1,1-Dichloroethane is a chlorinated hydrocarbon. It is a colorless oily liquid with a chloroform-like odor. It is not easily soluble in water, but miscible with most organic solvents.
1,1-Dichloroethane (1,1-DCA) is called a volatile chemical, as opposed to a non-volatile or semi-volatile chemical, based on its physical properties and the method used to measure its concentration in water. 1,1-DCA can be detected by a variety of instruments including mass spectrometry or electron capture. No matter what detection instrument is used, the first step of most analyses is to separate 1,1-DCA from the water and non-volatile chemicals in the water. This is accomplished by purging the volatile chemicals from the water with an inert gas and trapping the volatile chemicals on a solid absorbant (Cleserietal., 1989). While there is theoretically no variability in physical and chemical properties, there is error in the estimation of those constants. Different values appear in the literature for these properties. MacKay et al. (1993) has surveyed the literature for physical/chemical properties of a variety of chemicals and published those values along with the literature.
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