Why the color of dichloropropane changed?

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Prem Baboo

Dichloropropenes is a colorless liquids. Dichloropropene is likely to colour disappear rapidly in water because of its relatively low water solubility and high volatility; half-lives of less than 10 min . when it is distillate the colour change into brown due to concentration changed. The physical properties of a cis/trans mixture depend on the ratio of the isomers.