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Treat Chlorine Gas Exposure: Mixing Bleach and Ammonia

By Rod Brouhard, About.com

Updated October 22, 2006

About.com Health's Disease and Condition content is reviewed by our Medical Review Board

In case your mom didn't tell you, mixing bleach and ammonia can kill you. The nitty-gritty details of the chemical reaction aren't important, but the end result is a release of chlorine gas. Chlorine gas is so dangerous, it was used as a chemical warfare agent in World War I.

If you discover someone exposed to chlorine gas, follow these steps to stay safe and get the help needed.

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Time Required: Until the ambulance arrives.

Here's How:

  1. STAY SAFE! Regardless of anything else that happens, if you smell a strong odor of chlorine (bleach) then you need to move out of the area to fresh air. It only takes a few moments for chlorine gas to overwhelm you. Obviously, if you become unconscious, you will not be able to summon help for yourself or anyone else.

  2. Call 911. Get help on the way. The faster an ambulance arrives the less damage will be done to the patient. During any call to 911, do not hang up until instructed to do so.

  3. If the 911 call center doesn't patch you through to poison control, call 1-800-222-1222 after you are finished with 911.

  4. Most likely, the person you find will be unconscious. If you are able, move the victim to a well-ventilated area away from the chlorine smell. The best bet is to move outside.

  5. If you are unable to move the victim or the smell is too strong, ventilate the room as much as possible.

  6. Monitor the victim and follow the basic steps for first aid. Follow universal precautions and wear personal protective equipment if you have it. Most importantly, make sure you're in a well ventilated area. The victim can be covered in chemicals giving off the chlorine gas.

  7. When help arrives, tell them what happened and step back. Staying out of the way of rescuers is as much help to the victim as everything you do before the ambulance arrives.

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