Clearco Products

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High Temperature Silicone Bath Fluids

Products Description: High Temperature Silicone Bath Fluids are polydimethylsiloxane fluids that are characterized by their high thermal stability, high resistance to oxidation, low vapor pressure, high flash points, high dielectric strength and compatibility with virtually all surfaces including metal, rubbers, plastics. They have operating service temperature ranges as high as 250C (open system) and 300C (closed system).

DPDM-400 and PM-125 High Temperature Silicone Bath Fluids are clear, odorless fluids that will remain stable at temps of 250ºC (open system)

HT-110 High Temp Bath Fluid is a polydimethylsiloxane formulated with an iron-siloxane additive…essentially a "Dimethyl silicone on steroids".

Synonyms: Diphenyl-dimethylsiloxane, Diphenyl silicone, phenyl silicone, phenyl-based silicone, low temperature phenyl bath fluid, high temperature phenyl bath fluid, CAS 68083-14-7, , GE SF1154, silicone, GE SF1154 silicone bath fluid, Shinetsu KF-54, Shinetsu KF-965 phenyl silicone fluid, low temperature laboratory bath fluid, high temperature heat transfer silicone fluid, aromatic silicone, wide temperature range laboratory bath fluid, wide temp range silicone bath fluid, high temp phenyl bath fluid.phenylmethyl silicone, phenyl silicone, , thermal silicones, high temperature silicone, clear high temperature silicones, Dow Corning® 550, & Dow Corning® 550 Fluids, GE SF1154, Shinetsu KF-54, KF 54, high phenyl content silicone, high temperature bath fluid, clear high temp bath fluid, odorless high temperature bath fluid, 250C stability fluid, CAS# 63148-52-7, CAS 63148-52-7, high temperature silicone bath fluid, phenyl silicone bath fluid, high shear phenyl silicone, high, phenyl heat exchange fluid, thermal silicone, thermal silicone fluids, high refractive index silicone, heating bath silicone, 250C heating bath silicone, heat transfer silicone, phenyl silicone for heat transfer, aromatic silicone, high oxidation resistance silicone, phenyl phenylmethyl-dimethyl silicone.

High Temperature Silicone Bath Fluids

DPDM-400 High Temperature Bath Fluid (25ºC to 250ºC open system) (25ºC to 300ºC closed system)
PM-125 High Temperature Bath Fluid (25ºC to 230ºC open system) (25ºC to 300ºC closed system)
HT-110 High Temperature Bath Fluid (-40ºC to 220ºC open system) (-40ºC to 220ºC open system)

Product Equivalent:
DPDM-400: Shinetsu KF54, GE SF1154, SF1154,
PM-125: Dow Corning 550 Fluid, DC 550, 50cs,
HT-110: Dow Corning 210H, Shinetsu KF 965-100cs

Product Alternative: DPDM-400 & PM-125 High Temperature Bath Fluid are cost-effective alternatives for DC 710 Fluid or Silicone Oil Type 710.

Use: Clearco High Temperature Silicone Bath Fluids are formulated for high temperature baths applications and high temperature heat transfer applications.

Both the DPDM-400 and PM-125 High Temperature Silicone Bath Fluids are clear, colorless, and odorless fluids that in the phenyl class of silicones. Their high flash points, high service temperature ranges, low vapor pressure, high resistance to oxidation and high resistance to shear characterize the DPDM-400 & PM-125 High Temperature Bath Fluids.

Although DPDM-400 and PM-125 High Temperature Bath Fluids have pour points of –30ºC and –51ºC, they are not recommended for low temperature applications due to their high VTC (viscosity-to-temperature coefficient). At low temperatures, their viscosities increase significantly making them poor choices for applications below ambient.

DPDM-400 High Temperature Bath Fluid is a Diphenyl-Dimethylsiloxane (CAS# 68083-14-7) with a viscosity of 400cSt. It will remain stable at 250ºC (open system) for 1,500 to 2,000 hours without gelling or breaking down. In closed system baths*, it will remain stable at 300ºC.

PM-125 High Temperature Bath Fluid is a Phenylmethylsiloxane (CAS # 63148-52-7) with a viscosity of 125cSt. It has a long term operating temperature range of 230ºC (open system). At 250ºC (open system), it will remain stable for approximately 1,200 hours without gelling or breaking down. In closed system, PM-125 High Temperature Silicone Bath Fluid will remain stable at 300ºC.

HT-110 High Temperature Silicone Bath Fluid is formulated for high temperature stability >200ºC (open and closed system). It is a polydimethylsiloxane (CAS# 63148-62-9) that is formulated with an iron-siloxane additive. Due to the additive, HT-110 offers significantly higher thermal stability than standard polydimethylsiloxane fluids, which will breakdown at temperature below 200ºC. However, due to the iron-siloxane additive, HT-110 High Temp Silicone Bath Fluid has a brownish color and a mild odor. Because if its murky-brown color, it is not recommended for applications where the instruments need to be visible. HT-110 has been described as a "polydimethylsiloxane on steroids". Essentially, it is a cost-effective fluid that bridges the gap between the polydimethylsiloxane class and the phenyl class of silicones.

Properties

  • High temperature stability @ temperatures of 250C (open system) and 300C (closed system)
  • High flash points
  • DPDM-400 & PM-125 are clear, colorless and odorless
  • Low vapor pressure
  • High resistance to oxidation
  • Low volatility
  • Inert to virtually all bath instrumentation and plastics
  • Environmentally friendly – VOC Exempt
  • Hydrophobic- will not absorb water

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


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


Properties

Property DPDM-400 PM-125 HT-110
Chemical name Diphenyl-Dimethylsiloxane Phenylmethylsiloxane Polydimethylsiloxane w/iron siloxane additive
CAS # 68083-14-7 63148-52-7 63148-62-9
Appearance Clear fluid Clear fluid Brownish fluid
Odorless Yes Yes No...mild odor
Viscosity @ 25C 400cSt 125cSt 100cSt
VTC (viscosity-temp-coefficient) 0.82 0.76 0.60
Flash point 315ºC 315ºC >288ºC

Long-term operating stability

  DPDM-400 PM-125 HT-110
Open system (presence of air) 250ºC 230ºC >200ºC
Closed system (closed to the atmosphere) 300ºC 300ºC >200ºC

Gel Time at Temperature (open system)

Fluid 149ºC 204ºC 250ºC 260ºC 300ºC
PSF-100cSt Approx 1-year 250 to 300 hours 40 to 60 hours 20 to 25 hours <24 hours
DPDM-400 ++ 1-year >5,000 hours 1,500 hours 200 + hours > 100 hours
PM-125 ++ 1-year >5,000 hours 1,000 – 1,500 hours 200 hours > 100 hours

Availability: 1-gallon, 5-gallon & 55-gallon drums

View Products Specs:

DPDM-400 | PM-125 | HT-110

View MSDS:

DPDM-400 | PM-125 | HT-110