odorless.
List of typical physical characteristics (Not specification values)
| Characteristics | FC-3283 | FC-40 | FC-43 | |
|---|---|---|---|---|
| Boiling point °C | 128 | 155 | 174 | |
| Flow point °C | -50 | -57 | -50 | |
| Density | (@25°C) kg/m3 | 1,830 | 1,870 | 1,880 |
| (@-54°C) kg/m3 | - | - | - | |
| Kinetic viscosity | (@25°C) cSt | 0.82 | 2.2 | 2.8 |
| (@-54°C) cSt | - | - | - | |
| Steam pressure (@25°C) MPa | 0.00133 | 0.0004 | 0.000173 | |
| Specific heat (@25°C) J/kgK | 1,050 | 1,050 | 1,050 | |
| Evaporation heat (boiling point) kJ/kg | 84 | 71 | 71 | |
| Thermal conductivity (@25°C) W/mk | 0.067 | 0.067 * | 0.067 | |
| Coefficient of expansion m3/m3・K | 0.0013 | 0.0012 | 0.0012 | |
| Surface tension mN/m | 16 | 16 | 16 | |
| Refractive index (@25°C) | 1.281 | 1.29 | 1.291 | |
| Insulation resistance (@25°C) kV (2.54 mm Gap) | 43 | 46 | 42 | |
| Permittivity (@25°C) [1 kHz] | 1.91 | 1.89 | 1.9 | |
| Dielectric tangent (@25°C) [1 kHz] | < 0.0004 | < 0.0003 | < 0.0001 | |
| Volume resistivity Ω-m | > 1.0×1014 | 4.0×1013 | 3.4×1013 | |
| Amount of water dissolved (Wt.) | 11 | 7 | 7 | |
| Amount of air dissolved m3gas/100m3liquid | 34 | 27 | 26 | |
* are calculated values.
Main Applications
- Freon replacement (refrigerants, solvents, washing, etc.)
- Gross leak test of electronic components (ICs, LSI, etc.)
- Various reliability tests
- VPS (Vapor-phase soldering)
- Others (operating fluids for heat pipes, insulation solvents, etc.)
