ISO 680 polypropylene glycol fluid designed for high temperature applications.
UCON™ LB-650-X is a high performing lubricant technology from an alcohol-started base stocks featuring oxypropylene groups (m=0) with one terminal hydroxyl group. The UCON™ LB-650-X is water insoluble and has a viscosity of 650 cSt @ 100 °F. UCON™ LB-650-X is particularly well suited for applications requiring high thermal stability without risk of quickly degrading in hot environments.
Physical state: Liquid.
Color: Brown
Odor: Mild
Boiling point (760 mmHg): > 200 °C ( > 392 °F) Calculated.
Flash point: closed cup 233 °C ( 451 °F) ASTM D 93
Vapor Pressure: < 0.01 mmHg at 20 °C (68 °F) ASTM E1719
Relative Vapor Density (air = 1): >1 Calculated.
Relative Density (water = 1): 0.999 at 20 °C (68 °F) / 20 °C Calculated.
Water solubility: < 0.1 % Visual
Viscosity @ 100°F, SUS ASTM D 445: 650
Viscosity Index, ASTM D 2270: 193
Lbs/gallon @ 20°C: 8.32
Specific [email protected] 20/20°C: 0.999
Closed Cup Flash Point ASTM D 93, °C (°F): 233 (453)
Open Cup Flash Point ASTM D 92, °C (°F): 279 (535
Water, wt%: 0.25
Primary Chemistry: Polypropylene glycol monobutyl ether
Higher flash points
Less volatility at elevated temperatures
Less tendency to form oxidative by-products, e.g. aldehydes, organic acids
Less tendency to become acidic during use
Premature Lubricant Oxidation at High Temperatures
High Smoke Generation from Lubricant Breakdown
UCON™ LB-650-X is commonly used as a lubricating fluid for industrial applications that require enhanced stability toward oxidation at high temperatures.
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