TUW-72 Electronic Fluorinated Fluid

TUW-72 Electronic Fluorinated Fluid is a perfluorinated liquid based on perfluorohexane (C₆F₁₄), with a 50–60 °C boiling range, a typical boiling point of 56 °C and 1.68 g/mL density. It is colourless, odourless, non-flammable and completely immiscible with water. The perfluorinated chemistry is extremely inert — no reaction with metals, plastics or elastomers, no acidic breakdown products in service — and it does not conduct, which is why the same fluid serves both as a dielectric test medium and as a direct-contact coolant.
For customers replacing 3M Fluorinert FC-72, TUW-72 Electronic Fluorinated Fluid sits at the same performance level: boiling point, density and viscosity are close, so bubble formation, evaporation rate and residue behaviour in leak testing carry over and the hardware usually needs no change.

 

- Appearance: Clear, colourless liquid, odourless
- Boiling range: 50–60 °C (typically 56 °C)
- Density (25 °C): 1.68 g/mL
- Kinematic viscosity (20 °C): 0.4 mm²/s
- Vapour pressure (25 °C): 29.6 kPa
- Vapour density (air = 1): about 11.7
- Flash point: None
- Water solubility: 0 (immiscible)
- ODP: 0
- CAS: 86508-42-1 (main component perfluorohexane 355-42-0)
- Average molecular weight: 338
- Decomposition products: HF and other fluorides at high temperature

 

1. Electronic leak detection — Gross leak and bubble testing to MIL-STD-883 and similar standards, plus hermeticity testing of sealed devices, connectors and sensors.
2. Dielectric and insulation testing — Test medium for high-voltage devices, transformers and capacitors — evaporates clean with no film.
3. Immersion and two-phase cooling — Single-phase immersion or boiling cooling for servers, power modules, lasers and RF amplifiers.
4. Semiconductor and electronics cleaning — Final rinse of wafer carriers, optics and vacuum components where particle and ionic limits are tight.

 

At 1.68 times the density of water, the fluid pools at the lowest point when spilled — fit bunds and recovery sumps in equipment rooms. Let parts drain and purge fully after leak testing. Because the fluid is completely immiscible with water, ingress does not emulsify; water floats on top and should be drawn off periodically.
The fluid is non-flammable with no flash point and is not dangerous goods. Thermal decomposition releases hydrogen fluoride, so heated or soldering-adjacent processes need exhaust and over-temperature protection. Distil spent fluid for recovery, and route residues to a licensed contractor — never to drain.

 

25 kg pails and 250 kg drums, with 5 L and 20 L trial packs. Stocked in South China and shipped with TDS, SDS and batch COA. TUW-72 Electronic Fluorinated Fluid can also be released in project batches to match leak-test line top-up schedules.