Low Temperature Pure Silicone Bath Fluids are clear, colorless & odorless Polydimethylsiloxane fluids that will remain stable and have little viscosity change at temperatures as low as –80°C

Synonyms: low temperature bath fluids, low temperature silicone bath fluids, low temp synthetic bath fluids, low viscosity silicones, low viscosity polydimethylsiloxane, low viscosity polydimethylsiloxanes, low viscosity PDMS, low viscosity PDM fluids, low viscosity DM fluids, low temperature silicones, silicone low temperature, silicone fluid for constant temperature baths, low VTC fluids, refrigerated bath fluids, silicone fluids for freeze drying equipment, linear polydimethylsiloxane, low viscosity PDMS, DMS, low viscosity DM fluids, DC 200, 1.5cs, DC 200, 5cs, DC 200, 10cs, DC 200, 20cs, SF96-5, SF96-10, SF96-20, Rhodorsil 47V-20, Rhodorsil 47V-5, Baysilone KT-3, Baysilone KT-5, Baysilone KT-20, Shinetsu DM-5, Shinetsu DM-10, Shinetsu DM-20, Baysilone M3, Baysilone Oil M5, Baysilone Oil N10, Baysilone M20

Low Temperature Silicone Bath Fluids

PSF-2cSt Low Temperature Bath Fluid (-80°C to 120°C closed system only)
PSF-5cSt Low Temperature Bath Fluid (-70°C to 65°C open system) (-70°C to 150°C closed system)
PSF-10cSt Low Temperature Bath Fluid (-60°C to 100°C open system (-60°C to 200°C closed system)
PSF-20cSt Low Temperature Bath Fluid (-50°C to 150°C open system) (-50°C to 220°C closed system)

Chemical Composition: Linear Polydimethylsiloxane (Dimethylpolysiloxane) Fluids

Product Equivalent: Dow Corning 200® fluid, 2cs, Dow Corning 200® fluid, 5cs, Dow Corning 200® fluid, 10cs, Dow Corning 200® fluid, 20cs, Baysilone Oil M3, Baysilone Oil M5, Baysilone Oil M10, Baysilone Oil M20, 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, Xiameter® PMX-200 Silicone Fluid 5cs, Xiameter® PMX-200 Silicone Fluid 10cs, Xiameter® PMX-200 Silicone Fluid 20cs, Momentive Element® 14 PDMS 5, Momentive Element® 14 PDMS 10, Momentive Element® 14 PDMS 20, Hart Scientific 5010 Silicone Oil Type 200.05, Hart Scientific 5012 Silicone Oil Type 200.10, Hart Scientific 5013 Silicone Oil Type 200.20

Low Temperature Pure Silicone Bath Fluids are low-viscosity linear 100% Polydimethylsiloxane fluids 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.

Low Temperature Silicone Bath Fluids encompass a viscosity range from 2cSt to 20cSt* (measures @ 25°C). 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.

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 @99°C ÷viscosity @ 38°C. Thus, the lower the VTC #, the lower the viscosity changes. This is critical for baths that have pumping systems that cannot operate with higher viscosity fluids. For the lowest temperature stability, we recommend the PSF-2cSt.

Bath Applications include: low temperature open system baths, low temperature closed system baths, low temperature constant temperature baths, low temperature circulating baths, low temperature circulator 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, silicone fluid for temperature control systems

*cSt (cs) is a centistokes [mm2/sec]... measure of kinematic viscosity
**Closed system baths are systems from which air has been excluded.

Properties

100% Linear Polydimethylsiloxane Fluids
Clear, colorless & odorless fluids... allows you to see instrumentation inside of the bath.
Low viscosity: excellent viscosities for circulating baths.
Low pour points
Excellent low temperature stability with little viscosity increase (low VTC)
Exhibit significantly less viscosity change than petroleum based oils.
Formulated from synthetic sources.
Long service life when used for recommended temperature ranges.
Inert to virtually all bath instrumentation and plastics
Environmentally friendly – VOC Exempt & HAP Free
Hydrophobic- will not absorb water
High Dielectric Strength

View the comparison between 1.5cSt, 2cSt, 3cSt, 5cSt, 10cSt and 20cSt Low Temperature Bath Fluids

Download the Low Temp Bath Fluids Matrix (PDF)

Product Data

Property	PSF-2cSt	PSF-5cSt	PSF-10cSt	PSF-20cSt
Chemical family	Polydimethyl-siloxane	Polydimethyl-siloxane	Polydimethyl-siloxane	Polydimethyl-siloxane
Chemical name	Polydimethyl-siloxane	Polydimethyl-siloxane	Polydimethyl-siloxane	Polydimethyl-siloxane
CAS #	63148-62-9	63148-62-9	63148-62-9	63148-62-9
Appearance	clear, colorless	clear, colorless	clear, colorless	clear, colorless
Odorless	Yes	Yes	Yes	Yes
Hydrophobic	Yes	Yes	Yes	Yes
Viscosity @ 25°C	2cSt	5cSt	10cSt	20cSt
V.T.C.	0.48	0.54	0.56	0.59
Soluble in water	No	No	No
Pour point	-100°C	-90°C	-70°C	-60°C
Flash point	75°C	135°C	163°C	232°C
Boiling point	229°C	>200°C	>200°C	>230°C
Vapor pressure @ 25°C	1mmHg	<1mmHg	<1mmHg	<1mmHg
Specific heat @ 25°C J/g °C	1.8	1.8	1.8	1.7
Thermal expansion cc/cc/°C	0.00117	0.00112	0.00108	0.00107
Thermal conductivity g/cal/cm/sec °C	0.00026	0.00028	0.00032	0.00034
Open system Service temperature	Closed system only	-70°C to 65°C	-60°C to 100°C	-50°C to 120°C
Closed system Service temperature	-80°C to 120°C	-70°C to 150°C	-60°C to 200°C	-50°C to 220°C