Homebrew PCBs

In a message dated 5/22/2009 11:53:55 P.M. Central Daylight Time,  
stefan_trethan@... writes:

The  phosphorus was in some kind of oil, not water, water would ignite  it.


Stefan:  You are confusing with POTASSIUM, I think.  Phosphorus  is 
NON-metallic, kinda a translucent white/yellowish solid about like frozen  butter 
in consistency at room-temperature, best I can recall.  It will  ignite in 
air at very low ambient temperature.  Potassium or Sodium will  "corrode" so 
fast when in contact with water than HEAT is generated, sufficient  to ignite 
the Hydrogen that is given off by the Na (or K)+H²O  reaction.   
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