Low-Temperature Freezing Point
Ethyl silicone oil exhibits excellent low-temperature performance and an extremely low freezing point, demonstrating excellent cold resistance:

Freezing Point: Ethyl silicone oil has a freezing point below -70°C (remains liquid below -70°C)
Operating Temperature Range: Stable operation over a wide temperature range of -60°C to 150°C
Temperature Viscosity Coefficient: Extremely low temperature viscosity coefficient, resulting in minimal viscosity change with temperature

Low-Temperature Resistance: Maintains excellent lubricity and dielectric properties even at extremely low temperatures
Ethyl silicone oil also exhibits excellent stability in high-temperature environments:
Maximum Operating Temperature: Long-term operating temperature up to 150°C

Thermal Stability: Maintains relatively stable performance in high-temperature environments, with no significant decomposition or deterioration

Oxidation Resistance: Excellent antioxidant properties
Short-Term Heat Resistance: Can withstand higher temperatures for short periods (specific data is unavailable, but related silicone oil products can reach temperatures exceeding 200°C).

Relationship between Chemical Structure and Heat Resistance
Ethyl silicone oil's unique chemical structure is the basis for its excellent heat resistance:
Molecular Structure: Polydiethylsiloxane structure, with the siloxane backbone providing basic heat resistance.
Ethyl Group Function: The ethyl substituent imparts excellent high-temperature resistance.

Structural Characteristics:
Small viscosity change with temperature
Low freezing point
High-temperature resistance
Strong oxidation resistance.
Overall Performance: Combines heat resistance, electrical insulation, weather resistance, and hydrophobicity.

Due to its heat resistance, ethyl silicone oil is particularly suitable for:
Lubricants requiring wide temperature range
Precision instrumentation oils
Specialty lubricants
High-temperature sealing materials
Electrical insulation materials

Its excellent high and low-temperature resistance makes it widely applicable in industrial, electronics, aerospace, and other fields.