Low Temperature Silicone Bath Fluids
PSF-1.5cSt Low Temperature Bath Fluid (-65ºC to 25ºC closed system only)
PSF-3cSt Low Temperature Bath Fluid (-60ºC to 20ºC open system) (-60C to 90ºC closed system)
PSF-5cSt Low Temperature Bath Fluid (-50ºC to 65ºC open system) (-50ºC to 120ºC closed system)
PSF-10cSt Low Temperature Bath Fluid (-50ºC to 100ºC open system (-50ºC to 150ºC closed system)
PSF-20cSt Low Temperature Bath Fluid (-50ºC to 150ºC open system) (-50ºC to 220ºC closed system)
Chemical Composition: Linear Polydimethylsiloxane (Dimethylpolysiloxane)
Product Equivalent: Dow Corning 200 Fluid, 1.5cs, Dow Corning 200 fluid, 5cs, Dow Corning 200 fluid, 10cs, Dow Corning 200 fluid, 20cs, Baysilone KT3, Baysilone KT5, Baysilone KT10, Baysilone KT20, GE SF96-5, GE SF96-20, Shinetsu DM-5, Shinetsu DM-10, Shinetsu DM-20, Rhodorsil 47V-5, Rhodorsil 47V-10, Rhodorsil 47V-20.
Use: Clearco Low Temperature Pure Silicone Bath Fluids are low-viscosity linear Polydimethylsiloxane that are formulated for Low Temperature Baths and Low Temperature Heat Transfer Applications. Low Temperature Pure Silicone Bath Fluids are clear, colorless, odorless, and inert to virtually all bath instruments and plastics.
The Low Temperature Silicone Bath Fluids encompass a viscosity range from 1.5cSt to 20cSt* (measures @ 25ºC). Due to their low flash points and high rates of volatility, viscosities below 5cSt are not recommended for thermal applications above ambient temperatures in open systems. High rates of evaporation will require frequent replenishment. PSF-1.5cSt is recommended for closed system only. However, in closed system baths**, they have much higher operating temperature ranges.
Low Temperature Silicone Bath Fluids have low viscosity-temperature coefficients (VTC), and will experience little viscosity increase even at extremely low temperatures. The Viscosity-temperature coefficient or VTC is a measure of viscosity @99ºC ÷viscosity @ 38ºC. Thus, the lower the VTC #, the lower the viscosity change. This is critical for baths that have pumping systems that cannot operate with higher viscosity fluids.
Bath Applications include: low temperature open system baths, low temperature closed system baths, constant temperature baths, low temperature circulating baths, low temperature refrigerated baths, low temperature closed loop baths, heat transfer baths, heat transfer fluid in freeze drying equipment, thermostats and cryostat fluids, calibration bath fluids for low temperature.
*cSt (cs) is a centistokes…measure of kinematic viscosity
**Closed system baths are systems from which air has been excluded.
Properties
- Clear, colorless & odorless fluid…. allows you to see instrumentation inside of the bath.
- Low pour points
- Excellent low temperature stability with little viscosity increase (low VTC)
- Exhibits less viscosity change than petroleum based oils,
- 100% polydimethylsiloxane fluid
- Inert to virtually all bath instrumentation and plastics
- Environmentally friendly – VOC Exempt
- Hydrophobic- will not absorb water
| Property | PSF-1.5cSt | PSF-3cSt | PSF-5cSt | PSF-10cSt | PSF-20cSt |
| Chemical name | Polydimethylsiloxane | Polydimethylsiloxane | Polydimethylsiloxane | Polydimethylsiloxane | Polydimethylsiloxane |
| CAS # | 141-62-8 | 63148-62-9 | 63148-62-9 | 63148-62-9 | 63148-62-9 |
| Appearance | clear, colorless | clear, colorless | clear, colorless | clear, colorless | clear, colorless |
| Odorless | Yes | Yes | Yes | Yes | Yes |
| Hydrophobic | Yes | Yes | Yes | Yes | Yes |
| Viscosity @ 25ºC | 1.5cSt | 3cSt | 5cSt | 10cSt | 20cSt |
| V.T.C. | 0.46 | 0.51 | 0.54 | 0.56 | 0.59 |
| Pour point | -75ºC | -70ºC | -65ºC | -65ºC | -60ºC |
| Flash point | 63ºC | 100ºC | 135ºC | 163ºC | 232ºC |
| Thermal expansion | 0.00134 | 0.00114 | 0.00112 | 0.00108 | 0.00107 |
| Thermal conductivity | 0.00025 | 0.00027 | 0.00028 | 0.00032 | 0.00034 |
| Open system Service temperature | Closed system only | -60ºC to 20ºC | -50ºC to 65ºC | -50ºC to 100ºC | -50ºC to 120ºC |
| Closed system Service temperature | -65ºC to 25ºC | -60ºC to 90ºC | -50ºC to 120ºC | -50ºC to 150ºC | -50ºC to 220ºC |
Availability: 1-gallon, 5-gallon pail & 55-gallon drums
View Products Specs:
PSF 1.5cSt | PSF 3cSt | PSF 5cSt | PSF 10cSt | PSF 20cSt