Originally Posted by
unknownk
MSDS sheets are designed to make common chemical sound worse then nerve gas
If you do a little reading, you will probably realize, in this case at least, that the MSDS doesn't express exactly just how dangerous what I am talking about and attempting to express, is.
Miners used to call the gases that evolve from this type of dissolution of metals "the red death", what we call NOx today. Metals were dissolved during the assay process and would float down to a miners tent who was often times sleeping. After breathing in the gas they just wouldn't wake up. Many miners died this way.
In this case the MSDS is dead right, there is no exaggeration. In the future, on these types of posts, you might want to think about what you are posting before you discount the MSDS or the seriousness of what a person is talking about. Attempting to make something seem less dangerous than it actually is may lead someone in the wrong direction, and cause themselves or someone else serious harm.
As far as waste is concerned, if you understand how to deal with it there is never any waste. So long as there is metal that is recoverable in solution that has value, the solution is not considered waste by the EPA. Using the reactivity series, you can cement each type of metal out of solution and then finally precipitate the last metals with sodium hydroxide and end up with what is essentially salt water, which is not considered waste material. But in order to understand what I just said, and how to do it, you would also have to understand enough about chemistry and have enough experience to be able to reduce solutions from acidic with metals, to just salt water.
Scott
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