- May 27, 2012
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My understanding is, if the container is sealed, the chlorine has no place to go. an open container will dissipate, but a closed system will retain it. For example, I chlorinate my water when storing it, but even a year plus later don't re-chlorinate it before drinking.
x2 Chlorine will generally evaporate out in 24 hours in an open system. In a closed system, it should stay put.