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battery lead
peddler
Member Posts: 881 ✭✭✭✭
Someone one here said battery lead is toxie to use to cast soft bullets. I have used it before but not very much, and did not have any noticiable effects on my health. Does anyone have an opinion about using old battery lead? Thanks
Comments
Maintenance free/low maintenance batteries use calcium metal-doped lead to catalyze the hydrogen gas generated from water electrolysis back into water. That is what makes the batteries low maintenance or maintenance free, you don't need to add water to the cells as often like in the old days. When the battery lead is melted down there is enough sulfuric acid from residual electrolyte trapped in the lead dioxide and lead framework of the battery plates to react with the small amount of calcium metal in the lead alloy.
Normally when sulfuric acid (or water) gets in contact with calcium metal it undergoes a rather vigorous reaction that generates hydrogen gas. In and of itself this is no big deal, hydrogen is a simple non-toxic asphyxiant that is also flammable. But the lead alloy used in batteries also contains a bit of antimony and even arsenic to help harden and strengthen the lead to withstand the vibration and general knocking-about batteries have to withstand in order to survive normal automotive use.
When hydrogen comes in contact with arsenic and antimony, or compounds of these two elements, the hydrogen reacts to form ammonia analogues called arsine and stibine, AsH3 and SbH3. Both of these are heavy gases and both have the similar characteristic odors of rotting fish. In World War One the Germans experimented with these, along with phosphine, another rotting-fish-smelling gaseous ammonia analogue with formula PH3, as war gases. As such they were highly effective since they are deadly in amounts too small to easily detect.
In even smaller amounts that are too small to immediately kill they cause rather painful lung damage that often eventually leads to emphysema and lung cancer.
That was not considering any toxic effects of phosgene gas and other wonderful toxicants.
My son , his wife and two young daughters tested positive for high lead levels from living in a very large house that was being renovated. Rooms under rehabilitation were closed off. Air was exhausted and masks were used.
Handling lead in any form has been given new meaning to us all.
It's not worth it to not take full precautions.
Handling lots of fired brass needs to be given some thought as regards combustion products from lead azide primers.
1. Don't do this on the kitchen range
2. DO have ventilation-at the lip of the pot on the side away from you
3. Don't eat smoke or drink while casting or handling lead
4. Go wash your hands. The greatest hazard with lead is not inhalation, but ingestion- from eating it. Lead does not go thru intact skin (unless moving at high speed)
I was surprised to find that MidwayUSA sells lead bars using that same mixture of 4% Tin, 12% Antimony and 84% Lead.