Sublimation Pressure and Heat Capacity of Dimethylsilanediol

Abstract

Dimethylsilanediol (DMSD, CAS RN: 1066-42-8) is used as an intermediate in the synthesis of organosilicon compounds and is also an intermediate degradation product of these compounds in the environment. As volatility is a key property for assessing the fate of chemicals in the environment, the sublimation pressure of DMSD was determined using the static method over a temperature range of 248 to 308 K. In addition, the heat capacity of crystalline DMSD was measured over a temperature range of 269 to 293 K. To the best of our knowledge, this is the first experimental determination of the sublimation pressure and heat capacity of crystalline DMSD.