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Phosgene gas exposure can be very deadly without you even knowing until it is too late. The most common way of being exposed to phosgene is brazing where refrigerant is present. Freon is a hcfc which when in contact with extreme heat puts off the phosgene gas. This gas can kill you rapidly if exposed to 50ppm especially if it was inhaled. You may experience tighting of the chest and your throat feeling like it is burning. See a physcian if exposure is thought to have happened. If you have a leak in a refrigerant line reclaim all refrigerant before fixing leak or you might face DEATH.

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Q: Phosgene gas exposure from working with freon.?
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