Patent ID: 6881872

Claim:
A process for producing trans-1,3-dichloropropene of having a Hazen color number (APHA) of at most 200, which comprises distilling the following composition (II) obtainable from the following composition (I), to remove a component containing chlorinated or brominated C 6 compounds (compounds X), as a high boiling component, and to obtain trans-1,3-dichloropropene having said APHA as a low boiling component: Composition (I): A composition comprising cis-1,3-dichloropropene, trans-1,3-dichloropropene and C 6 compounds; Composition (II): A composition which is the following composition (IIA) and/or the following composition (IIB); Composition (IIA): A composition which is obtainable by distilling the composition (I) to remove a low boiling component containing cis-1,3-dichloropropene and then reacting chlorine or bromine to the residual high boiling component, and which comprises trans-1,3-dichloropropene and chlorinated or brominated C 6 compounds (compounds X); Composition (IIB): A composition which is obtainable by reacting chlorine or bromine to the composition (I), followed by distillation to remove a low boiling component containing cis-1,3-dichloropropene, and which comprises trans-1,3-dichloropropene and chlorinated or brominated C 6 compounds (compounds X).