IOTA BJ550 Polyphenylmethyldimethylsiloxane
FEATURES
1. Low volatility
2. Serviceable temperature range of -40°C up to 230°C in open systems, and up to 315°C in closed systems
3. Low viscosity of 125mm²/sec at 25°C
4. High flash point
5. Excellent heat transfer characteristics
6. Flat viscosity temperature curve
7. Good compressibility
8. Good oxidation and gumming resistance
APPLICATIONS
As a lubricant:
• Base oil for high temperature ball bearing greases.
• Lubricating oil for high temperature instruments.
• Impregnating oil for sintered bronze bearings in small electric motors and mechanisms exposed to high ambient temperatures.
As a heat transfer medium:
• Heat-treating baths for speciality metals.
• Heat exchange fluid for research apparatus and instrument calibration baths.
• Heat transfer oil in capacitors, transformers and various electronics.
As a thermostat fluid:
• Suitable for temperatures from -40°C to 315°C in thermostat systems, which should be kept clean.
TYPICAL PROPERTIES
Parameter unit value
Color Colorless
Specific gravity at 25°C/15.6°C 1.068
Viscosity at 25°C mm2/s 125
Surface tension at 25°C mN/m 25
Flash point - open cup °C 300
Freeze point °C - 50
Refractive index at 25°C 1.49-1.50
Viscosity stability² <5%
USABLE LIFE AND STORAGE
When stored at or below 60°C in the original unopened containers, this product has a usable life of 60 months from the date of production.
LIMITATIONS
This product is neither tested nor represented as suitable for medical or pharmaceutical uses