Physical Properties of Sulphur by keypoint It is a yellow solid. It is a bad conductor of heat and electricity It has a melting point of 119°c and a boiling point of 444°c. It is insoluble in water but soluble in methylbenzene (toluene). Others are Viewing: Chemical Properties of Sulphur Physical Properties of Hydrogen Physical Properties Of NO Physical Properties Of NO2 Physical Properties of H2S Physical Properties of SO2 Physical Properties Of H2SO4