Medium Temperature Pure Silicone Bath Fluids are clear, odorless fluids that will remain stable @ 170ºC open system and 230ºC closed system.

Synonyms: Silicone bath fluid, silicone heat transfer fluid, silicone calibration bath fluid, Dimethylpolysiloxane bath fluid, polydimethylsiloxane bath fluid, inert bath fluid, polydimethylsiloxane, polydimethylsiloxane heat transfer fluid, Dimethylpolysiloxane heat transfer fluid, bath fluid oil, silicone bath fluid oil, Polydimethylsiloxanes, silicone oil, liquid silicone, silicone liquid, 100% silicones, dimethyl silicone oils, , CAS 63148-62-9, CAS# 63148-62-9, CAS63148-62-9, silicone bath fluid, silicone heat transfer fluids, silicone, PDMS fluids, PDMS silicone, oils, Dow Corning 200 silicone oils, General Electric Silicone, GE SF96 silicone, SF96 fluids, GE SF96 silicones, Dow Corning 200 silicone oils, DC 200 silicone fluids, Dc 200, 20cs, DC 200 fluid, 50cs, DC 200 fluid, 100cs, DC 200 fluid, 200cs, DC 200 Fluid, 350cs, DC 200 fluid, Dc200-50, DC 200-100, DC 200VV-D-1078, VV-D-1078 Damping Fluid, Wacker AK silicone, Wacker AK silicones, Wacker AK fluids, Wacker AK 50, Wacker AK 100, Rhodia silicones, PDMS fluids, Shinetzu silicones, Shinetzu DM-fluids, DM-fluid-50, DM-fluid-100, DM-fluid-200, Rhodorsil 47V50, Rhodorsil 47V100

Medium Temperature Silicone Bath Fluids

PSF-20cSt Medium Temperature Bath Fluid (-50ºC to 120ºC open system) (-50ºC to 220ºC closed system)
PSF-50cSt Medium Temperature Bath Fluid (-40ºC to 170ºC open system) (-40ºC to 230ºC closed system)
PSF-100cSt Medium Temperature Bath Fluid (-40ºC to 170ºC open system) (-40ºC to 230ºC closed system)

Chemical Composition: Linear Polydimethylsiloxane (CAS# 63148-62-9)

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

Use: Clearco Medium Temperature Pure Silicone Bath Fluids are medium-viscosity linear Polydimethylsiloxane (CAS # 63148-62-9) that are formulated for medium temperature baths and medium temperature heat transfer applications. These fluids are clear, colorless, odorless, and inert to virtually all bath instruments and plastics.

The Medium Temperature Silicone Fluids encompass a viscosity range from 20cSt to 100cSt* (measures @ 25ºC). 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

Clear, colorless & odorless fluid…. allows you to see instrumentation inside of the bath.
High flash points
Wide operating 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

The Pure Silicone Fluids 50cSt and 100cSt Bath Fluids will remain stable @ 150ºC (open system [presence of air]) for approximately 1-year without breakdown or gelling. At 200ºC (open system), PSF-100cSt will remain stable for approximately 250 to 300 hours without gelling (see chart below). However, for prolonged periods above 200ºC, we recommend the DPDM-400 or PM-125 Fluids. In closed systems**, these medium temperature silicone bath fluids have a maximum long term operating temperature of 230ºC.

**Closed system baths are systems from which air has been excluded.

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

Bath Applications include: open system baths, closed system baths, constant temperature baths, circulating thermal temperature baths, closed loop baths, heat transfer baths, heat transfer fluids, thermostat fluids, calibration bath fluids, flow test fluids.

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	20cSt	50cSt	20cSt
V.T.C.	0.59	0.59	0.60
Pour point	-60ºC	-60ºC	-60ºC
Flash point	232ºC	285ºC	315ºC
Thermal expansion	0.00107	0.00106	0.00093
Thermal conductivity	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