Analytes - 1,1,1,2-tetrachloroethane
1,1,1,2-tetrachloroethane: CAS No. 630-20-6; C2H2Cl4; molecular weight 167.85; boiling point 130.5°C; density 1.54gm/mL, vapor pressure 14mm Hg at 25°C; flash point none, essentially nonflammable; slightly water soluble is a colorless to yellowish red liquid previously used to produce trichloroethylene, tetrachloroethylene, and dichloroethylene and as a metal cleaning and degreasing solvent, but due to its toxicity and widespread presence as an environmental contaminant, all large-scale commercial production of this chemical in the U.S. has ended. It is most frequently measured in water, air, oil and soil to comply with environmental regulations. Due to its volatility, it is most often measured using GC/ECD, ELCD and GC/MS methods specified by regulatory agencies like the U.S. EPA.