A Clear Technical Identity
IOTA BJ1000 Phenyl Silicone Oils are described as a clear, colorless, and odorless polydimethylsiloxane with a high proportion of phenyl groups. This physical description is more than a visual detail. It helps establish the fluid’s identity and supports consistent handling, inspection, and quality verification.
The product is intended for use as a heat transfer fluid, pressure transfer fluid, dielectric in capacitors and transformers, and base fluid of heat-resistant lubricants. Its practical temperature range is -35 °C to +200 °C, assuming heat-stressing occurs under chemically pure conditions.
Viscosity, Density, and Refractive Index
The dynamic viscosity at 25 °C is 900–1100 mPa.s, indicating a fluid with meaningful body and flow resistance. The density at 25 °C is approximately 1.09 g/cm³, and the refractive index at 25 °C is approximately 1.5. Together, these values help define the fluid’s physical behavior under standard reference conditions.
For applications such as pressure transfer, lubrication, or heat transfer, these characteristics can influence pumpability, system fill calculations, and overall fluid handling.
Thermal and Volatility Characteristics
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. These properties are relevant for applications where heat absorption, heat transfer, or temperature management plays a role.
Volatility is less than 1.0% under 5 g/4 h/250 °C conditions. This is an important parameter for high-temperature applications because it indicates how the fluid may behave when exposed to significant thermal stress.
Expansion Behavior Across a Wide Temperature Range
The coefficient of thermal expansion between 0 °C and 180 °C is 85–82 x 10⁻⁵ mLmL⁻¹K⁻¹. This value can be useful when designing closed or open systems where temperature changes may cause fluid expansion or contraction. Understanding expansion behavior helps support safer system design and more accurate operational planning.
Electrical and Safety-Related Properties
The dielectric constant at 25 °C and 100 Hz is approximately 2.9, and the dielectric strength is approximately 20 kVmm⁻¹. The flash point is approximately 280 °C, and the ignition temperature is greater than 400 °C. These values help complete the technical profile of IOTA BJ1000, especially for electrical and high-temperature applications.
Storage and Verification
The “Best use before end” date on the product label provides a practical storage reference. If the product is used beyond this date, the required properties should be checked to confirm suitability for the intended application.
IOTA BJ1000 Phenyl Silicone Oils-IOTA
