Critical Temperature For Clausius Model is the highest temperature at which the substance can exist as a liquid. At this phase boundaries vanish, the substance can exist both as a liquid and vapor. And is denoted by T'c. Critical Temperature For Clausius Model is usually measured using the Kelvin for Temperature. Note that the value of Critical Temperature For Clausius Model is always positive. Typically, the value of Critical Temperature For Clausius Model is greater than 0.