high purity, consistent supply, competitive price sulfolaneTetramethylene sulfone, oil gas chemical Physical chemical properties. Physical State: Liquid Appearance: clear, colorless Odor: odorless pH: Not available. Vapor Pressure: 14.5 mmHg @ 150 Vapor Density: Not available. Evaporation Rate:Not available. Viscosity: 10.34 cP 30C Boiling Point: 282-288C Freezing/Melting Point:27.4 deg C ...