A Fluid Designed for Thermal Consistency

Heat transfer systems depend on more than just temperature resistance. They require a fluid that can help maintain stable performance, resist excessive volatility, and remain compatible with the operating environment. IOTA BJ1000 Phenyl Silicone Oils are presented as a clear, colorless, and odorless polydimethylsiloxane with a high proportion of phenyl groups, offering a practical temperature range between -35 °C and +200 °C under chemically pure heat-stressing conditions. This makes the fluid especially relevant for systems where temperature control, fluid stability, and operational safety are closely linked.

Applications That Depend on Stable Fluid Behavior

IOTA BJ1000 is suitable for use as a heat transfer fluid, pressure transfer fluid, dielectric in capacitors and transformers, and base fluid of heat-resistant lubricants. In heat transfer applications, the fluid’s thermal conductivity, specific heat, and viscosity all play a role in how effectively heat can be managed within a system. Its use as a pressure transfer fluid also highlights the importance of consistent fluid behavior. Pressure-related applications often require materials that do not change unpredictably under operating conditions. The same stability that supports heat transfer can also support pressure transfer performance.

Product Data That Supports System Design

The typical product data provides useful reference values for technical evaluation. The dynamic viscosity at 25 °C is 900–1100 mPa.s, while the density at 25 °C is approximately 1.09 g/cm³. The refractive index at 25 °C is approximately 1.5, and volatility is less than 1.0% under 5 g/4 h/250 °C conditions. For thermal performance, the thermal conductivity at 50 °C is approximately 0.14 Wm⁻¹K⁻¹, and the specific heat at 25 °C is approximately 1.46 Jg⁻¹K⁻¹. The coefficient of thermal expansion between 0 °C and 180 °C is reported as 85–82 x 10⁻⁵ mLmL⁻¹K⁻¹, which can be relevant when designing systems that experience temperature variation.

Electrical Performance for Capacitors and Transformers

IOTA BJ1000 is also suitable as a dielectric in capacitors and transformers. Its dielectric constant at 25 °C and 100 Hz is approximately 2.9, and its dielectric strength is approximately 20 kVmm⁻¹. These values are useful for evaluating the fluid’s electrical insulation characteristics in relevant applications. The flash point is approximately 280 °C, and the ignition temperature is greater than 400 °C. Because heat-stressing may affect the flash point, open systems should include regular flash point checks, at least once per year or more frequently when operating conditions require it.

Practical Guidance for Long-Term Use

To maintain performance, IOTA BJ1000 should be stored according to the label’s “Best use before end” date. If the product is stored beyond this date, the relevant properties should be verified before use. This ensures that the fluid continues to meet the requirements of the intended application.

IOTA BJ1000 Phenyl Silicone Oils-IOTA