Chemical Name: Polydimethylsiloxane Fluid / PDMS Silicone Oil
CAS No: 63148-62-9
View product specs:
PSF-20cSt Silicone Bath Fluid (-50ºC to 120ºC open system) (-50ºC to 220ºC closed system)
PSF-50cSt Silicone Bath Fluid (-40ºC to 170ºC open system) (-40ºC to 230ºC closed system)
PSF-100cSt Silicone Bath Fluid (-40ºC to 170ºC open system) (-40ºC to 230ºC closed system)
View product specs:
PSF-20cSt Silicone Bath Fluid (-50ºC to 120ºC open system) (-50ºC to 220ºC closed system)
PSF-50cSt Silicone Bath Fluid (-40ºC to 170ºC open system) (-40ºC to 230ºC closed system)
PSF-100cSt Silicone Bath Fluid (-40ºC to 170ºC open system) (-40ºC to 230ºC closed system)
View SDS:
PSF-20cSt Silicone Bath Fluid
PSF-50cSt Silicone Bath Fluid
PSF-100cSt Silicone Bath Fluid
Availability: 1-gallon (3.6kg), 5-gallon (18kg) & 55-gallon drums (200kg)
Product Equivalent: Dow Corning 200® Fluid, 20cs, Dow Corning 200® fluid, 50cs, Dow Corning 200® fluid, 100cs, Baysilone KT3, Baysilone KT5, Baysilone KT10, Baysilone KT20, GE SF96-20,GE SF96-50, GE SF96-100, Wacker AK-50, Wacker AK-100, Shinetsu DM- 20cs, Shinetsu DM-50cs, Shinetsu DM-100cs, Momentive Element® 14 PDMS 20, Momentive Element® 14 PDMS 50, Momentive Element® 14 PDMS 100, Rhodorsil® 47 V 50, Rhodorsil® 47 V 100, Xiameter® PMX-200 Silicone Fluid 20cs, Xiameter® PMX-200 Silicone Fluid 50cs, Xiameter® PMX-200 Silicone Fluid 20cs, Hart Scientific 5013 Silicone Oil Type 200.20, Fluke® 5013 Silicone Oil Type 200.20, Hart Scientific® 5014 Silicone Oil Type 200.50, Fluke® Scientific 5014 Silicone Oil Type 200.50, Cole Palmer® R-01294-40 Silicone 200 20.
Medium Temperature Pure Silicone Bath Fluids are clear, colorless and odorless linear PDMS Silicone oils (CAS # 63148-62-9) with viscosity of 20cSt*, 50cSt and 100cst @ 25C. These fluids are characterized by their high flash points, wide operating temperature ranges, high resistance to oxidation, low viscosity change at temperature, low vapor pressures, high dielectric strength, good heat capacity values, and inertness to virtually all plastics, rubbers and bath fluid instrumentation (not recommended for contact with silicone O-rings). As such, they are widely used as laboratory bath fluids and heat transfer fluids.
Medium Temperature Silicone Fluids encompass a viscosity range from 20cSt to 100cSt* (measures @ 25°C). Clearco Medium Temperature Silicone Bath Fluids are characterized by their high flash points, wide operating temperature ranges, high resistance to oxidation, low viscosity change at temperature, low vapor pressures, and inertness to virtually all plastics, rubbers and bath fluid instrumentation (not recommended for contact with silicone o-rings).
*cSt (cs) is a centistokes…measure of kinematic viscosity
Properties
- 100% Linear Polydimethylsiloxane Fluids
- Clear, colorless & odorless fluid… allows you to see instrumentation inside of the bath.
- High flash points
- High Boiling Points
- Wide operating service temperature range
- Low vapor pressure
- High resistance to oxidation
- 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
PSF-50cSt and 100cSt Silicone Bath Fluids remain stable @ 150°C (open system [presence of air]) for approximately 1-year without breakdown or gelling. At 200°C (open to air system), PSF-100cSt remains stable for approximately 250 to 300 hours without gelling (see chart below). However, for prolonged periods above 200°C in open to air systems, we recommend the DPDM-400 or PM-125 Fluids.
**Closed system baths are systems from which air has been excluded.Medium temperature silicone bath fluids have a maximum long term operating temperature of 230°C.
Gel Time of Pure Silicone Fluid 100cSt @ Temperature (open system)
| 149ºC | 204ºC | 250ºC | 260ºC | 300ºC |
|---|---|---|---|---|
| Approx 1-year | 250 to 300 hours | 40 to 60 hours | 20 to 25 hours | < 24 hours |
Product Data:
| Property | PSF-20cSt | PSF-50cSt | PSF-100cSt |
|---|---|---|---|
| Chemical name | Polydimethylsiloxane | Polydimethylsiloxane | Polydimethylsiloxane |
| CAS # | 63148-62-9 | 63148-62-9 | 63148-62-9 |
| Appearance | clear, colorless | clear, colorless | clear, colorless |
| Odorless | Yes | Yes | Yes |
| Hydrophobic | Yes | Yes | Yes |
| Viscosity @ 25ºC | 50cSt | 20cSt | 20cSt |
| V.T.C. | 0.59 | 0.59 | 0.60 |
| Solubility in water | No | No | No |
| Pour point | -60ºC | -60ºC | -60ºC |
| Flash point | 232ºC | 285ºC | 315ºC |
| Boiling point | >232°C | >232°C | >232°C |
| Specific heat J/g °C | 1.5 | 1.5 | 1.5 |
| Thermal expansion cc/cc/°C | 0.00107 | 0.00106 | 0.00093 |
| Thermal conductivity g/cal/cm/sec °C | 0.00034 | 0.00036 | 0.00037 |
| Open system Service temperature | -50ºC to 120ºC | -40ºC to 170ºC | -40ºC to 230ºC |
| Closed system Service temperature | -50ºC to 220ºC | -40ºC to 230ºC | -40ºC to 230ºC |