Process for producing c3 chlorinated alkane and alkene compounds

A process comprising:

• preparing a reaction mixture comprising a plurality of C3 chlorinated alkane isomers comprising chlorinating a C3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C3 chlorinated alkane isomers, the plurality of C3 chlorinated alkane isomers each having at least one more chlorine atom than the C3 chlorinated alkane starting material, wherein the concentration of the C3 chlorinated alkane starting material is controlled such that conversion of the C3 chlorinated alkane starting material to the plurality of C3 chlorinated alkane isomers, represented by the molar ratio of the C3 chlorinated alkane starting material:C3 chlorinated alkane isomers present in the chlorination zone does not exceed about 40:60,
• subjecting the reaction mixture to one or more first distillation steps to produce a plurality of C3 chlorinated alkane isomer stream, one or more single C3 chlorinated alkane isomer streams and optionally a C3 chlorinated alkane starting material stream,
• subjecting the plurality of C3 chlorinated alkane isomers stream to a selective dehydrochlorination step in which one of the C3 chlorinated alkane isomers, the first C3 chlorinated alkane isomer, is converted to a respective first C3 chlorinated alkene without the substantial dehydrochlorination of any of the other of the plurality of C3 chlorinated alkane isomers, and
• obtaining a stream rich in or consisting of the first C3 chlorinated alkene from the mixture prepared in the dehydrochlorination step.