Description :
sigma THERM®- G is a synthetic organic heat transfer fluid based on Partially Hydrogenated Terphenyl or Modified Terphenyl. This chemistry have been used successfully in high temperature application since so many years.
Application :
Liquid Phase : (-3) °C – 350 °C
It is highly recommended to use Nitrogen Blanket in Expansion tank to prevent oxidation of heat transfer fluid.
Benefits :
- Thermally more stable thermic fluid than the ones available in market for low pressure liquid phase heat transfer
- Non- corrosive to metal
- sigma THERM®- G can also be used for top up / make up for the system containing other similar fluids
Compatibility :
Metal : sigma THERM®- G is compatible with all metals.
Typical Properties :
| Composition | Modified Terphenyl / Partially Hydrogenated Terphenyl |
| Appearance | Clear Pale Yellow Liquid |
| Max. Bulk Temperature, º C | 350 |
| Max. Film Temperature, º C | 375 |
| Kin. Vis. @ 40˚C, cSt | 29 - 31 |
| Pour Point , º C | < (-15) |
| Specific Gravity @ 20 ˚ C | 1002 - 1022 |
| Auto Ignition Temp. ˚C | 380 |
| Average Molecular Weight | 252 |
| Flash Point ˚C | 175 - 185 |
| Chlorine ( mg/kg) | < 10 |
| Acid Number ( mg KOH /g) | < 0.05 |
| Moisture content, ppm | > 125 |
| Copper Corrosion | <<1 |
| Pseudo critical Temperature,˚ C | 569 |
| Pseudo critical Pressure, bar | 24 |
| Pseudo critical Density kg/m3 | 317 |
Packing :
200 Kg., 35 Kg.