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www.quora.com/How-long-does-it-take-chlorine-to-off-gas...

If a municipality uses free chlorine for chlorination, that chlorine should off gas relatively quickly. For example, pouring a pitcher of water in the evening and leaving it out until morning might well allow for the chlorine to dissipate.

www.troublefreepool.com/threads/how-quick-does-chlorine...

During this time I've had my chlorinator running about 3 hrs per day at 100%. My pool water is covered with a solar cover and the pool temp is about 78 degrees. Would the chlorine have gone down if my chlorinator hadn't been working? How long does it take for the chlorine to dissipate if no new chlorine is going in??

hightimes.com/grow/grow-hack-how-to-remove-chlorine-from...

It’s no longer enough to leave your tap water out for day to let the chlorine evaporate, because water […] Grow Hack: How to Remove Chlorine From Tap Water • High Times

skeptics.stackexchange.com/questions/16842/will-fluoride...

Chlorine does evaporate, so if exposed to air (e.g. in a bucket) in warm water (especially under UV light or sunlight) it will probably mostly dissipate overnight. Both fluoride and chloramine will not similarly dissipate, if you want them removed you need to filter them out (e.g. with activated carbon) or distill the water. See:

answers.yahoo.com/question/index?qid=20070701162651AA52JB1

Chlorine will evaporate from tap water once the water has been sitting out for 24 hours. However, there are still substances in the water like trace metals and chloramines that will not be removed from the water no matter how long you let it sit out.

www.fluther.com/144037/how-long-does-it-take-chlorine-to...

Pretty much, yes. It depends on how much water and how much chlorine to determine the time frame. I have a hot tub that I treat minimally because right now tree frogs are breeding and they get under the cover to make froggy love in my spa. haha I only use about 1/6th of a cup per 400 gallons and at this rate it will dissipate weekly.

www.reddit.com/r/answers/comments/1hejqc

Does chlorine actually "evaporate" out of tap water? (self.answers) submitted 5 years ago by gregmuldunna. It is commonly said that before you use tap water for plants, you must leave the tap water out in a glass to let the chlorine "evaporate." ... Chlorine used in tap water is non-volatile, so letting it sit out will only evaporate water. The ...

www.aquariacentral.com/forums/threads/how-long-does-it...

I was thinking to just fill it with hose water and let the chloramine dissipate out. If it takes a few weeks that's fine, I just need to know how long it will take. I've seen "weeks" as the answer a few places but otherwise no mention. It has to dissipate eventually and usually the rate has a constant halflife.

www.shroomery.org/forums/showflat.php/Number/12697713

Did i made a toxic chlorine gas from doing this? The bottle Says I shouldn't mix them. Luckily it was in my bathroom so i turned the fan on and closed the door. I live in small apartment my living room is two doors away from my bathroom I opened some windows and my balcony door. Should I be concerned? How long should I was for the gas to dissipate?

www.atsdr.cdc.gov/toxprofiles/tp172-c6.pdf

CHLORINE 159 6. POTENTIAL FOR HUMAN EXPOSURE . 6.1 . OVERVIEW . Although it has multiple uses and is released to the environment, chlorine is too reactive to be identified in any of the 1,704 hazardous waste sites that have been proposed for inclusion on the EPA National Priorities List (NPL) (HazDat 2007).