Chlorine bleach has been used as a general germicide for many years. In fact, some state health departments still recommend it as a sanitizer and disinfectant. Chlorine bleach is also much cheaper per gallon than hospital-grade disinfectant cleaners. With all this going for it, why doesn’t everyone use it?
Here are some facts you should consider before adding bleach to your arsenal of maintenance products:
Chlorine is a strong oxidizing agent. In recent tests, chlorine bleach was exposed to samples of commercial-grade copper, cold rolled steel, and alu-minum. The copper samples dis-colored in three hours and showed green corrosion in 24 hours. Aluminum showed signs of corrosion within 24 hours, and on the surface of cold rolled steel rust formed within 30 minutes.
Some grades of stainless steel also can be damaged from the use of products containing chlorine. A process known as “hydrogen embrittlement” may occur as the chlorine bleach attacks the stainless steel,trapping hydrogen gas in the pores of the metal. Over time, the hydrogen can be released, resulting in weakened metal. It is especially damaging to welded joints.