Symmetrical tetrachloroethane

CHCI2CHCI2 (g). We have estimated the heat of formation of symmetrical tetrachloroethane. 

SYNONYMS acetylene tetrachloride, tetrachloroethane, symmetrical-tetrachloroethane, s-tetrachloroethane. 

Synonyms/Trade Names Acetylene tetrachloride, Symmetrical tetrachloroethane... 

The traditional and the still widely used synthesis of ehloro-cyclophosphazenes consists of the reaction of finely ground ammonium chloride (the source of nitrogen) with phosphorus pentachloride (the source of phosphorus) (see Eq. 3.1). This reaction is carried out in a high boiling chlorinated solvent such as symmetrical tetrachloroethane, CI2CHCHCI2 or chlorobenzene. This reaction is quite complex. Ammonium chloride is not soluble in these solvents, while phosphorus pentachloride is. Thus, the overall reaction is heterogeneous in nature. A complex mixture of cyclic and linear products is formed in this reaction. Individual chlorocyclophosphazenes can be separated fi-om each other by various means. 

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