Dead CMOS Battery - NEC Powermate portable

From: Joe <rigdonj_at_cfl.rr.com>
Date: Mon Feb 11 08:44:33 2002

At 11:04 PM 2/10/02 +0000, you wrote:
>> Some (mostly non-consumer type) Lithium batteries use sulfur dioxide in
>> them. Not the kind of thing that you want to rupture inside your PC (or in
>
>But presumably in solution, not as a gas...
>
>> your house!). For the ones of you that aren't familar with the stuff,
>> sulfur dioxide is nuseating and toxic, and it also reacts with moisture to
>> form sulfuric acid, INCLUDING the moisture inside your lungs!
>
>No it doesn't. It forms sulphurous acid (H2SO3), which is a much weaker
>acid than sulphuric (which is what you get if you disolve sulphur
>trioxide in water).

  I wa swaiting for his. You're right. but SO2 can react with O2 and
moisture in the air to form H2SO4. In fact, that's how sulfuric acid is (or
was) prodused commercailly. I certain proportion of H2SO3 is also produced
I'm told that it's only a small amount and it's some how removed and
retreated to form H2SO4.

>
>I an not suggesting that SO2 is particularly pleasant, but I am sure most
>of us here have burnt sulphur as part of a school chemistry experiment
>and lived to tell the tale.

   Yes, but that's a lot less S02 than the amount in the batteries. I'm not
suggesting that everyone of the room is going to die but if one of the
batteries ruptures, it will certainly empty the room in a hurry!

   Joe
Received on Mon Feb 11 2002 - 08:44:33 GMT