IR detection of the methane halides fluid-like state at ambient conditions

Abstract

The paper presents the IR-study of the fluid-like state, generated at ambient conditions, for methane halides (iodomethane, tetrachloromethane, trichloromethane and dichloromethane). It was shown that at vapor compression-extension procedure realized in variable thickness spectral cell (VTOC), the dual phase state exhibiting both gas and liquid properties arises. A reversible transition from a gas-like to a liquid-like shape, independent on the thermodynamic characteristics of the studied methane halides, was revealed.