TKS 406B de-ice Fluid - 55 Gallon Drum Clariant biodegradable de-icing chemical fluid is pumped through porous metal structures that form the leading edge of the wing on an airplane. The liquid fluid is clear in color and has a vapor pressure of 9.33 hectopascals at 0 degrees C and comes in a 55-gallon drum. It has a boiling temperature rating of 100 degrees C at 760 millimeters Hg, flash point of 54 degrees C and a viscosity of 11 to 13 square meters per second. Features: Vapor density of 2 and a relative density of 1.092 to 1.097 Auto-ignition temperature rating of 365 degrees C Benefits: Removes frozen deposits of snow, ice and frost from stationery aircraft on the ground Designed to protect aircraft from in-flight icing formed on propellers, windscreens and tail surfaces Specifications: AL-5 (to DTD 406B) NATO Code S-745