2-Phenyl-1-chloro-1-trichloroacetylcyclopropane (3) was obtained from the reaction of styrene with carbene generated by refluxing the mixture of DL-valine and hexachloroacetone in chlorobenzene un-der an atmosphere of nitrogen.

Contents of vinylidene chloride, acetonitrile, carbon tetrachloride and hexachloropropane in the raw hexachloropropane are determined by gas chromatography.

Rapid Determination of Hexachlorobenzene Content in Pyrotechnic Composition by GC-MS;