Galden® PFPE HT fluids are inert, dielectric, and high-performance heat transfer fluids with boiling points ranging from 55°C to 270°C. A line of 9 different dielectric fluids, their broad range of boiling points allows the most suitable fluid to be selected for a particular application. Galden HT was developed to meet the increasingly demanding and diversified needs of various industries ranging from semiconductor to nuclear and pharmaceutical.
Typical Properties | Galden HT |
---|---|
Specific Heat at 25ºC (cal/g*C) | 0.23 |
Thermal Conductivity at 25ºC (W/m*C) | 0.065 |
Coefficient of Expansion (cm3/cm3*C) | 0.0011 |
Dielectric Strength at 25ºC (KV, 2.54 mm gap) | 40 |
Dissipation Factor at 25ºC (1Khz) | 2x10-4 |
Solubility of Water (ppm, wt) | 14 |
Solubility of Air (cm3 gas, 100cm3 liquid) | 26 |
Typical Properties | HT 55 | HT70 | HT80 | HT 110 | HT 135 | HT 170 | HT 200 | HT 230 | HT 270 |
---|---|---|---|---|---|---|---|---|---|
Boiling Point (ºC) | 55 | 70 | 80 | 110 | 135 | 170 | 200 | 230 | 270 |
Pour Point (ºC) | <-115 | <-115 | <-110 | <-110 | <-100 | -97 | -85 | -77 | -66 |
Density at 25ºC (g/cm3) | 1.65 | 1.68 | 1.69 | 1.71 | 1.72 | 1.77 | 1.79 | 1.82 | 1.85 |
Kinematic Viscosity at 25ºC (cSt) | 0.45 | 0.50 | 0.57 | 0.77 | 1 | 1.8 | 2.4 | 4.4 | 11.7 |
Vapor Pressure at 25ºC (torr) | 225 | 141 | 105 | 17 | 5.8 | 0.8 | 0.2 | 0.025 | 3x10-3 |
Heat of Vaporization at Boiling Point (cal/g) | 22 | 17 | 17 | 17 | 16 | 16 | 15 | 16 | 15 |
Surface Tension at 25ºC (dyne/cm) | 16 | 14 | 16 | 16 | 17 | 18 | 19 | 19 | 20 |
Refractive Index at 25ºC | 1.28 | 1.28 | 1.28 | 1.28 | 1.28 | 1.28 | 1.281 | 1.283 | 1.283 |
Dielectric Constant at 25ºC (1 Khz) | 1.86 | 1.86 | 1.89 | 1.9 | 1.9 | 1.9 | 1.94 | 1.94 | 1.94 |
Volume Resistivity (Ohm-cm) | 5x1012 | 5x1015 | 5x1015 | 5x1015 | 5x1015 | 5x1015 | 5x1015 | 5x1015 | 5x1015 |
Average Molecular Weight | 340 | 410 | 430 | 580 | 610 | 760 | 870 | 1020 | 1550 |
Typical Properties | HT90 (discontinued by manufacturer) |
---|---|
Boiling Point (ºC) | 90 |
Pour Point (ºC) | <-110 |
Density at 25ºC (g/cm3) | 1.69 |
Kinematic Viscosity at 25ºC (cSt) | 0.75 |
Vapor Pressure at 25ºC (torr) | 48 |
Heat of Vaporization at Boiling Point (cal/g) | 17 |
Surface Tension at 25ºC (dyne/cm) | 16 |
Refractive Index at 25ºC | 1.28 |
Dielectric Constant at 25ºC (1 Khz) | 1.9 |
Volume Resistivity (Ohm-cm) | 5x1015 |
Average Molecular Weight | 460 |