Airborne molecules in indoor air or cleanroom air have been recognized as the important problems. In this study, the emission characteristics of volatile organic compounds from PVC floorings were evaluated by the small environmental chamber on the condition of different temperatures. From a point of view that the emission flux |gm^<-2>h^<-1>| is controlled by the desorption on the building material surface and the internal diffusion within the building material, the relationship between these two mechanisms and the temperature was described as the outgassing properties. The initial emission rate and the decreasing rate constant can be considered for predicting the emission profile.
