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

Long-term operating stability

Gel Time at Temperature (open system)